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  • best alternative to in-definition initialization of static class members? (for SVN keywords)

    - by Jeff
    I'm storing expanded SVN keyword literals for .cpp files in 'static char const *const' class members and want to store the .h descriptions as similarly as possible. In short, I need to guarantee single instantiation of a static member (presumably in a .cpp file) to an auto-generated non-integer literal living in a potentially shared .h file. Unfortunately the language makes no attempt to resolve multiple instantiations resulting from assignments made outside class definitions and explicitly forbids non-integer inits inside class definitions. My best attempt (using static-wrapping internal classes) is not too dirty, but I'd really like to do better. Does anyone have a way to template the wrapper below or have an altogether superior approach? // Foo.h: class with .h/.cpp SVN info stored and logged statically class Foo { static Logger const verLog; struct hInfoWrap; public: static hInfoWrap const hInfo; static char const *const cInfo; }; // Would like to eliminate this per-class boilerplate. struct Foo::hInfoWrap { hInfoWrapper() : text("$Id$") { } char const *const text; }; ... // Foo.cpp: static inits called here Foo::hInfoWrap const Foo::hInfo; char const *const Foo::cInfo = "$Id$"; Logger const Foo::verLog(Foo::cInfo, Foo::hInfo.text); ... // Helper.h: output on construction, with no subsequent activity or stored fields class Logger { Logger(char const *info1, char const *info2) { cout << info0 << endl << info1 << endl; } }; Is there a way to get around the static linkage address issue for templating the hInfoWrap class on string literals? Extern char pointers assigned outside class definitions are linguistically valid but fail in essentially the same manner as direct member initializations. I get why the language shirks the whole resolution issue, but it'd be very convenient if an inverted extern member qualifier were provided, where the definition code was visible in class definitions to any caller but only actually invoked at the point of a single special declaration elsewhere. Anyway, I digress. What's the best solution for the language we've got, template or otherwise? Thanks!

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  • Powershell script to change screen Orientation

    - by user161964
    I wrote a script to change Primary screen orientation to portrait. my screen is 1920X1200 It runs and no error reported. But the screen does not rotated as i expected. The code was modified from Set-ScreenResolution (Andy Schneider) Does anybody can help me take a look? some reference site: 1.set-screenresolution http://gallery.technet.microsoft.com/ScriptCenter/2a631d72-206d-4036-a3f2-2e150f297515/ 2.C code for change oridentation (MSDN) Changing Screen Orientation Programmatically http://msdn.microsoft.com/en-us/library/ms812499.aspx my code as below: Function Set-ScreenOrientation { $pinvokeCode = @" using System; using System.Runtime.InteropServices; namespace Resolution { [StructLayout(LayoutKind.Sequential)] public struct DEVMODE1 { [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string dmDeviceName; public short dmSpecVersion; public short dmDriverVersion; public short dmSize; public short dmDriverExtra; public int dmFields; public short dmOrientation; public short dmPaperSize; public short dmPaperLength; public short dmPaperWidth; public short dmScale; public short dmCopies; public short dmDefaultSource; public short dmPrintQuality; public short dmColor; public short dmDuplex; public short dmYResolution; public short dmTTOption; public short dmCollate; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string dmFormName; [MarshalAs(UnmanagedType.U4)] public short dmDisplayOrientation public short dmLogPixels; public short dmBitsPerPel; public int dmPelsWidth; public int dmPelsHeight; public int dmDisplayFlags; public int dmDisplayFrequency; public int dmICMMethod; public int dmICMIntent; public int dmMediaType; public int dmDitherType; public int dmReserved1; public int dmReserved2; public int dmPanningWidth; public int dmPanningHeight; }; class User_32 { [DllImport("user32.dll")] public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE1 devMode); [DllImport("user32.dll")] public static extern int ChangeDisplaySettings(ref DEVMODE1 devMode, int flags); public const int ENUM_CURRENT_SETTINGS = -1; public const int CDS_UPDATEREGISTRY = 0x01; public const int CDS_TEST = 0x02; public const int DISP_CHANGE_SUCCESSFUL = 0; public const int DISP_CHANGE_RESTART = 1; public const int DISP_CHANGE_FAILED = -1; } public class PrmaryScreenOrientation { static public string ChangeOrientation() { DEVMODE1 dm = GetDevMode1(); if (0 != User_32.EnumDisplaySettings(null, User_32.ENUM_CURRENT_SETTINGS, ref dm)) { dm.dmDisplayOrientation = DMDO_90 dm.dmPelsWidth = 1200; dm.dmPelsHeight = 1920; int iRet = User_32.ChangeDisplaySettings(ref dm, User_32.CDS_TEST); if (iRet == User_32.DISP_CHANGE_FAILED) { return "Unable To Process Your Request. Sorry For This Inconvenience."; } else { iRet = User_32.ChangeDisplaySettings(ref dm, User_32.CDS_UPDATEREGISTRY); switch (iRet) { case User_32.DISP_CHANGE_SUCCESSFUL: { return "Success"; } case User_32.DISP_CHANGE_RESTART: { return "You Need To Reboot For The Change To Happen.\n If You Feel Any Problem After Rebooting Your Machine\nThen Try To Change Resolution In Safe Mode."; } default: { return "Failed"; } } } } else { return "Failed To Change."; } } private static DEVMODE1 GetDevMode1() { DEVMODE1 dm = new DEVMODE1(); dm.dmDeviceName = new String(new char[32]); dm.dmFormName = new String(new char[32]); dm.dmSize = (short)Marshal.SizeOf(dm); return dm; } } } "@ Add-Type $pinvokeCode -ErrorAction SilentlyContinue [Resolution.PrmaryScreenOrientation]::ChangeOrientation() }

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  • WinRT WebView and Cookies

    - by javarg
    Turns out that WebView Control in WinRT is much more limited than it’s counterpart in WPF/Silverlight. There are some great articles out there in how to extend the control in order for it to support navigation events and some other features. For a personal project I'm working on, I needed to grab cookies a Web Site generated for the user. Basically, after a user authenticated to a Web Site I needed to get the authentication cookies and generate some extra requests on her behalf. In order to do so, I’ve found this great article about a similar case using SharePoint and Azure ACS. The secret is to use a p/invoke to native InternetGetCookieEx to get cookies for the current URL displayed in the WebView control.   void WebView_LoadCompleted(object sender, NavigationEventArgs e) { var urlPattern = "http://someserver.com/somefolder"; if (e.Uri.ToString().StartsWith(urlPattern)) { var cookies = InternetGetCookieEx(e.Uri.ToString()); // Do something with the cookies } } static string InternetGetCookieEx(string url) { uint sizeInBytes = 0; // Gets capacity length first InternetGetCookieEx(url, null, null, ref sizeInBytes, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero); uint bufferCapacityInChars = (uint)Encoding.Unicode.GetMaxCharCount((int)sizeInBytes); // Now get cookie data var cookieData = new StringBuilder((int)bufferCapacityInChars); InternetGetCookieEx(url, null, cookieData, ref bufferCapacityInChars, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero); return cookieData.ToString(); }   Function import using p/invoke follows: const int INTERNET_COOKIE_HTTPONLY = 0x00002000; [DllImport("wininet.dll", CharSet = CharSet.Unicode, SetLastError = true)] static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData, ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved); Enjoy!

