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  • WPF scrollview scrolled to the bottom default

    - by code-zoop
    I have a scrollview containing a ListBox. I would like the scrollview to scroll all the way to the bottom by default when the view has been loaded! This because the most recent element is always the last element in the ListBox. Is there an easy way to achieve this behavior? Thanks

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  • Can any genius out there turn this code from generating permutation to generating combination?

    - by mark
    #include <string> int main(int,char**) { std::string default_str = "12345"; int perm=1, digits=default_str.size(); for (int i=1;i<=digits;perm*=i++); for (int a=0;a<perm;a++) { std::string avail=default_str; for (int b=digits,div=perm;b>0; b--) { div/=b; int index = (a/div)%b; printf("%c", avail[index] ); avail.erase(index,1) ; } printf("\n"); } printf("permutations:%d\n",perm); while(1); }

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  • Important Security Issue: Is it possible to put binary image data into html markup code and then get

    - by Joern Akkermann
    Hi, it's an important security issue and I'm sure this should be possible. A simple example: You run a community portal. Users are registered and upload their pictures. Your application gives security rules wenever a picture is allowed to be displayed. For example users must be friends on each sides by the system, in order that you can view someone elses uploaded pictures. Here comes the problem: it is possible that someone crawls the image directories of your server. But you want to protect your users from such attacks. If it's possible to put the binary data of an image directly into the html markup, you can restrict the user access of your image dirs the user and group your web application runs of and pass the image data to your apache user and group directly in the html. The only possible weakness then is the password of the user that your web app runs as. Is there already a possibility? Yours, Joern.

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  • Why is a 16-bit register used with BSR instruction in this code snippet?

    - by sharptooth
    In this hardcore article there's a function find_maskwidth() that basically detects the number of bits required to represent itemCount dictinct values: unsigned int find_maskwidth( unsigned int itemCount ) { unsigned int maskWidth, count = itemCount; __asm { mov eax, count mov ecx, 0 mov maskWidth, ecx dec eax bsr cx, ax jz next inc cx mov maskWidth, ecx next: } return maskWidth; } the question is why do they use ax and cx registers instead of eax and ecx?

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  • How to convert MP3 tp PCM using delphi code?

    - by XBasic3000
    I have TBass from http://www.un4seen.com/bass.html. I load mp3 and triying to change the format to PCM but it give me same result of mp3? acmForm.wFormatTag :=1; acmForm.nChannels :=1; acmForm.nSamplesPerSec :=8000; acmForm.nAvgBytesPerSec:=16000; acmForm.nBlockAlign := 2; acmForm.wBitsPerSample := 16; acmForm.cbSize := 0;

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  • how do I call create a name of a button variable in a code, with a number in it? (hard to explain)

    - by Sam Jarman
    Ive got a int, that is changed in a previous method, that now has to be part of the name of a button variable eg int numberFromLastOne; numberFromLastOne = 4; I then want to get 'button4' to do something. Could i use something like this? [[button@"%d", numberFromLastOne] doSomethign:withSomethignElse]; Ive never had to do something this before.... Any ideas would be appreciated :) Sam

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  • What am I missing in the following buttons code?

    - by Ayush Goyal
    I am trying to increment and decrement the middle textview via buttons on the sides. The application starts up finely but by the time I click on any of the buttons it gets closed with following error. Error: process <package> has stopped unexpectedly. My main.xml: <?xml version="1.0" encoding="utf-8"?> <Button android:id="@+id/button1" android:layout_width="50dp" android:layout_height="250dp" android:text="+" android:textSize="40dp" /> <TextView android:id="@+id/tv1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="0" android:textSize="80dp" android:layout_toRightOf="@+id/button1" android:layout_marginTop="75dp" android:layout_marginLeft="80dp" /> <Button android:id="@+id/button2" android:layout_width="50dp" android:layout_height="250dp" android:layout_alignParentRight="true" android:text="-" android:textSize="40dp" /> My java file: public class IncrementDecrementActivity extends Activity { int counter; Button add, sub; TextView tv; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); add = (Button) findViewById(R.id.button1); sub = (Button) findViewById(R.id.button2); tv = (TextView) findViewById(R.id.tv1); add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { counter++; tv.setText(counter); } }); sub.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { counter--; tv.setText(counter); } }); } }

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  • Why won't SWFUpload execute the upload.aspx code, and why is it saving all files to the root directo

