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  • Storing UTF8 string in a UnicodeString

    - by Mick
    In Delphi 2007 you can store a UTF8 string in a WideString and then pass that onto a Win32 function, e.g. var UnicodeStr: WideString; UTF8Str: WideString; begin UnicodeStr:='some unicode text'; UTF8Str:=UTF8Encode(UnicodeStr); Windows.SomeFunction(PWideChar(UTF8Str), ...) end; Delphi 2007 does not interfere with the contents of UTF8Str, i.e. it is left as a UTF8 encoded string stored in a WideString. But in Delphi 2010 I'm struggling to find a way to do the same thing, i.e. store a UTF8 encoded string in a WideString without it being automatically converted from UTF8. I cannot pass a pointer to UTF8 string (or RawByteString), e.g. the following will obviously not work: var UnicodeStr: WideString; UTF8Str: UTF8String; begin UnicodeStr:='some unicode text'; UTF8Str:=UTF8Encode(UnicodeStr); Windows.SomeFunction(PWideChar(UTF8Str), ...) end; Any help appreciated. Thanks.

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  • Manually Writing the HTML in TWebBrowser Pt. 2

    - by nomad311
    As the name suggests this is a continuation (sort of) of http://stackoverflow.com/questions/2784679/manually-writing-the-html-in-twebbrowser This time around I'm trying to add some auto-refresh logic to the HTML I get. I have pieced together an approach from several sources (see below). In short, I am trying to locate the title node and add a meta node after it (in the HTML head node). But, I get an access violation. Here is the source: iHtmlDoc := IHTMLDocument3(WebBrowser1.Document); iHtmlEleTitle := IHTMLElement2(iHtmlDoc.getElementsByName('title').item(0, 0)); iHtmlEle := IHTMLElement2(IHTMLDocument2(iHtmlDoc).createElement(Format('<meta http-equiv="refresh" content="%d">', [1]))); iHtmlEleTitle.insertAdjacentElement('afterEnd', IHTMLElement(iHtmlEle)); And A (technically not functionally) different way of doing it ...casting is slightly different here: IHTMLElement2(IHtmlDocument3(WebBrowser1.Document).getElementsByName('title').item(0, 0)).insertAdjacentElement('afterEnd', IHTMLDocument2(WebBrowser1.Document).createElement(Format('<meta http-equiv="refresh" content="%d">', [VPI_ISSUANCE_AUTO_RELOAD]))); Again all I get from Delphi is a access exception, and I fished through MSDN documentation on it, but now I'm hoping someone out there has gone through the same and has some insight. Any help? Sources (I think this is all of them): http://webdesign.about.com/od/metataglibraries/a/aa080300a.htm (auto-reload) http://delphi.about.com/od/adptips2005/qt/webbrowserhtml.htm (web browser document as an HTML document) http://msdn.microsoft.com/en-us/library/system.windows.forms.htmlelement.insertadjacentelement(VS.80).aspx (GetElementsByName) http://www.experts-exchange.com/Web_Development/Components/ActiveX/Q_26131034.html (insertAdjacentElement) http://www.experts-exchange.com/Programming/Languages/Pascal/Delphi/Q_23407977.html (GetElementsByName)

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  • Connecting to MS SQL Server 2005 via Web Service

    - by clear-cycle-corp
    Delphi 2010, dbExpress, and MS SQL Server 2005 DB Ok, I am trying to make a connection to a MS SQL 2005 DB using Delphi 2010 & DBExpress. If I create a standard delphi application and hard code my connection (IT WORKS!): procedure TForm1.Button1Click(Sender: TObject); var Conn: TSQLConnection; begin Conn:= TSQLConnection.Create(nil); Conn.ConnectionName:= 'VPUCDS_VPN_SE01'; Conn.LoadParamsOnConnect := True; Conn.LoginPrompt:=True; try Conn.Connected:= True; if Conn.Connected then ShowMessage('Connected!') else ShowMessage('NOT Connected!') finally Conn.Free; end; end; All the ini files, and DLLs reside in the same folder as my executable and yes, I have DBXMsSQL & MidasLib in the uses clause again, it works if its not a web service! However, if i then move the code over to a Web serices CGI module: function TTest.ConnectToDB: Boolean;stdcall; var Conn: TSQLConnection; begin Conn:= TSQLConnection.Create(nil); Conn.ConnectionName:= 'VPUCDS_VPN_SE01'; Conn.LoadParamsOnConnect := True; Conn.LoginPrompt:=True; try Conn.Connected:= True; result:= Conn.Connected; finally Conn.Free; end; end; Thanks