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  • Solaris X86 64-bit Assembly Programming

    - by danx
    Solaris X86 64-bit Assembly Programming This is a simple example on writing, compiling, and debugging Solaris 64-bit x86 assembly language with a C program. This is also referred to as "AMD64" assembly. The term "AMD64" is used in an inclusive sense to refer to all X86 64-bit processors, whether AMD Opteron family or Intel 64 processor family. Both run Solaris x86. I'm keeping this example simple mainly to illustrate how everything comes together—compiler, assembler, linker, and debugger when using assembly language. The example I'm using here is a C program that calls an assembly language program passing a C string. The assembly language program takes the C string and calls printf() with it to print the string. AMD64 Register Usage But first let's review the use of AMD64 registers. AMD64 has several 64-bit registers, some special purpose (such as the stack pointer) and others general purpose. By convention, Solaris follows the AMD64 ABI in register usage, which is the same used by Linux, but different from Microsoft Windows in usage (such as which registers are used to pass parameters). This blog will only discuss conventions for Linux and Solaris. The following chart shows how AMD64 registers are used. The first six parameters to a function are passed through registers. If there's more than six parameters, parameter 7 and above are pushed on the stack before calling the function. The stack is also used to save temporary "stack" variables for use by a function. 64-bit Register Usage %rip Instruction Pointer points to the current instruction %rsp Stack Pointer %rbp Frame Pointer (saved stack pointer pointing to parameters on stack) %rdi Function Parameter 1 %rsi Function Parameter 2 %rdx Function Parameter 3 %rcx Function Parameter 4 %r8 Function Parameter 5 %r9 Function Parameter 6 %rax Function return value %r10, %r11 Temporary registers (need not be saved before used) %rbx, %r12, %r13, %r14, %r15 Temporary registers, but must be saved before use and restored before returning from the current function (usually with the push and pop instructions). 32-, 16-, and 8-bit registers To access the lower 32-, 16-, or 8-bits of a 64-bit register use the following: 64-bit register Least significant 32-bits Least significant 16-bits Least significant 8-bits %rax%eax%ax%al %rbx%ebx%bx%bl %rcx%ecx%cx%cl %rdx%edx%dx%dl %rsi%esi%si%sil %rdi%edi%di%axl %rbp%ebp%bp%bp %rsp%esp%sp%spl %r9%r9d%r9w%r9b %r10%r10d%r10w%r10b %r11%r11d%r11w%r11b %r12%r12d%r12w%r12b %r13%r13d%r13w%r13b %r14%r14d%r14w%r14b %r15%r15d%r15w%r15b %r16%r16d%r16w%r16b There's other registers present, such as the 64-bit %mm registers, 128-bit %xmm registers, 256-bit %ymm registers, and 512-bit %zmm registers. Except for %mm registers, these registers may not present on older AMD64 processors. Assembly Source The following is the source for a C program, helloas1.c, that calls an assembly function, hello_asm(). $ cat helloas1.c extern void hello_asm(char *s); int main(void) { hello_asm("Hello, World!"); } The assembly function called above, hello_asm(), is defined below. $ cat helloas2.s /* * helloas2.s * To build: * cc -m64 -o helloas2-cpp.s -D_ASM -E helloas2.s * cc -m64 -c -o helloas2.o helloas2-cpp.s */ #if defined(lint) || defined(__lint) /* ARGSUSED */ void hello_asm(char *s) { } #else /* lint */ #include <sys/asm_linkage.h> .extern printf ENTRY_NP(hello_asm) // Setup printf parameters on stack mov %rdi, %rsi // P2 (%rsi) is string variable lea .printf_string, %rdi // P1 (%rdi) is printf format string call printf ret SET_SIZE(hello_asm) // Read-only data .text .align 16 .type .printf_string, @object .printf_string: .ascii "The string is: %s.\n\0" #endif /* lint || __lint */ In the assembly source above, the C skeleton code under "#if defined(lint)" is optionally used for lint to check the interfaces with your C program--very useful to catch nasty interface bugs. The "asm_linkage.h" file includes some handy macros useful for assembly, such as ENTRY_NP(), used to define a program entry point, and SET_SIZE(), used to set the function size in the symbol table. The function hello_asm calls C function printf() by passing two parameters, Parameter 1 (P1) is a printf format string, and P2 is a string variable. The function begins by moving %rdi, which contains Parameter 1 (P1) passed hello_asm, to printf()'s P2, %rsi. Then it sets printf's P1, the format string, by loading the address the address of the format string in %rdi, P1. Finally it calls printf. After returning from printf, the hello_asm function returns itself. Larger, more complex assembly functions usually do more setup than the example above. If a function is returning a value, it would set %rax to the return value. Also, it's typical for a function to save the %rbp and %rsp registers of the calling function and to restore these registers before returning. %rsp contains the stack pointer and %rbp contains the frame pointer. Here is the typical function setup and return sequence for a function: ENTRY_NP(sample_assembly_function) push %rbp // save frame pointer on stack mov %rsp, %rbp // save stack pointer in frame pointer xor %rax, %r4ax // set function return value to 0. mov %rbp, %rsp // restore stack pointer pop %rbp // restore frame pointer ret // return to calling function SET_SIZE(sample_assembly_function) Compiling and Running Assembly Use the Solaris cc command to compile both C and assembly source, and to pre-process assembly source. You can also use GNU gcc instead of cc to compile, if you prefer. The "-m64" option tells the compiler to compile in 64-bit address mode (instead of 32-bit). $ cc -m64 -o helloas2-cpp.s -D_ASM -E helloas2.s $ cc -m64 -c -o helloas2.o helloas2-cpp.s $ cc -m64 -c helloas1.c $ cc -m64 -o hello-asm helloas1.o helloas2.o $ file hello-asm helloas1.o helloas2.o hello-asm: ELF 64-bit LSB executable AMD64 Version 1 [SSE FXSR FPU], dynamically linked, not stripped helloas1.o: ELF 64-bit LSB relocatable AMD64 Version 1 helloas2.o: ELF 64-bit LSB relocatable AMD64 Version 1 $ hello-asm The string is: Hello, World!. Debugging Assembly with MDB MDB is the Solaris system debugger. It can also be used to debug user programs, including assembly and C. The following example runs the above program, hello-asm, under control of the debugger. In the example below I load the program, set a breakpoint at the assembly function hello_asm, display the registers and the first parameter, step through the assembly function, and continue execution. $ mdb hello-asm # Start the debugger > hello_asm:b # Set a breakpoint > ::run # Run the program under the debugger mdb: stop at hello_asm mdb: target stopped at: hello_asm: movq %rdi,%rsi > $C # display function stack ffff80ffbffff6e0 hello_asm() ffff80ffbffff6f0 0x400adc() > $r # display registers %rax = 0x0000000000000000 %r8 = 0x0000000000000000 %rbx = 0xffff80ffbf7f8e70 %r9 = 0x0000000000000000 %rcx = 0x0000000000000000 %r10 = 0x0000000000000000 %rdx = 0xffff80ffbffff718 %r11 = 0xffff80ffbf537db8 %rsi = 0xffff80ffbffff708 %r12 = 0x0000000000000000 %rdi = 0x0000000000400cf8 %r13 = 0x0000000000000000 %r14 = 0x0000000000000000 %r15 = 0x0000000000000000 %cs = 0x0053 %fs = 0x0000 %gs = 0x0000 %ds = 0x0000 %es = 0x0000 %ss = 0x004b %rip = 0x0000000000400c70 hello_asm %rbp = 0xffff80ffbffff6e0 %rsp = 0xffff80ffbffff6c8 %rflags = 0x00000282 id=0 vip=0 vif=0 ac=0 vm=0 rf=0 nt=0 iopl=0x0 status=<of,df,IF,tf,SF,zf,af,pf,cf> %gsbase = 0x0000000000000000 %fsbase = 0xffff80ffbf782a40 %trapno = 0x3 %err = 0x0 > ::dis # disassemble the current instructions hello_asm: movq %rdi,%rsi hello_asm+3: leaq 0x400c90,%rdi hello_asm+0xb: call -0x220 <PLT:printf> hello_asm+0x10: ret 0x400c81: nop 0x400c85: nop 0x400c88: nop 0x400c8c: nop 0x400c90: pushq %rsp 0x400c91: pushq $0x74732065 0x400c96: jb +0x69 <0x400d01> > 0x0000000000400cf8/S # %rdi contains Parameter 1 0x400cf8: Hello, World! > [ # Step and execute 1 instruction mdb: target stopped at: hello_asm+3: leaq 0x400c90,%rdi > [ mdb: target stopped at: hello_asm+0xb: call -0x220 <PLT:printf> > [ The string is: Hello, World!. mdb: target stopped at: hello_asm+0x10: ret > [ mdb: target stopped at: main+0x19: movl $0x0,-0x4(%rbp) > :c # continue program execution mdb: target has terminated > $q # quit the MDB debugger $ In the example above, at the start of function hello_asm(), I display the stack contents with "$C", display the registers contents with "$r", then disassemble the current function with "::dis". The first function parameter, which is a C string, is passed by reference with the string address in %rdi (see the register usage chart above). The address is 0x400cf8, so I print the value of the string with the "/S" MDB command: "0x0000000000400cf8/S". I can also print the contents at an address in several other formats. Here's a few popular formats. For more, see the mdb(1) man page for details. address/S C string address/C ASCII character (1 byte) address/E unsigned decimal (8 bytes) address/U unsigned decimal (4 bytes) address/D signed decimal (4 bytes) address/J hexadecimal (8 bytes) address/X hexadecimal (4 bytes) address/B hexadecimal (1 bytes) address/K pointer in hexadecimal (4 or 8 bytes) address/I disassembled instruction Finally, I step through each machine instruction with the "[" command, which steps over functions. If I wanted to enter a function, I would use the "]" command. Then I continue program execution with ":c", which continues until the program terminates. MDB Basic Cheat Sheet Here's a brief cheat sheet of some of the more common MDB commands useful for assembly debugging. There's an entire set of macros and more powerful commands, especially some for debugging the Solaris kernel, but that's beyond the scope of this example. $C Display function stack with pointers $c Display function stack $e Display external function names $v Display non-zero variables and registers $r Display registers ::fpregs Display floating point (or "media" registers). Includes %st, %xmm, and %ymm registers. ::status Display program status ::run Run the program (followed by optional command line parameters) $q Quit the debugger address:b Set a breakpoint address:d Delete a breakpoint $b Display breakpoints :c Continue program execution after a breakpoint [ Step 1 instruction, but step over function calls ] Step 1 instruction address::dis Disassemble instructions at an address ::events Display events Further Information "Assembly Language Techniques for Oracle Solaris on x86 Platforms" by Paul Lowik (2004). Good tutorial on Solaris x86 optimization with assembly. The Solaris Operating System on x86 Platforms An excellent, detailed tutorial on X86 architecture, with Solaris specifics. By an ex-Sun employee, Frank Hofmann (2005). "AMD64 ABI Features", Solaris 64-bit Developer's Guide contains rules on data types and register usage for Intel 64/AMD64-class processors. (available at docs.oracle.com) Solaris X86 Assembly Language Reference Manual (available at docs.oracle.com) SPARC Assembly Language Reference Manual (available at docs.oracle.com) System V Application Binary Interface (2003) defines the AMD64 ABI for UNIX-class operating systems, including Solaris, Linux, and BSD. Google for it—the original website is gone. cc(1), gcc(1), and mdb(1) man pages.

