how to view printf output in win32 app on visual studio 2010?

最新推荐文章于 2024-08-11 00:34:08 发布

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本文详细介绍了如何使用C++在Windows环境下将程序输出定向至调试窗口，包括实现步骤、代码示例及注意事项。通过将程序输出重定向到调试窗口，开发者可以在不依赖外部工具的情况下直接查看程序运行时的信息。

#include <windows.h>
#include <stdio.h>

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdShow, int nCmdShow)
{
    int number = 10;

    char str[256];

    sprintf_s(str, "It works! - number: %d \n", number);

    OutputDebugString(str);

    return 0;
}

void SetStdOutToNewConsole()
{
  int hConHandle;
  long lStdHandle;
  FILE *fp;

  // allocate a console for this app
  AllocConsole();

  // redirect unbuffered STDOUT to the console
  lStdHandle = (long)GetStdHandle(STD_OUTPUT_HANDLE);
  hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
  fp = _fdopen( hConHandle, "w" );
  *stdout = *fp;

  setvbuf( stdout, NULL, _IONBF, 0 );
}
void SetStdOutToNewConsole()
{
    // allocate a console for this app
    AllocConsole();

    // redirect unbuffered STDOUT to the console
    HANDLE consoleHandle = GetStdHandle(STD_OUTPUT_HANDLE);
    int fileDescriptor = _open_osfhandle((intptr_t)consoleHandle, _O_TEXT);
    FILE *fp = _fdopen( fileDescriptor, "w" );
    *stdout = *fp;
    setvbuf( stdout, NULL, _IONBF, 0 );

    // give the console window a nicer title
    SetConsoleTitle(L"Debug Output");

    // give the console window a bigger buffer size
    CONSOLE_SCREEN_BUFFER_INFO csbi;
    if ( GetConsoleScreenBufferInfo(consoleHandle, &csbi) )
    {
        COORD bufferSize;
        bufferSize.X = csbi.dwSize.X;
        bufferSize.Y = 9999;
        SetConsoleScreenBufferSize(consoleHandle, bufferSize);
    }
}
http://stackoverflow.com/questions/3009042/how-to-view-printf-output-in-win32-app-on-visual-studio-2010