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  • Access violations in strange places when using Windows file dialogs

    - by Robert Oschler
    A long time ago I found out that I was getting access violations in my code due to the use of the Delphi Open File and/or Save File dialogs, which encapsulate the Windows dialogs. I asked some questions on a few forums and I was told that it may have been due to the way some programs add hooks to the shell system that result in DLLs getting injected in every process, some of which can cause havoc with a program. For the record, the programming environment I use is Delphi 6 Professional running on Windows XP 32-bit. At the time I got around it by not using Delphi's Dialog components and instead calling straight into comdlg32.dll. This solved the problem wonderfully. Today I was working with memory mapped files for the first time and sure enough, access violations started cropping up in weird parts of the code. I tried my comdlg32.dll direct calls and this time it didn't help. To isolate the problem as a test I created a list box with the exact same files I was using during testing. These are the exact same test files I was selecting from an Open File dialog and then launching my memory mapped file with. I set things up so that by clicking on a file in the list box, I would use that file in my memory mapped file test instead of calling into a comdlg32.dll dialog function to select a test file. Again, the access violatons vanished. To show you how dramatic a fix it was I went from experiencing an access violation within 1 to 3 trials to none at all. Unfortunately, it's going to bite me later on of course when I do need to use file dialogs. Has anyone else dealt with this issue too and found the real culprit? Did any of you find a solution I could use to fix this problem instead of dancing around it like I am now? Thanks in advance.

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  • Connecting to SQL Server 2005 via Web Service

    - by clear-cycle-corp
    Delphi 2010, dbExpress, and SQL Server 2005 DB I am trying to make a connection to a SQL Server 2005 DB using Delphi 2010 & DBExpress. If I create a standard delphi application and hard code my connection (IT WORKS!): procedure TForm1.Button1Click(Sender: TObject); var Conn: TSQLConnection; begin Conn:= TSQLConnection.Create(nil); Conn.ConnectionName:= 'VPUCDS_VPN_SE01'; Conn.LoadParamsOnConnect := True; Conn.LoginPrompt:=True; try Conn.Connected:= True; if Conn.Connected then ShowMessage('Connected!') else ShowMessage('NOT Connected!') finally Conn.Free; end; end; All the ini files, and DLLs reside in the same folder as my executable and yes, I have DBXMsSQL & MidasLib in the uses clause again, it works if its not a web service! However, if i then move the code over to a Web services CGI module: function TTest.ConnectToDB: Boolean;stdcall; var Conn: TSQLConnection; begin Conn:= TSQLConnection.Create(nil); Conn.ConnectionName:= 'VPUCDS_VPN_SE01'; Conn.LoadParamsOnConnect := True; Conn.LoginPrompt:=True; try Conn.Connected:= True; result:= Conn.Connected; finally Conn.Free; end; end; Thanks

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  • How I can compile this C++ code that fails with "'::main' must return 'int'"? [migrated]

    - by krisu
    I have tried to find a solution that make batch file start flashing on taskbar and only good solution was this post on Stack Overflow. But I can't compile the code with WinGW or anything else to EXE, only getting this error: hello.cpp:6:32: error: '::main' must return 'int' Right now, I'm using TDM-GCC to compile code, because it's bit better... Can somebody give me code that actually works or even better compile it to EXE already? P.S. Even more better if somebody could compile this Delphi code, because I can't find any software that's free.