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  • how this scaling down for css code is worked?

    - by harris
    this is a code for scaling down for css. i was wondering, how this worked. please someone explain to me part by part. thank you very much. /* ======================================================================== / / Copyright (C) 2000 - 2009 ND-Tech. Co., Ltd. / / All Rights Reserved. / / ======================================================================== / / Project : ScaleDown Created : 31-AUG-2009 / / File : main.c Contact : [email protected] / / ======================================================================== / / You are free to use or modify this code to the following restrictions: / / Acknowledge ND Tech. Co. Ltd. / / Or, put "Parts of code by ND Tech. Co., Ltd." / / Or, leave this header as it is. / / in somewhere in your code. / / ======================================================================== */ include "vm3224k.h" define CE0CTL *(volatile int *)(0x01800008) define CE2CTL *(volatile int *)(0x01800010) define SDCTL *(volatile int *)(0x01800018) define LED *(volatile short *)(0x90080000) // Definitions for async access(change as you wish) define WSU (2<<28) // Write Setup : 0-15 define WST (8<<22) // Write Strobe: 0-63 define WHD (2<<20) // Write Hold : 0-3 define RSU (2<<16) // Read Setup : 0-15 define TA (3<<14) // Turn Around : 0-3 define RST (8<<8) // Read Strobe : 0-63 define RHD (2<<0) // Read Hold : 0-3 define MTYPE (2<<4) /* EDMA Registers */ define PaRAM_OPT 0 // Options define PaRAM_SRC 1 // Source Address define PaRAM_CNT 2 // Frame count, Element count define PaRAM_DST 3 // Destination Address define PaRAM_IDX 4 // Frame index, Element index define PaRAM_RDL 5 // Element count reload, Link address define EDMA_CIPR *(volatile int *)0x01A0FFE4 // EDMA Channel interrupt pending low register define EDMA_CIER *(volatile int *)0x01A0FFE8 // EDMA Channel interrupt enable low register define EDMA_CCER *(volatile int *)0x01A0FFEC // EDMA Channel chain enable register define EDMA_ER *(volatile int *)0x01A0FFF0 // EDMA Event low register define EDMA_EER *(volatile int *)0x01A0FFF4 // EDMA Event enable low register define EDMA_ECR *(volatile int *)0x01A0FFF8 // EDMA Event clear low register define EDMA_ESR *(volatile int *)0x01A0FFFC // EDMA Event set low register define PRI (2<<29) // 1:High priority, 2:Low priority define ESIZE (1<<27) // 0:32bit, 1:16bit, 2:8bit, 3:reserved define DS2 (0<<26) // 1:2-Dimensional define SUM (0<<24) // 0:no update, 1:increment, 2:decrement, 3:by index define DD2 (0<<23) // 1:2-Dimensional define DUM (0<<21) // 0:no update, 1:increment, 2:decrement, 3:by index define TCINT (1<<20) // 0:disable, 1:enable define TCC (8<<16) // 4 bit code define LINK (0<<1) // 0:disable, 1:enable define FS (1<<0) // 0:element, 1:frame define OptionField_0 (PRI|ESIZE|DS2|SUM|DD2|DUM|TCINT|TCC|LINK|FS) define DD2_1 (1<<23) // 1:2-Dimensional define DUM_1 (1<<21) // 0:no update, 1:increment, 2:decrement, 3:by index define TCC_1 (9<<16) // 4 bit code define OptionField_1 (PRI|ESIZE|DS2|SUM|DD2_1|DUM_1|TCINT|TCC_1|LINK|FS) define TCC_2 (10<<16)// 4 bit code define OptionField_2 (PRI|ESIZE|DS2|SUM|DD2|DUM|TCINT|TCC_2|LINK|FS) define DS2_3 (1<<26) // 1:2-Dimensional define SUM_3 (1<<24) // 0:no update, 1:increment, 2:decrement, 3:by index define TCC_3 (11<<16)// 4 bit code define OptionField_3 (PRI|ESIZE|DS2_3|SUM_3|DD2|DUM|TCINT|TCC_3|LINK|FS) pragma DATA_SECTION ( lcd,".sdram" ) pragma DATA_SECTION ( cam,".sdram" ) pragma DATA_SECTION ( rgb,".sdram" ) pragma DATA_SECTION ( u,".sdram" ) extern cregister volatile unsigned int IER; extern cregister volatile unsigned int CSR; short camcode = 0x08000; short lcdcode = 0x00000; short lcd[2][240][320]; short cam[2][240][320]; short rgb[64][32][32]; short bufsel; int *Cevent,*Levent,*CLink,flag=1; unsigned char v[240][160],out_y[120][160]; unsigned char y[240][320],out_u[120][80]; unsigned char u[240][160],out_v[120][80]; void PLL6713() { int i; // CPU Clock Input : 50MHz *(volatile int *)(0x01b7c100) = *(volatile int *)(0x01b7c100) & 0xfffffffe; for(i=0;i<4;i++); *(volatile int *)(0x01b7c100) = *(volatile int *)(0x01b7c100) | 0x08; *(volatile int *)(0x01b7c114) = 0x08001; // 50MHz/2 = 25MHz *(volatile int *)(0x01b7c110) = 0x0c; // 25MHz * 12 = 300MHz *(volatile int *)(0x01b7c118) = 0x08000; // SYSCLK1 = 300MHz/1 = 300MHz *(volatile int *)(0x01b7c11c) = 0x08001; // SYSCLK2 = 300MHz/2 = 150MHz // Peripheral Clock *(volatile int *)(0x01b7c120) = 0x08003; // SYSCLK3 = 300MHz/4 = 75MHz // SDRAM Clock for(i=0;i<4;i++); *(volatile int *)(0x01b7c100) = *(volatile int *)(0x01b7c100) & 0xfffffff7; for(i=0;i<4;i++); *(volatile int *)(0x01b7c100) = *(volatile int *)(0x01b7c100) | 0x01; } unsigned short ybr_565(short