    - by Nathan Fast
    I am using SWFUpload v2.2. In IE (8):   If I upload a very tiny file (16kb):      1) The file appears in the root directory where upload.aspx is located.      2) Page_Load on upload.aspx.cs is executed.      3) The file is actually processed by the Page_Load procedure, and the processed file is saved in the correct location.   If I upload a normal file (1.5 MB):      1) The file appears in the root directory where upload.aspx is located. In Firefox (3.5.7):   No matter what size the file is, it:      1) The file appears in the root directory where upload.aspx is located. I have maxRequestLength="30000" executionTimeout="3000" in the web.config just to be sure. In the setting object for the constructor I have:   file_size_limit: "10 MB",   file_types: ".",   file_types_description: "All Files", So my questions are:   How is the file getting saved in the root directory (and why)?   Why does Page_Load only execute when I am using IE and uploading very tiny files?

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  • What is the best approach for unit testing/integration testing GXT code?

    - by Arizonahockey
    I have been tasked to setup a continuous integration environment for a GXT 2.1.1 and GWT 2.0.1 environment. Unfortunately I am new to AJAX and Web Services and have little idea how to setup unit tests in the browser environment. Unit tests for the server backend I already have done, since I am a pro at that. GXT is not quite pure GWT which provides some unit testing structure. If anyone has a good starting point...

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  • Is there a way that I can hard code a const XmlNameTable to be reused by all of my XmlTextReader(s)?

    - by highone
    Before I continue I would just like to say I know that "Premature optimization is the root of all evil." However this program is only a hobby project and I enjoy trying to find ways to optimize it. That being said, I was reading an article on improving xml performance and it recommended sharing "the XmlNameTable class that is used to store element and attribute names across multiple XML documents of the same type to improve performance." I wasn't able to find any information about doing this in my googling, so it is likely that this is either not possible, a no-no, or a stupid question, but what's the harm in asking?

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  • g++ symbol versioning. Set it to GCC_3.0 using version 4 of g++