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  • SVN on Team Foundation Server - Delphi 2010

    - by BahaiResearch.com
    We're looking to upgrade to Delphi 2010 and have Team Foundation Server as our source Control. Is there a plug in for TFS that allows clients to talk to it via SVN? I noticed that CodePlex, Microsoft's open source web service, supports TFS and SVN so am hoping that there is a SVN plug in for TFS. Ian

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  • Delphi low-level machine parameter access

    - by tonyhooley.mp
    There are many very low-level parameters measured by PCs and their processors (e.g. core temperatures, fan-speeds, voltage levels at various parts of the motherboard and processor internals) which are available and displayed by the BIOS, and by some aaplication programs. How does one access these low-level (real-time) data via Delphi? Is there a library? Is there a Windows API?

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  • Internet Explorer 8 crashes on Citrix, Windows 2003

    - by Workshop Alex
    Difficult to decide where this Q fits best. It's server-related and programming-related. But it's a user-problem so I'll put it here, first... I work on a (Delphi) application that uses an Internet Explorer component to show information to the user. It's not a web application, just a desktop application which creates HTML pages to display them within a browser component. Some of the information on these webpages are retrieved from a web server, while other information is provided "live" by the application itself. It works quite well, but it adds an IE-process (child process) next to my application. And this IE process seems to eat a lot of system resources. For normal users, this is not a real problem, so it's not an issue that I want to fix in the code. But one customer of this application uses it with about 100 users on a Citrix/Windows 2003 environment and they complain about problems with the application. IE8 tends to crash, not show, hang or cause other mayhap. Then again, I've warned them that -officially- I won't support any Citrix environment. But I'm willing to help them to find a solution to fix this, and if need be I could make minor changes to my code to help fix this issie. (If possible.) But basically, I need a solution that any user/administrator on this Citrix environment can follow/use. Any ideas on how to resolve this resource problem?

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  • QuickReport throws "There Is No Default Printer Currently Selected" Exception

    - by M Schenkel
    I have created a Delphi Service which prints TQuickReports. Everything works fine if compiled and run as a Windows Application. But when converted to operate as a service trying to create a form containing a TQuickRep component throws the exception. This service runs fine on many other boxes but not this one in particular. Here are some details: Using QuickReport version 4.07 Box is a Windows Server 2008 operating system. Using Delphi 2007 Printer.Printers.Count is returning a positive value. In fact I can list out all of the printers. I have tried running the service both using Local System Account and Logged on as an Admin.

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  • EFCreateError with JvCsvDataSet

    - by Kim Jensen
    I have been using JvCSVDataSet with Delphi 5 and it works fine. I just moved over to Delphi 2007 and now with the same program I get EFCreateError, cannot create file "" I got the error description from MAdexcept 3.0. Here are the code,I get the error in the line 'CADDCOUNT', but if I rem out that line then I don't get the error before I close the dataset. jvCsvDataSet1.FileName := 'C:\TEST.CSV'; jvCsvDataSet1.SaveToFile('C:\TEST.CSV'); jvCsvDataSet1.Active := True; jvCsvDataSet1.Append; jvCsvDataSet1.FieldByName('LINETYPE').Asstring := 'VERSION"; jvCsvDataSet1.FieldByName('CADDCOUNT').AsString := 'Company Name and address'; jvCsvDataSet1.Post; jvCsvDataSet1.Active := False; Thanks, for any help. Kim

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  • Incompatibilities between Indy 9 and Windows Server 2003?

    - by mcmar
    I'm having a problem with a Delphi application on some Windows 2003 servers. It uses a webservice call to connect with another server and transmit data back and forth. As soon as the app gets to the Authenticate method, the app dies. The app has worked for years on previous boxes with Win Server 2003, but it doesn't on freshly built machines. The machines are set up the same way for the most part, but there is clearly some config setting that differs that I'm not able to track down. Also, while the error becomes apparent in the call to Authenticate, packet sniffing proves that nothing ever happens between the app and the server it's trying to contact, which strengthens my thoughts that something is dieing early on in setting up the connection. I can't duplicate the error locally, so I can't step through the app in a debugger either. Any thoughts on why an Indy 9 Delphi web connection might silently fail?

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  • Best practice in this situation?