y,short u,short v) { int r,g,b; b = y + 1772*(u-128)/1000; if (b<0) b=0; if (b>255) b=255; g = y - (344*(u-128) + 714*(v-128))/1000; if (g<0) g=0; if (g>255) g=255; r = y + 1402*(v-128)/1000; if (r<0) r=0; if (r>255) r=255; return ((r&0x0f8)<<8)|((g&0x0fc)<<3)|((b&0x0f8)>>3); } void yuyv2yuv(char *yuyv,char *y,char *u,char *v) { int i,j,dy,dy1,dy2,s; for (j=s=dy=dy1=dy2=0;j<240;j++) { for (i=0;i<320;i+=2) { u[dy1++] = yuyv[s++]; y[dy++] = yuyv[s++]; v[dy2++] = yuyv[s++]; y[dy++] = yuyv[s++]; } } } interrupt void c_int06(void) { if(EDMA_CIPR&0x800){ EDMA_CIPR = 0xffff; bufsel=(++bufsel&0x01); Cevent[PaRAM_DST] = (int)cam[(bufsel+1)&0x01]; Levent[PaRAM_SRC] = (int)lcd[(bufsel+1)&0x01]; EDMA_ESR = 0x80; flag=1; } } void main() { int i,j,k,y0,y1,v0,u0; bufsel = 0; CSR &= (~0x1); PLL6713(); // Initialize C6713 PLL CE0CTL = 0xffffbf33;// SDRAM Space CE2CTL = (WSU|WST|WHD|RSU|RST|RHD|MTYPE); SDCTL = 0x57115000; vm3224init(); // Initialize vm3224k2 vm3224rate(1); // Set frame rate vm3224bl(15); // Set backlight VM3224CNTL = VM3224CNTL&0xffff | 0x2; // vm3224 interrupt enable for (k=0;k<64;k++) // Create RGB565 lookup table for (i=0;i<32;i++) for (j=0;j<32;j++) rgb[k][i][j] = ybr_565(k<<2,i<<3,j<<3); Cevent = (int *)(0x01a00000 + 24 * 7); Cevent[PaRAM_OPT] = OptionField_0; Cevent[PaRAM_SRC] = (int)&camcode; Cevent[PaRAM_CNT] = 1; Cevent[PaRAM_DST] = (int)&VM3224ADDH; Cevent = (int *)(0x01a00000 + 24 * 8); Cevent[PaRAM_OPT] = OptionField_1; Cevent[PaRAM_SRC] = (int)&VM3224DATA; Cevent[PaRAM_CNT] = (239<<16)|320; Cevent[PaRAM_DST] = (int)cam[bufsel]; Cevent[PaRAM_IDX] = 0; Levent = (int *)(0x01a00000 + 24 * 9); Levent[PaRAM_OPT] = OptionField_2; Levent[PaRAM_SRC] = (int)&lcdcode; Levent[PaRAM_CNT] = 1; Levent[PaRAM_DST] = (int)&VM3224ADDH; Levent = (int *)(0x01a00000 + 24 * 10); Levent[PaRAM_OPT] = OptionField_3; Levent[PaRAM_SRC] = (int)lcd[bufsel]; Levent[PaRAM_CNT] = (239<<16)|320; Levent[PaRAM_DST] = (int)&VM3224DATA; Levent[PaRAM_IDX] = 0; IER = IER | (1<<6)|3; CSR = CSR | 0x1; EDMA_CCER = (1<<8)|(1<<9)|(1<<10); EDMA_CIER = (1<<11); EDMA_CIPR = 0xffff; EDMA_ESR = 0x80; while (1) { if(flag) { // LED = 0; yuyv2yuv((char *)cam[bufsel],(char *)y,(char *)u,(char *)v); for(j=0;j<240;j++) for(i=0;i<320;i++) lcd[bufsel][j][i]=0; for(j=0;j<240;j+=2) for(i=0;i<320;i+=2) out_y[j>>1][i>>1]=(y[j][i]+y[j][i+1]+y[j+1][i]+y[j+1][i+1])>>2; for(j=0;j<240;j+=2) for(i=0;i<160;i+=2) { out_u[j>>1][i>>1]=(u[j][i]+u[j][i+1]+u[j+1][i]+u[j+1][i+1])>>2; out_v[j>>1][i>>1]=(v[j][i]+v[j][i+1]+v[j+1][i]+v[j+1][i+1])>>2; } for (j=0;j<120;j++) for (i=0;i<160;i+=2) { y0 = out_y[j][i]>>2; u0 = out_u[j][i>>1]>>3; v0 = out_v[j][i>>1]>>3; y1 = out_y[j][i+1]>>2; lcd[bufsel][j+60][i+80]=rgb[y0][u0][v0]; lcd[bufsel][j+60][i+81]=rgb[y1][u0][v0]; } flag=0; // LED = 1; } } }

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  • Bad style programming, am I pretending too much?

    - by Luca
    I realized to work in an office with a quite bad code base. The base library implemented in years and years is quite limited, and most of that code is, honestly, horrible. Projects developed in the office are very large. Fine. I could define me a "perfectionist" (but often I'm not), and I thought to refactor an application (really a portion), which need a new (complex) feature. But, today, I really realized that it's not possible to refactor that application modules with a reasonable time (say, 24/26 hours, respect the avaialable time for the task, which is 160 hours). I'm talking about (I am a bit ashamed to say) name collisions, large and frequent cut & paste code, horrible and misleading naming, makefiles without dependencies (!), application login is spread randomly across many different sources, dead code, variable aliasing, no assertion, no documentation, very long source files, bad/incomplete include file definition, (this is emblematic!) very frequent extern declaration of variables and functions, ... I'm sure to continue ... buffer overflows because sprintf, indentation (!), spacing, non existent const modifier usage. I would say that every source line was written quite randomly when needed, without keeping in mind some design (at least, the obvious one). (Am I in hell?) The problem arises when the application is developed by a colleague of mine. I felt very frustrated. So, I decided to expose the "situation" to my colleague; at the end, that was a bad idea. He is justified in saying that "the application was developed in haste, so it is natural that it is written vaguely; you are wasting time to think and implement an elegant implementation" .... I'm asking too much from my colleague to write readable code, which is managed and documented? I expect too much in not having to read thousands of lines of code to understand how a particular logic?