    - by Ismael
    Hi all I need to implemente a Java class which uses JNI to control a fiscal printer in XUbuntu 8.10 with sun-java6-jdk installed. The structure is the following: EpsonDriver.java loads libEpson.so libEpson is linked dynamically with EpsonFiscalProtocol.so ( provided by Epson, no source available ) and pthread I use javah to generate the header file, and the code compiles. Then I put the libEpson.so in $JAVA_HOME/jre/lib/i386, and EpsonDriver.java uses an static initializar System.loadLibrary("libEpson") That part works, however, when I try to use any of the methods I get an unsatisfiedLinkError exception. Some time ago, a coworker did a version that works, and using objdump -Dslx I got the following: Program Header: LOAD off 0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**12 filesz 0x0000ccc4 memsz 0x0000ccc4 flags r-x LOAD off 0x0000d000 vaddr 0x0000d000 paddr 0x0000d000 align 2**12 filesz 0x00000250 memsz 0x00044a5c flags rw- DYNAMIC off 0x0000d014 vaddr 0x0000d014 paddr 0x0000d014 align 2**2 filesz 0x000000f0 memsz 0x000000f0 flags rw- NOTE off 0x000000d4 vaddr 0x000000d4 paddr 0x000000d4 align 2**2 filesz 0x00000024 memsz 0x00000024 flags r-- STACK off 0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**2 filesz 0x00000000 memsz 0x00000000 flags rw- Dynamic Section: NEEDED EpsonFiscalProtocol.so NEEDED libpthread.so.0 NEEDED libstdc++.so.6 NEEDED libm.so.6 NEEDED libc.so.6 SONAME libcom_tichile_jpos_EpsonSerialDriver.so INIT 0x00007254 FINI 0x0000ba08 GNU_HASH 0x000000f8 STRTAB 0x00001f50 SYMTAB 0x00000ae0 STRSZ 0x00002384 SYMENT 0x00000010 PLTGOT 0x0000d108 PLTRELSZ 0x00000008 PLTREL 0x00000011 JMPREL 0x0000724c REL 0x000045c4 RELSZ 0x00002c88 RELENT 0x00000008 TEXTREL 0x00000000 VERNEED 0x00004564 VERNEEDNUM 0x00000002 VERSYM 0x000042d4 RELCOUNT 0x000000ac Version References: required from libstdc++.so.6: 0x056bafd3 0x00 05 CXXABI_1.3 0x08922974 0x00 04 GLIBCXX_3.4 required from libc.so.6: 0x0b792650 0x00 03 GCC_3.0 0x0d696910 0x00 02 GLIBC_2.0 In the recently compiled file I get: Program Header: LOAD off 0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**12 filesz 0x00005300 memsz 0x00005300 flags r-x LOAD off 0x00005300 vaddr 0x00006300 paddr 0x00006300 align 2**12 filesz 0x00000274 memsz 0x00010314 flags rw- DYNAMIC off 0x00005314 vaddr 0x00006314 paddr 0x00006314 align 2**2 filesz 0x000000e0 memsz 0x000000e0 flags rw- EH_FRAME off 0x00004a00 vaddr 0x00004a00 paddr 0x00004a00 align 2**2 filesz 0x00000154 memsz 0x00000154 flags r-- Dynamic Section: NEEDED libstdc++.so.5 NEEDED libm.so.6 NEEDED libgcc_s.so.1 NEEDED libc.so.6 SONAME EpsonFiscalProtocol.so INIT 0x00001cb4 FINI 0x00004994 HASH 0x000000b4 STRTAB 0x00000da4 SYMTAB 0x000004f4 STRSZ 0x00000acf SYMENT 0x00000010 PLTGOT 0x0000640c PLTRELSZ 0x00000270 PLTREL 0x00000011 JMPREL 0x00001a44 REL 0x000019dc RELSZ 0x00000068 RELENT 0x00000008 VERNEED 0x0000198c VERNEEDNUM 0x00000002 VERSYM 0x00001874 RELCOUNT 0x00000004 Version References: required from libstdc++.so.5: 0x056bafd2 0x00 04 CXXABI_1.2 required from libc.so.6: 0x09691f73 0x00 03 GLIBC_2.1.3 0x0d696910 0x00 02 GLIBC_2.0 So I suspect the main diference is the GCC_3.0 symbol I compile libcom_tichile_EpsonSerialDriver.so with the following command ( from memory as I not at work right now ) g++ -Wl,-soname=.... -shared -I/*jni libraries*/ -o libcom_tichile_jpos_EpsonSerialDriver -lEpsonFiscalProtocol -lpthread Is there any way to tell g++ to use that symbol version? Or any idea in how to make it work? EDIT: I have another non-working version with the followin dump: Program Header: LOAD off 0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**12 filesz 0x0000bf68 memsz 0x0000bf68 flags r-x LOAD off 0x0000cc0c vaddr 0x0000cc0c paddr 0x0000cc0c align 2**12 filesz 0x000005e8 memsz 0x00044df0 flags rw- DYNAMIC off 0x0000cc20 vaddr 0x0000cc20 paddr 0x0000cc20 align 2**2 filesz 0x000000f8 memsz 0x000000f8 flags rw- EH_FRAME off 0x0000b310 vaddr 0x0000b310 paddr 0x0000b310 align 2**2 filesz 0x000002bc memsz 0x000002bc flags r-- STACK off 0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**2 filesz 0x00000000 memsz 0x00000000 flags rw- RELRO off 0x0000cc0c vaddr 0x0000cc0c paddr 0x0000cc0c align 2**0 filesz 0x000003f4 memsz 0x000003f4 flags r-- Dynamic Section: NEEDED EpsonFiscalProtocol.so NEEDED libpthread.so.0 NEEDED libstdc++.so.6 NEEDED libm.so.6 NEEDED libgcc_s.so.1 NEEDED libc.so.6 SONAME libcom_tichile_jpos_EpsonSerialDriver.so INIT 0x000055d8 FINI 0x0000a968 HASH 0x000000f4 GNU_HASH 0x00000a30 STRTAB 0x00002870 SYMTAB 0x00001410 STRSZ 0x00002339 SYMENT 0x00000010 PLTGOT 0x0000cff4 PLTRELSZ 0x00000168 PLTREL 0x00000011 JMPREL 0x00005470 REL 0x00004ea8 RELSZ 0x000005c8 RELENT 0x00000008 VERNEED 0x00004e38 VERNEEDNUM 0x00000002 VERSYM 0x00004baa RELCOUNT 0x00000001 Version References: required from libstdc++.so.6: 0x056bafd3 0x00 05 CXXABI_1.3 0x08922974 0x00 03 GLIBCXX_3.4 required from libc.so.6: 0x09691f73 0x00 06 GLIBC_2.1.3 0x0d696914 0x00 04 GLIBC_2.4 0x0d696910 0x00 02 GLIBC_2.0 Now I think the main difference is in the GCC_3.0 symbol/ABI EDIT: Luckily, a coworker found a way to talk to the printer using Java