    - by Steve
    My Delphi program relies heavily on Outlook automation. Outlook versions prior to 2007-SP2 tend to get stuck in memory due to badly written addins and badly written Outlook code. If Outlook is stuck, calling CreateOleObject('Outlook.Application') or GetActiveObject ... doesn't return and keeps my application hanging till Outlook.exe is closed in the task manager. I've thought of a solution, but I'm unsure whether it's good practice or not. I'd start Outlook with CreateOleObject in a separate thread, wait 10 seconds in my main thread and if Outlook hangs (CreateOleObject doesn't return), offer the user to kill the Outlook.exe process from my program. But since I don't want to force the user to kill the Outlook.exe proccess, as an alternative I also need a way to kill the new thread in my program which keeps hanging now. My questions are: a, Is this good practice b, How can I terminate a hanging thread in Delphi without leaking memory? Is there a way?

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  • Highlighting effect to text and/or image similar to be synchronized with audio

    - by Irfan Mulic
    I am looking how to approach following problem: We have application that displays text with audio recorded material. We use Browser Control (Internet Explorer) in Delphi App to do this. We respond to events in Delphi code setting innerHTML for elements if we have to update the style ... Now, request is to add option to dynamically move the cursor or dynamically highlight the words spoken from the paragraph. It doesn't need to match absolutely the exact word spoken so we will have to dynamically update the content of position of highlighted word based on some timer or something (because it is not text to speach). What should be the most practical and easy approach to this kind of problem, all answers are greatly appreciated. Thanks.

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  • How to create a custom ADO Multi Dimensional Catalog with no database

    - by Alan Clark
    Does anyone know of an example of how to dynamically define and build ADO MD (ActiveX Data Objects Multidimensional) catalogs and cube definitions with a set of data other than a database? Background: we have a huge amount of data in our application that we export to a database and then query using the usual SQL joins, groups, sums etc to produce reports. The data in the application is originally in objects and arrays. The problem is the amount of data is so large the export can take 2 hours. So I am trying to figure out a good way of querying the objects in memory, either by a custom OLAP algorithm or library, or ADO MD. But I haven't been able to find an example of using ADO MD without a database behind it. We are using Delphi 2010 so would use ADO ActiveX but I imagine the ADO.NET MD is similar. I realize that if the application data was already stored in a database the problem would solve itself. Also if Delphi had LINQ capability I could query the objects and arrays that way.

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  • ShellExecute not working from IDE but works otherwise.

    - by Altar
    I want to create and then open a txt file using the ShellExecute command. I have used this code for years with Delphi 7 and it worked: function Executa(CONST ExeName, Parameters: string): Boolean; begin if Parameters= '' then Result:= ShellExecute(0, 'open', PChar(ExeName), NIL , nil, SW_SHOWNORMAL)> 32 else Result:= ShellExecute(0, 'open', PChar(ExeName), PChar(Parameters), nil, SW_SHOWNORMAL)> 32; end; Now, I switch to Windows 7 (don't like it; they stuck it on my throat with my new laptop) 64 bit and the code is not working anymore when it runs from IDE. Delhi shows the CPU window with the caption "CPU-Process unknown (2352)". I close the CU windows and everything works fine until I close the application, when Delphi shows the CPU window one more time. If I run the app from outside IDE, it works fine. Looks like the debugger has something to say to me, but I don't know what.

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  • If terminating a hung thread is a good idea, how do I do it safely?

    - by Steve
    My Delphi program relies heavily on Outlook automation. Outlook versions prior to 2007-SP2 tend to get stuck in memory due to badly written addins and badly written Outlook code. If Outlook is stuck, calling CreateOleObject('Outlook.Application') or GetActiveObject ... doesn't return and keeps my application hanging till Outlook.exe is closed in the task manager. I've thought of a solution, but I'm unsure whether it's good practice or not. I'd start Outlook with CreateOleObject in a separate thread, wait 10 seconds in my main thread and if Outlook hangs (CreateOleObject doesn't return), offer the user to kill the Outlook.exe process from my program. But since I don't want to force the user to kill the Outlook.exe process, as an alternative I also need a way to kill the new thread in my program which keeps hanging now. Is this good practice? How can I terminate a hanging thread in Delphi without leaking memory?