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  • C#/XNA get hardware mouse position

    - by Sunder
    I'm using C# and trying to get hardware mouse position. First thing I tryed was simple XNA functionality that is simple to use Vector2 position = new Vector2(Mouse.GetState().X, Mouse.GetState().Y); After that i do the drawing of mouse as well, and comparing to windows hardware mouse, this new mouse with xna provided coordinates is "slacking off". By that i mean, that it is behind by few frames. For example if game is runing at 600 fps, of curse it will be responsive, but at 60 fps software mouse delay is no longer acceptable. Therefore I tried using what I thought was a hardware mouse, [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool GetCursorPos(out POINT lpPoint); but the result was exactly the same. I also tried geting Windows form cursor, and that was a dead end as well - worked, but with the same delay. Messing around with xna functionality: GraphicsDeviceManager.SynchronizeWithVerticalRetrace = true/false Game.IsFixedTimeStep = true/fale did change the delay time for somewhat obvious reasons, but the bottom line is that regardless it still was behind default Windows mouse. I'v seen in some games, that they provide option for hardware acelerated mouse, and in others(I think) it is already by default. Can anyone give some lead on how to achieve that.

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  • How to set User Tile image Windows Server 2012?

    - by moontear
    I found this nice article of how to add a user tile image via code: http://joco.name/2010/12/06/i-discovered-the-new-windows-user-tile-api/ This is also explained in depth here: http://msitpros.com/?p=1036 I have problems with doing this in Windows Server 2012. Whenever I run the code: using System; using System.Runtime.InteropServices; namespace FejesJoco { class Program { [DllImport("shell32.dll", EntryPoint = "#262", CharSet = CharSet.Unicode, PreserveSig = false)] public static extern void SetUserTile(string username, int whatever, string picpath); [STAThread] static void Main(string[] args) { SetUserTile(args[0], 0, args[1]); } } } I get an exception: Error HRESULT E_FAIL has been returned from a call to a COM component. Can anyone get this to work and add a user tile image via code?

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  • Need help eliminating dead code paths and variables from C source code

    - by Anjum Kaiser
    I have a legacy C code on my hands, and I am given the task to filter dead/unused symbols and paths from it. Over the time there were many insertions and deletions, causing lots of unused symbols. I have identified many dead variables which were only being written to once or twice, but were never being read from. Both blackbox/whitebox/regression testing proved that dead code removal did not affected any procedures. (We have a comprehensive test-suite). But this removal was done only on a small part of code. Now I am looking for some way to automate this work. We rely on GCC to do the work. P.S. I'm interested in removing stuff like: variables which are being read just for the sake of reading from them. variables which are spread across multiple source files and only being written to. For example: file1.c: int i; file2.c: extern int i; .... i=x;

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  • Getting the total number of processors a computer has (c#)

    - by mbcrump
    Here is a code snippet for getting the total number of processors a computer has without using Environment.ProcessorCount. I found out that Environment.ProcessorCount is not necessary returning the correct value on some Intel based CPU’s.   using System; usingSystem.Collections.Generic; usingSystem.Linq; usingSystem.Text; usingSystem.Globalization; usingSystem.Runtime.InteropServices; namespaceConsoleApplication4 {     classProgram    {         static voidMain(string[] args)         {             int c = ProcessorCount;             Console.WriteLine("The computer has {0} processors", c);             Console.ReadLine();         }         private static classNativeMethods        {             [StructLayout(LayoutKind.Sequential)]             internal struct SYSTEM_INFO            {                 public ushort wProcessorArchitecture;                 public ushort wReserved;                 public uint dwPageSize;                 publicIntPtr lpMinimumApplicationAddress;                 publicIntPtr lpMaximumApplicationAddress;                 publicUIntPtr dwActiveProcessorMask;                 public uint dwNumberOfProcessors;                 public uint dwProcessorType;                 public uint dwAllocationGranularity;                 public ushort wProcessorLevel;                 public ushort wProcessorRevision;             }             [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]             internal static extern voidGetNativeSystemInfo(refSYSTEM_INFOlpSystemInfo);         }         public static int ProcessorCount         {             get            {                 NativeMethods.SYSTEM_INFOlpSystemInfo = newNativeMethods.SYSTEM_INFO();                 NativeMethods.GetNativeSystemInfo(reflpSystemInfo);                 return(int)lpSystemInfo.dwNumberOfProcessors;             }         }     } }

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  • My application had a WindowsIdentity crisis

    - by Brian Donahue
    The project I have been working on this week to test computer environments needs to do various actions as a user other than the one running the application. For instance, it looks up an installed Windows Service, finds out who the startup user is, and tries to connect to a database as that Windows user. Later on, it will need to access a file in the context of the currently logged-in user. With ASP .NET, this is super-easy: just go into Web.Config and set up the "identity impersonate" node, which can either impersonate a named user or the one who had logged into the website if authentication was enabled. With Windows applications, this is not so straightforward. There may be something I am overlooking, but the limitation seems to be that you can only change the security context on the current thread: any threads spawned by the impersonated thread also inherit the impersonated credentials. Impersonation is easy enough to do, once you figure out how. Here is my code for impersonating a user on the current thread:         using System;         using System.ComponentModel;         using System.Runtime.InteropServices;         using System.Security.Principal;         public class ImpersonateUser         {                 IntPtr userHandle;   [DllImport("advapi32.dll", SetLastError = true)]                 static extern bool LogonUser(                         string lpszUsername,                         string lpszDomain,                         string lpszPassword,                         LogonType dwLogonType,                         LogonProvider dwLogonProvider,                         out IntPtr phToken                         );                     [DllImport("kernel32.dll", SetLastError = true)]                 static extern bool CloseHandle(IntPtr hHandle);                     enum LogonType : int                 {                         Interactive = 2,                         Network = 3,                         Batch = 4,                         Service = 5,                         NetworkCleartext = 8,                         NewCredentials = 9,                 }                     enum LogonProvider : int                 {                         Default = 0,                 }                 public static WindowsImpersonationContext Impersonate(string user, string domain, string password)                 {   IntPtr userHandle = IntPtr.Zero;                         bool loggedOn = LogonUser(                                 user,                                 domain,                                 password,                                 LogonType.Interactive,                                 LogonProvider.Default,                                 out userHandle);                               if (!loggedOn)                         throw new Win32Exception(Marshal.GetLastWin32Error());                           WindowsIdentity identity = new WindowsIdentity(userHandle);                         WindowsPrincipal principal = new WindowsPrincipal(identity);                         System.Threading.Thread.CurrentPrincipal = principal;                         return identity.Impersonate();   }         }   /* Call impersonation */ ImpersonateUser.Impersonate("UserName","DomainName","Password"); /* When you want to go back to the original user */ WindowsIdentity.Impersonate(IntPtr.Zero); When you want to stop impersonating, you can call Impersonate() again with a null pointer. This will allow you to simulate a variety of different Windows users from the same applicaiton.

