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标题: 给非MFC, 非Console 的VC程序增加打印的方法(用于ucGUISimulator) [打印本页]

作者: 张衍波 时间: 2015-5-20 08:33
标题: 给非MFC, 非Console 的VC程序增加打印的方法(用于ucGUISimulator)
emWin Simulator/ucGUI Simulator 是一个非MFC的应用程序，所以传统的用于MFC应用的打印手段(TRACE/DebugOutputString), 控制台的打印手段(printf/TRACE/DebugOutputString) 都不可用，给软件调试代码了不少的麻烦。

以下是一个解决方法：

新建一个 ConsoleWindow.cpp 文件，代码的内容如下：
#include <windows.h>
#include <stdio.h>
#include <fcntl.h>
#include <io.h>
#include <iostream>
#include <fstream>

using namespace std;

// maximum mumber of lines the output console should have
static const WORD MAX_CONSOLE_LINES = 500;

class ConsoleWindow
{
public:
      ConsoleWindow::ConsoleWindow(void)
      {
            int hConHandle;
            long lStdHandle;
            CONSOLE_SCREEN_BUFFER_INFO coninfo;
            FILE *fp;

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

            // set the screen buffer to be big enough to let us scroll text
            GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE),&coninfo);
            coninfo.dwSize.Y = MAX_CONSOLE_LINES;
            SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE),coninfo.dwSize);

            // 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 );

            // redirect unbuffered STDIN to the console

            lStdHandle = (long)GetStdHandle(STD_INPUT_HANDLE);
            hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);

            fp = _fdopen( hConHandle, "r" );
            *stdin = *fp;
            setvbuf( stdin, NULL, _IONBF, 0 );

            // redirect unbuffered STDERR to the console
            lStdHandle = (long)GetStdHandle(STD_ERROR_HANDLE);
            hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);

            fp = _fdopen( hConHandle, "w" );

            *stderr = *fp;

            setvbuf( stderr, NULL, _IONBF, 0 );
      }
};

ConsoleWindow console;
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