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  • changing the htaccess file in php

    - by tibin mathew
    Hi, I want to change the maximum file upload size in my website, for this i'm going to add some code lines in my .htaccess file. i have searched in google and i got the lines of code to add in .htaccess file. But i don't know exactly were to add that lines of code . Below is the lines of code currently in my .htaccess file code below -FrontPage- IndexIgnore .htaccess /.?? *~ *# /HEADER */README* */_vti* order deny,allow deny from all allow from all order deny,allow deny from allenter code here AuthName www.mysite.com AuthUserFile /www/htdocs/domains/s11/01712/www.mysite.com/webdocs/_vti_pvt/service.pwd AuthGroupFile /www/htdocs/domains/s11/01712/www.mysite.com/webdocs/_vti_pvt/service.grp AddHandler php5-script .php Here is the code to add php_value post_max_size 50M php_value upload_max_filesize 50M how to add this lines of code in .htaccess file and where?? Please help me.. Thanks

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  • Keeping a database structure up to date in a project where code is on subversion?

    - by Bruno De Barros
    I have been working with Subversion for a while now, and it's been incredible for the management of my projects, and even to help managing the deployment to several different servers, but there is just the one thing that still annoys me. Whenever I make any changes to the database structure, I need to update every server manually, I have to keep track of any changes I made, and because some of my servers run branches of the project (modifications that are still being worked on, or were made for different purposes), it's a bit awkward. Until now, I've been using a "database.sql" file, which is a dump of the database structure for a specific revision. But it just seems like such a bad way to manage this. And I was wondering, how does everyone else manage their MySQL databases when they're working on a project and using Subversion?

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  • PHP, create_function or evalute it at runtime?

    - by blow
    Hi all, i have a class with some method that depend by one parameter. What is the best way to write this method? Example: First way class Test{ var $code; function Test($type){ if($type=="A"){ $this->code=create_function(/*some args and some code*/); } else if($type=="B"){ $this->code=create_function(/*some args and some code*/); } } function use(/*some args*/){ return call_user_func($this->code,/*some args*/); } } Second way class Test{ var $type; function Test($type){ $this->type=$type; } function use(/*some args*/){ if($this->type=="A"){ //some code } else if($this->type=="B"){ //some code } } } $test=new Test("A"); $test->use(); Which way you would choose? Thanks.

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  • How do I use the information about exceptions a method throws in .NET in my code?

    - by dotnetdev
    For many methods in .NET, the exceptions they can potentially throw can be as many as 7-8 (one or two methods in XmlDocument, Load() being one I think, can throw this many exceptions). Does this mean I have to write 8 catch blocks to catch all of these exceptions (it is best practise to catch an exception with a specific exception block and not just a general catch block of type Exception). How do I use this information? Thanks

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  • Is it a good idea to "migrate business logic code into our domain model"?

    - by Bytecode Ninja
    I am reading Hibernate in Action and the author suggests to move business logic into our domain models (p. 306). For instance, in the example presented by the book, we have three entities named Item, Bid, and User and the author suggests to add a placeBid(User bidder, BigDecimal amount) method to the Item class. Considering that usually we have a distinct layer for business logic (e.g. Manager or Service classes in Spring) that among other things control transactions, etc. is this really a good advice? Isn't it better not to add business logic methods to our entities? Thanks in advance.

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  • ELMAH: Only sending specific exception type via mail

    - by Sir Code-A-Lot
    Hi, I have ELMAH set up for a webapp, logging exceptions to a SQL server. I wish to have ELMAH send me an email too, but only when a specific exception is thrown (ie. MySpecialException). ELMAH must still log all exceptions to SQL server. I know you can do it programmatically in global.asax, but I'd prefer to use web.config. So, how do I restrict ELMAH error mails to filter out everything but a specific exception type, using web.config?

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  • How can I make one Code::Blocks project dependent on another?

    - by George Edison
    I have a workspace with two projects in it. One is a static library (we'll call it Project A). The other is a console app that links with the static library (we'll call it Project B). I went to Project B's properties and checked off Project A as a dependency of Project B. So I make a change to a file in Project A and rebuild Project B. It correctly discovers the changes to the file in Project A and rebuilds Project A. However, when it gets to Project B it says: Target is up to date. Nothing to be done. How can I tell it to run the linker everytime Project A is changed?

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