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  • Working hours for a newbie

    - by martani_net
    This is not a very related software / hardware question, but it's too related to the Tech world. I started a work 3 months before, and I am about to finish this week, and my boss asked me to do a planning of what I've done so far, I think this is totally ok, but he is asking for what I did each day with the hours I spent in these days. This is a sample of what I sent him M T W T F week 29/06 to 03/07 compréhension et analyse du problématique * * architecture de l'application * * * which translates to first task, I spent Monday + Tuesday on, and the last W, T, and Friday. What he is asking for, is what I've done in each day, with the timing I spent on (obviously, I don't think I remember, and because for a programmer, there are no sequence tasks, I mean I change code in a class, then change it in another to fit with the new one and so far) So my question is: is what he asking normal? and if so how can I detail the planning for the 3 months. [update] I used the email account we use to test our software with the extern servers, and I got a good view of what I was doing in every day :), a generic view but it helped too much (PS: The boss doesn't know anything about programming, for him, it's like writing lines and get results back nothing more )

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  • calling delphi dll from c#

    - by Wouter Roux
    Hi, I have a Delphi dll defined like this: TMPData = record Lastname, Firstname: array[0..40] of char; Birthday: TDateTime; Pid: array[0..16] of char; Title: array[0..20] of char; Female: Boolean; Street: array[0..40] of char; ZipCode: array[0..10] of char; City: array[0..40] of char; Phone, Fax, Department, Company: array[0..20] of char; Pn: array[0..40] of char; In: array[0..16] of char; Hi: array[0..8] of char; Account: array[0..20] of char; Valid, Status: array[0..10] of char; Country, NameAffix: array[0..20] of char; W, H: single; Bp: array[0..10] of char; SocialSecurityNumber: array[0..9] of char; State: array[0..2] of char; end; function Init(const tmpData: TMPData; var ErrorCode: integer; ResetFatalError: boolean = false): boolean; procedure GetData(out tmpData: TMPData); My current c# signatures looks like this: [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] public struct TMPData { [MarshalAs(UnmanagedType.LPStr, SizeConst = 40)] public string Lastname; [MarshalAs(UnmanagedType.LPStr, SizeConst = 40)] public string Firstname; [MarshalAs(UnmanagedType.R8)] public double Birthday; [MarshalAs(UnmanagedType.LPStr, SizeConst = 16)] public string Pid; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Title; [MarshalAs(UnmanagedType.Bool)] public bool Female; [MarshalAs(UnmanagedType.LPStr, SizeConst = 40)] public string Street; [MarshalAs(UnmanagedType.LPStr, SizeConst = 10)] public string ZipCode; [MarshalAs(UnmanagedType.LPStr, SizeConst = 40)] public string City; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Phone; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Fax; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Department; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Company; [MarshalAs(UnmanagedType.LPStr, SizeConst = 40)] public string Pn; [MarshalAs(UnmanagedType.LPStr, SizeConst = 16)] public string In; [MarshalAs(UnmanagedType.LPStr, SizeConst = 8)] public string Hi; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Account; [MarshalAs(UnmanagedType.LPStr, SizeConst = 10)] public string Valid; [MarshalAs(UnmanagedType.LPStr, SizeConst = 10)] public string Status; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string Country; [MarshalAs(UnmanagedType.LPStr, SizeConst = 20)] public string NameAffix; [MarshalAs(UnmanagedType.I4)] public int W; [MarshalAs(UnmanagedType.I4)] public int H; [MarshalAs(UnmanagedType.LPStr, SizeConst = 10)] public string Bp; [MarshalAs(UnmanagedType.LPStr, SizeConst = 9)] public string SocialSecurityNumber; [MarshalAs(UnmanagedType.LPStr, SizeConst = 2)] public string State; } [DllImport("MyDll.dll")] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool Init(TMPData tmpData, int ErrorCode, bool ResetFatalError); [DllImport("MyDll.dll")] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool GetData(out TMPData tmpData); I first call Init setting the BirthDay, LastName and FirstName. I then call GetData but the TMPData structure I get back is incorrect. The FirstName, LastName and Birthday fields are populated but the data is incorrect. Is the mapping correct? ( "array[0..40] of char" equal to "[MarshalAs(UnmanagedType.LPStr, SizeConst = 40)]" )?

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  • What am I doing wrong with this use of StructLayout( LayoutKind.Explicit ) when calling a PInvoke st

    - by csharptest.net
    The following is a complete program. It works fine as long as you don't uncomment the '#define BROKEN' at the top. The break is due to a PInvoke failing to marshal a union correctly. The INPUT_RECORD structure in question has a number of substructures that might be used depending on the value in EventType. What I don't understand is that when I define only the single child structure of KEY_EVENT_RECORD it works with the explicit declaration at offset 4. But when I add the other structures at the same offset the structure's content get's totally hosed. //UNCOMMENT THIS LINE TO BREAK IT: //#define BROKEN using System; using System.Runtime.InteropServices; class ConIOBroken { static void Main() { int nRead = 0; IntPtr handle = GetStdHandle(-10 /*STD_INPUT_HANDLE*/); Console.Write("Press the letter: 'a': "); INPUT_RECORD record = new INPUT_RECORD(); do { ReadConsoleInputW(handle, ref record, 1, ref nRead); } while (record.EventType != 0x0001/*KEY_EVENT*/); Assert.AreEqual((short)0x0001, record.EventType); Assert.AreEqual(true, record.KeyEvent.bKeyDown); Assert.AreEqual(0x00000000, record.KeyEvent.dwControlKeyState & ~0x00000020);//strip num-lock and test Assert.AreEqual('a', record.KeyEvent.UnicodeChar); Assert.AreEqual((short)0x0001, record.KeyEvent.wRepeatCount); Assert.AreEqual((short)0x0041, record.KeyEvent.wVirtualKeyCode); Assert.AreEqual((short)0x001e, record.KeyEvent.wVirtualScanCode); } static class Assert { public static void AreEqual(object x, object y) { if (!x.Equals(y)) throw new ApplicationException(); } } [DllImport("Kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern IntPtr GetStdHandle(int nStdHandle); [DllImport("Kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern bool ReadConsoleInputW(IntPtr hConsoleInput, ref INPUT_RECORD lpBuffer, int nLength, ref int lpNumberOfEventsRead); [StructLayout(LayoutKind.Explicit)] public struct INPUT_RECORD { [FieldOffset(0)] public short EventType; //union { [FieldOffset(4)] public KEY_EVENT_RECORD KeyEvent; #if BROKEN [FieldOffset(4)] public MOUSE_EVENT_RECORD MouseEvent; [FieldOffset(4)] public WINDOW_BUFFER_SIZE_RECORD WindowBufferSizeEvent; [FieldOffset(4)] public MENU_EVENT_RECORD MenuEvent; [FieldOffset(4)] public FOCUS_EVENT_RECORD FocusEvent; //} #endif } [StructLayout(LayoutKind.Sequential)] public struct KEY_EVENT_RECORD { public bool bKeyDown; public short wRepeatCount; public short wVirtualKeyCode; public short wVirtualScanCode; public char UnicodeChar; public int dwControlKeyState; } [StructLayout(LayoutKind.Sequential)] public struct MOUSE_EVENT_RECORD { public COORD dwMousePosition; public int dwButtonState; public int dwControlKeyState; public int dwEventFlags; }; [StructLayout(LayoutKind.Sequential)] public struct WINDOW_BUFFER_SIZE_RECORD { public COORD dwSize; } [StructLayout(LayoutKind.Sequential)] public struct MENU_EVENT_RECORD { public int dwCommandId; } [StructLayout(LayoutKind.Sequential)] public struct FOCUS_EVENT_RECORD { public bool bSetFocus; } [StructLayout(LayoutKind.Sequential)] public struct COORD { public short X; public short Y; } } UPDATE: For those worried about the struct declarations themselves: bool is treated as a 32-bit value the reason for offset(4) on the data is to allow for the 32-bit structure alignment which prevents the union from beginning at offset 2. Again, my problem isn't making PInvoke work at all, it's trying to figure out why these additional structures (supposedly at the same offset) are fowling up the data by simply adding them.