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  • How to create a custom ADO Multi Demensional Catalog with no database

    - by Alan Clark
    Does anyone know of an example of how to dynamically define and build ADO MD (ActiveX Data Objects Multidimensional) catalogs and cube definitions with a set of data other than a database? Background: we have a huge amount of data in our application that we export to a database and then query using the usual SQL joins, groups, sums etc to produce reports. The data in the application is originally in objects and arrays. The problem is the amount of data is so large the export can take 2 hours. So I am trying to figure out a good way of querying the objects in memory, either by a custom OLAP algorithm or library, or ADO MD. But I haven't been able to find an example of using ADO MD without a database behind it. We are using Delphi 2010 so would use ADO ActiveX but I imagine the ADO.NET MD is similar. I realize that if the application data was already stored in a database the problem would solve itself. Also if Delphi had LINQ capability I could query the objects and arrays that way.

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  • How to determine what invokes User Access Control restrictions?

    - by MX4399
    In a Delphi app intended to build an internet software update service for my software, the Windows 7 UAC system requests authorization from the user to run the exe.The following possible contentious/risk areas exist in the code: A named pipe server is created for communications TCP is used for FTP and HTTP SHGetSpecialFolderPath api call is used Before these items where added UAC did not activate, removing each in turn including all unit reference and then ending with the bare bones exe still causes the UAC event - so its not possible say what is causing it. On top of this Delphi 2007 now requires being launced as an administrator to launcg a debugging process for the app. Question 1 : How can I see what is causing this besides starting from scratch in a new exe - IOW is there a log somewhere I can check Question 2 : Will using a signed exe using authenticode still cause the UAC alert to show

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  • Logging into oracle db as a global user

    - by kineas
    We are trying to shape up an old, 2 tier, Delphi based application. It originally uses database authentication, we'd like to transform the db user accounts to global users, so an OID server could perform the authentication instead of the database. The Delphi program can no longer log into the database if the account is a global user. I'm trying to understand the login protocol, so far without results. Similar thing happens with SQLDeveloper, I can't connect as a global user. SQLPlus however works with both kinds of users. We checked the information flow with Wireshark. When the dbserver asks back for a password, the SQLPlus sends it, while the SQLDeveloper doesn't send a password when attempting to connect as a global user. The client sends the application name too in the login request. Is it possible that we have to store the client app name in the LDAP itself?

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  • If you were developing shareware softwares for windows, would you target the .Net Framework or use n

    - by bohoo
    For the sake of the question, by 'shareware' I mean a software which is relatively small in size (up to few dozens of mb) and available for download and evaluation through a web site. I'm asking this question, because I don't understand something regarding the current state of windows commercial desktop development. It seems to me that: There is no reliable statistic regarding the extent of windows systems with .Net Framework installed. It makes no sense to force the end user to install the 20-60mb .Net for an application which may be smaller. Applications conforms to the term 'shareware' above have a big share on the win os market. Much of them don't need the capabilities of low level languages like c++, and therefore ideally they should be developed with a RAD enviroment. So, One would suppose there will be a blossom of RAD enviroments for native win code. But I know about only one - Delphi, and Delphi is so unpopular. How is that?

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  • Ora-01000 - maximum open cursors exceeded error

    - by PeteDaMeat
    I am receiving the following error message within my Delphi/Oracle application "ora-01000 - maximum open cursors exceeded". The code is as follows: begin for i := 0 to 150 do begin with myADOQuery do begin SQL.Text := 'DELETE FROM SOMETABLE'; ExecSQL; -- from looking at V$OPEN_CURSOR a new cursor is added on each iteration for the session Close; -- thought this would close the cursor but doesn't end; end; end; I'm aware I can resolve the problem by simply increasing the number of OPEN_CURSORS parameters, however, I would rather find a solution whereby the cursor is closed after the query is executed. Any ideas? Delphi 2006 BDS Oracle 10g

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