Command Line Arguments in Unicode

This is a discussion on Command Line Arguments in Unicode within the Windows Programming forums, part of the Platform Specific Boards category; What is the best method to access the command line arguments in a single source Unicode/ASCII program? I use __argc ...

  1. #1
    jasondoucette.com JasonD's Avatar
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    Command Line Arguments in Unicode

    What is the best method to access the command line arguments in a single source Unicode/ASCII program?

    I use __argc and __argv[] to access command line arguments from within MSVC++, however this does not work for strings defined as TCHAR for compliance with Unicode. Is GetCommandLine() and CommandLineToArgvW() the way to go?

  2. #2
    &TH of undefined behavior Fordy's Avatar
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    GetCommandLine is good...but you could also;

    Code:
    #define UNICODE
    #define _UNICODE
    #include <windows.h>   
    #include <tchar.h> 
    
    int WINAPI _tWinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,
    	LPTSTR lpCmdLine,int nCmdShow)
    {
    	TCHAR szBuff[] = _T("Hello World");
    	return MessageBox(HWND_DESKTOP,szBuff,_T(""),MB_OK);
    }

  3. #3
    i want wookie cookies the Wookie's Avatar
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    _TCHAR* argv[]?

  4. #4
    erstwhile
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    Re: Command Line Arguments in Unicode

    Originally posted by JasonD
    I use __argc and __argv[] to access command line arguments from within MSVC++
    You can continue to do so if you wish: __targv is defined in tchar.h as either __argv or __wargv(_UNICODE).

    You just have to use _tWinMain as in Fordy's example - or just parse the command line (LPTSTR lpCmdLine) from there as Fordy implied.
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  5. #5
    jasondoucette.com JasonD's Avatar
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    Thank you all for your replies. I had already known about __wargv, but I did not realize that __targv was defined as either __wargv or __argv depending on if it is a Unicode app or not. I had tested for the definition of UNICODE manually, and found that __wargv was an empty string in the case that it was... The problem is that I did not have the entry point of the app set to _tWinMain. It all works fine now. Information on this topic is rather difficult to find. Thank you for your help.

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