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  • Dynamic loaded libraries and shared global symbols

    - by phlipsy
    Since I observed some strange behavior of global variables in my dynamically loaded libraries, I wrote the following test. At first we need a statically linked library: The header test.hpp #ifndef __BASE_HPP #define __BASE_HPP #include <iostream> class test { private: int value; public: test(int value) : value(value) { std::cout << "test::test(int) : value = " << value << std::endl; } ~test() { std::cout << "test::~test() : value = " << value << std::endl; } int get_value() const { return value; } void set_value(int new_value) { value = new_value; } }; extern test global_test; #endif // __BASE_HPP and the source test.cpp #include "base.hpp" test global_test = test(1); Then I wrote a dynamically loaded library: library.cpp #include "base.hpp" extern "C" { test* get_global_test() { return &global_test; } } and a client program loading this library: client.cpp #include <iostream> #include <dlfcn.h> #include "base.hpp" typedef test* get_global_test_t(); int main() { global_test.set_value(2); // global_test from libbase.a std::cout << "client: " << global_test.get_value() << std::endl; void* handle = dlopen("./liblibrary.so", RTLD_LAZY); if (handle == NULL) { std::cout << dlerror() << std::endl; return 1; } get_global_test_t* get_global_test = NULL; void* func = dlsym(handle, "get_global_test"); if (func == NULL) { std::cout << dlerror() << std::endl; return 1; } else get_global_test = reinterpret_cast<get_global_test_t*>(func); test* t = get_global_test(); // global_test from liblibrary.so std::cout << "liblibrary.so: " << t->get_value() << std::endl; std::cout << "client: " << global_test.get_value() << std::endl; dlclose(handle); return 0; } Now I compile the statically loaded library with g++ -Wall -g -c base.cpp ar rcs libbase.a base.o the dynamically loaded library g++ -Wall -g -fPIC -shared library.cpp libbase.a -o liblibrary.so and the client g++ -Wall -g -ldl client.cpp libbase.a -o client Now I observe: The client and the dynamically loaded library possess a different version of the variable global_test. But in my project I'm using cmake. The build script looks like this: CMAKE_MINIMUM_REQUIRED(VERSION 2.6) PROJECT(globaltest) ADD_LIBRARY(base STATIC base.cpp) ADD_LIBRARY(library MODULE library.cpp) TARGET_LINK_LIBRARIES(library base) ADD_EXECUTABLE(client client.cpp) TARGET_LINK_LIBRARIES(client base dl) analyzing the created makefiles I found that cmake builds the client with g++ -Wall -g -ldl -rdynamic client.cpp libbase.a -o client This ends up in a slightly different but fatal behavior: The global_test of the client and the dynamically loaded library are the same but will be destroyed two times at the end of the program. Am I using cmake in a wrong way? Is it possible that the client and the dynamically loaded library use the same global_test but without this double destruction problem?

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  • Explanation of SendMessage message numbers? (C#, Winforms)

    - by John
    I've successfully used the Windows SendMessage method to help me do various things in my text editor, but each time I am just copying and pasting code suggested by others, and I don't really know what it means. There is always a cryptic message number that is a parameter. How do I know what these code numbers mean so that I can actually understand what is happening and (hopefully) be a little more self-sufficient in the future? Thanks. Recent example: using System.Runtime.InteropServices; [DllImport("user32.dll")] static extern int SendMessage(IntPtr hWnd, uint wMsg,UIntPtr wParam, IntPtr lParam); SendMessage(myRichTextBox.Handle, (uint)0x00B6, (UIntPtr)0, (IntPtr)(-1));

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  • mouse_event WinAPI call not working when cursor is over Flash

    - by friederbluemle
    Hi, I am writing a small program which can simulate mouse clicks at specified positions. Using the Win32 API call mouse_event like so: [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] public static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint dwData, UIntPtr dwExtraInfo); [Flags] public enum MouseEventFlags : uint { LEFTDOWN = 0x00000002, LEFTUP = 0x00000004, MIDDLEDOWN = 0x00000020, MIDDLEUP = 0x00000040, MOVE = 0x00000001, ABSOLUTE = 0x00008000, RIGHTDOWN = 0x00000008, RIGHTUP = 0x00000010 } mouse_event((uint)(MouseEventFlags.LEFTDOWN | MouseEventFlags.LEFTUP), x, y, 0, UIntPtr.Zero); Works perfectly fine, except when the mouse cursor is over a Flash application. Flash seems to ignore the simulated mouse click. What could be the reason for this? And how do I fix it? Thank you!

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  • C Sharp -- PInvokeStackImbalance detected on a well documented function?

    - by Aaron Hammond
    Here is my code for a ClickMouse() function: [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] public static extern void mouse_event(long dwFlags, long dx, long dy, long cButtons, long dwExtraInfo); private const long MOUSEEVENTF_LEFTDOWN = 0x02; private const long MOUSEEVENTF_LEFTUP = 0x04; private const long MOUSEEVENTF_RIGHTDOWN = 0x08; private const long MOUSEEVENTF_RIGHTUP = 0x10; private void ClickMouse() { long X = Cursor.Position.X; long Y = Cursor.Position.Y; mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0); } For some reason, when my program comes to this code, it throws this error message: PInvokeStackImbalance was detected Message: A call to PInvoke function 'WindowsFormsApplication1!WindowsFormsApplication1.Form1::mouse_event' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature. Please help?

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  • In C#, How to obtain the target of a symbolic link (or Reparse Point)?

    - by Cheeso
    In .NET, I think I can determine if a file is a symbolic link by calling System.IO.File.GetAttributes(), and checking for the ReparsePoint bit. like so: var a = System.IO.File.GetAttributes(fileName); if ((a & FileAttributes.ReparsePoint) != 0) { // it's a symlink } How can I obtain the target of the symbolic link, in this case? ps: I know how to create a symbolic link. It requires P/Invoke: [Interop.DllImport("kernel32.dll", EntryPoint="CreateSymbolicLinkW", CharSet=Interop.CharSet.Unicode)] public static extern int CreateSymbolicLink(string lpSymlinkFileName, string lpTargetFileName, int dwFlags);

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  • Objective C defining UIColor constants

    - by futureelite7
    Hi, I have a iPhone application with a few custom-defined colors for my theme. Since these colors will be fixed for my UI, I would like to define the colors in a class to be included (Constants.h and Constants.m). How do I do that? (Simply defining them does not work because UIColors are mutable, and would cause errors - Initalizer not constant). /* Constants.h */ extern UIColor *test; /* Constants.m */ UIColor *test = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0]; Thanks!

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  • SendMessage vs. WndProc

    - by Poma
    I'm trying to extend TextBox control to add watermarking functionality. The example I've found on CodeProject is using imported SendMessage function. [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)] static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, uint wParam, [MarshalAs(UnmanagedType.LPWStr)] string lParam); void SetWatermark() { SendMessage(this.Handle, 0x1501, 0, "Sample"); } I'm wondering why not use protected WndProc instead void SetWatermark() { var m =new Message() { HWnd = this.Handle, Msg = 0x1501, WParam = (IntPtr)0, LParam = Marshal.StringToHGlobalUni("Sample") }; WndProc(ref m); } Both seem to work fine. Almost all examples I've seen on internet use SendMessagefunction. Why is that? Isn't WndProc function designed to replace SendMessage? P.S. I don't know right to convert string to IntPtr and found that Marshal.StringToHGlobalUni works ok. Is it right function to do this?

