CODEWITHSUNDEEP
c++visual-studio
user0000001
user0000001

Reputation: 2233

Using tprintf for TCHAR argv[0] and getting question marks

It's been awhile (10+ years) since I've developed in C++. I am trying to accept a value via command line and pass it along to a class constructor.

#include "stdafx.h"

#ifdef _WIN32
    #include <windows.h>
    #include "WinFolderMonitor.h"
#elif __APPLE__
#elif __linux__
#elif __unix__
#endif

int main(int argc, TCHAR *argv[])
{
    if (argc != 2)
    {
        _tprintf(TEXT("Usage: %s <dir>\n"), argv[0]);
        return 0;
    }

#ifdef _WIN32
    WinFolderMonitor* folderMonitor = new WinFolderMonitor(argv[1]);
#endif

    folderMonitor->WatchDirectory();

    return 0;
}

However, the output I am getting is not as expected. Rather, I am receiving a bunch of question marks, which I would normally attribute to some encoding issue but I believe that I've set up the project correctly to mitigate that.

C:\SVN\monitor.exe
Usage: ?????????e????? <dir>

From my understanding, I should be seeing the application filename. But I am getting a whole bunch of question marks. I have setup my project to use "Unicode" within Visual Studio.

Upvotes: 1

Views: 1406

Answers (1)

Barmak Shemirani
Barmak Shemirani

Reputation: 31619

Use _tmain instead main. If UNICODE is defined, _tmain becomes a macro for wmain(int argc, wchar_t* argv[])

See also msdn:main

int _tmain(int argc, TCHAR *argv[])
{
    if (argc != 2)
    {
        _tprintf(TEXT("Usage: %s <dir>\n"), argv[0]);
        return 0;
    }

    return 0;
}

This is usually for homework purposes. There is no point to make this ANSI compatible unless you are also targeting Windows 98. Otherwise you can use UNICODE only version, for example const wchar_t *text = L"text"; etc.

Upvotes: 3

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