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  • Mixed-mode C++/CLI crashing: heap corruption in atexit (static destructor registration)

    - by thaimin
    I am working on deploying a program and the codebase is a mixture of C++/CLI and C#. The C++/CLI comes in all flavors: native, mixed (/clr), and safe (/clr:safe). In my development environment I create a DLL of all the C++/CLI code and reference that from the C# code (EXE). This method works flawlessly. For my releases that I want to release a single executable (simply stating that "why not just have a DLL and EXE separate?" is not acceptable). So far I have succeeded in compiling the EXE with all the different sources. However, when I run it I get the "XXXX has stopped working" dialog with options to Check online, Close and Debug. The problem details are as follows: Problem Event Name: APPCRASH Fault Module Name: StackHash_8d25 Fault Module Version: 6.1.7600.16559 Fault Module Timestamp: 4ba9b29c Exception Code: c0000374 Exception Offset: 000cdc9b OS Version: 6.1.7600.2.0.0.256.48 Locale ID: 1033 Additional Information 1: 8d25 Additional Information 2: 8d25552d834e8c143c43cf1d7f83abb8 Additional Information 3: 7450 Additional Information 4: 74509ce510cd821216ce477edd86119c If I debug and send it to Visual Studio, it reports: Unhandled exception at 0x77d2dc9b in XXX.exe: A heap has been corrupted Choosing break results in it stopping at ntdll.dll!77d2dc9b() with no additional information. If I tell Visual Studio to continue, the program starts up fine and seems to work without incident, probably since a debugger is now attached. What do you make of this? How do I avoid this heap corruption? The program seems to work fine except for this. My abridged compilation script is as follows (I have omitted my error checking for brevity): @set TARGET=x86 @set TARGETX=x86 @set OUT=%TARGETX% @call "%VS90COMNTOOLS%\..\..\VC\vcvarsall.bat" %TARGET% @set WIMGAPI=C:\Program Files\Windows AIK\SDKs\WIMGAPI\%TARGET% set CL=/Zi /nologo /W4 /O2 /GS /EHa /MD /MP /D NDEBUG /D _UNICODE /D UNICODE /D INTEGRATED /Fd%OUT%\ /Fo%OUT%\ set INCLUDE=%WIMGAPI%;%INCLUDE% set LINK=/nologo /LTCG /CLRIMAGETYPE:IJW /MANIFEST:NO /MACHINE:%TARGETX% /SUBSYSTEM:WINDOWS,6.0 /OPT:REF /OPT:ICF /DEFAULTLIB:msvcmrt.lib set LIB=%WIMGAPI%;%LIB% set CSC=/nologo /w:4 /d:INTEGRATED /o+ /target:module :: Compiling resources omitted @set CL_NATIVE=/c /FI"stdafx-native.h" @set CL_MIXED=/c /clr /LN /FI"stdafx-mixed.h" @set CL_PURE=/c /clr:safe /LN /GL /FI"stdafx-pure.h" @set NATIVE=... @set MIXED=... @set PURE=... cl %CL_NATIVE% %NATIVE% cl %CL_MIXED% %MIXED% cl %CL_PURE% %PURE% link /LTCG /NOASSEMBLY /DLL /OUT:%OUT%\core.netmodule %OUT%\*.obj csc %CSC% /addmodule:%OUT%\core.netmodule /out:%OUT%\GUI.netmodule /recurse:*.cs link /FIXED /ENTRY:GUI.Program.Main /OUT:%OUT%\XXX.exe ^ /ASSEMBLYRESOURCE:%OUT%\core.resources,XXX.resources,PRIVATE /ASSEMBLYRESOURCE:%OUT%\GUI.resources,GUI.resources,PRIVATE ^ /ASSEMBLYMODULE:%OUT%\core.netmodule %OUT%\gui.res %OUT%\*.obj %OUT%\GUI.netmodule Update 1 Upon compiling this with debug symbols and trying again, I do in fact get more information. The call stack is: msvcr90d.dll!_msize_dbg(void * pUserData, int nBlockUse) Line 1511 + 0x30 bytes msvcr90d.dll!_dllonexit_nolock(int (void)* func, void (void)* * * pbegin, void (void)* * * pend) Line 295 + 0xd bytes msvcr90d.dll!__dllonexit(int (void)* func, void (void)* * * pbegin, void (void)* * * pend) Line 273 + 0x11 bytes XXX.exe!_onexit(int (void)* func) Line 110 + 0x1b bytes XXX.exe!atexit(void (void)* func) Line 127 + 0x9 bytes XXX.exe!`dynamic initializer for 'Bytes::Null''() Line 7 + 0xa bytes mscorwks.dll!6cbd1b5c() [Frames below may be incorrect and/or missing, no symbols loaded for mscorwks.dll] ... The line of my code that 'causes' this (dynamic initializer for Bytes::Null) is: Bytes Bytes::Null; In the header that is declared as: class Bytes { public: static Bytes Null; } I also tried doing a global extern in the header like so: extern Bytes Null; // header Bytes Null; // cpp file Which failed in the same way. It seems that the CRT atexit function is responsible, being inadvertently required due to the static initializer. Fix As Ben Voigt pointed out the use of any CRT functions (including native static initializers) requires proper initialization of the CRT (which happens in mainCRTStartup, WinMainCRTStartup, or _DllMainCRTStartup). I have added a mixed C++/CLI file that has a C++ main or WinMain: using namespace System; [STAThread] // required if using an STA COM objects (such as drag-n-drop or file dialogs) int main() { // or "int __stdcall WinMain(void*, void*, wchar_t**, int)" for GUI applications array<String^> ^args_orig = Environment::GetCommandLineArgs(); int l = args_orig->Length - 1; // required to remove first argument (program name) array<String^> ^args = gcnew array<String^>(l); if (l > 0) Array::Copy(args_orig, 1, args, 0, l); return XXX::CUI::Program::Main(args); // return XXX::GUI::Program::Main(args); } After doing this, the program now gets a little further, but still has issues (which will be addressed elsewhere): When the program is solely in C# it works fine, along with whenever it is just calling C++/CLI methods, getting C++/CLI properties, and creating managed C++/CLI objects Events added by C# into the C++/CLI code never fire (even though they should) One other weird error is that an exception happens is a InvalidCastException saying can't cast from X to X (where X is the same as X...) However since the heap corruption is fixed (by getting the CRT initialized) the question is done.

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  • Weak-linking with static libraries

    - by Jaakko L.
    I have declared an external function with a GCC weak attribute in a .c file: extern int weakFunction( ) __attribute__ ((weak)); Compiled object file has weakFunction defined as a weak symbol. Output of nm: 1791: w weakFunction I am calling the weak defined function as follows: if (weakFunction != NULL) { weakFunction(); } When I link the program by defining the object files as parameters to GCC (gcc main.o weakf.o -o main.exe) weak symbols work fine. If I leave the weakf.o out of linking, the function address is NULL in main.c and the function won't be called. Problem is, when weakf.o is inside a static library, for some reason the linker doesn't find the function and the function address always ends up being NULL. Static library is created with ar: ar rcs weaklibrary weakf.o Anyone had similar problems?

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  • Handling exception from unmanaged dll in C#

    - by StuffHappens
    Hello. I have the following function written in C# public static string GetNominativeDeclension(string surnameNamePatronimic) { if(surnameNamePatronimic == null) throw new ArgumentNullException("surnameNamePatronimic"); IntPtr[] ptrs = null; try { ptrs = StringsToIntPtrArray(surnameNamePatronimic); int resultLen = MaxResultBufSize; int err = decGetNominativePadeg(ptrs[0], ptrs[1], ref resultLen); ThrowException(err); return IntPtrToString(ptrs, resultLen); } catch { return surnameNamePatronimic; } finally { FreeIntPtr(ptrs); } } Function decGetNominativePadeg is in unmanaged dll [DllImport("Padeg.dll", EntryPoint = "GetNominativePadeg")] private static extern Int32 decGetNominativePadeg(IntPtr surnameNamePatronimic, IntPtr result, ref Int32 resultLength); and throws an exception: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. The catch that is in C# code doesn't actually catch it. Why? How to handle this exception? Thank you for your help!

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