Win32程序（例如MFC、后台服务等）使用AllocConsole()添加调试用控制台

一、AllocConsole 函数

为调用进程分配一个新的控制台。

使用步骤：

1.　AllocConsole();//分配控制台

2.　HANDLE g_hOutput=GetStdHandle(STD_OUTPUT_HANDLE );//获取标准输出设备句柄

3.　WriteConsole(g_hOupput,lpBuffer,lpNumberofcharswritten,lpReserved);//写入字符串到控制台缓冲区

 

二、程序示例

#include <Windows.h> #include <stdio.h>   HINSTANCE g_hInstance = 0; HANDLE g_hOutput = 0;   void OnKeyDown( HWND hWnd, WPARAM wParam ) {          //将日志信息输出到控制台窗口中          CHAR szText[256] = { 0 };          sprintf( szText, "You Push Down Key:%c\n", wParam );          WriteConsole( g_hOutput, szText, strlen(szText), NULL, NULL ); }   LRESULT CALLBACK WndProc( HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam ) {          switch( nMsg )          {          case WM_KEYDOWN:                                      OnKeyDown( hWnd, wParam );                                      break;          case WM_DESTROY:                    PostQuitMessage( 0 );                    break;          }          return DefWindowProc( hWnd, nMsg, wParam, lParam ); }   int APIENTRY WinMain(HINSTANCE hInstance,                                                 HINSTANCE hPrevInstance,                                                 LPSTR     lpCmdLine,                                                 int     nCmdShow) {          g_hInstance = hInstance;            //创建一个控制台窗口          AllocConsole( );          g_hOutput = GetStdHandle( STD_OUTPUT_HANDLE );            //设置控制台窗口的属性          CHAR title[]="Output Debug Window";          SetConsoleTitle(title);          SetConsoleTextAttribute((HANDLE)g_hOutput,FOREGROUND_RED| FOREGROUND_GREEN| FOREGROUND_INTENSITY);//| FOREGROUND_BLUE );            //获取控制台窗口的句柄          HWND hwnd=NULL;          while(NULL==hwnd) hwnd=::FindWindow(NULL,(LPCTSTR)title);            //屏蔽掉控制台窗口的关闭按钮，以防窗口被误删除          HMENU hmenu = ::GetSystemMenu ( hwnd, FALSE );          DeleteMenu ( hmenu, SC_CLOSE, MF_BYCOMMAND );            WNDCLASSEX wce = { 0 };          wce.cbSize = sizeof( wce );          wce.cbClsExtra = 0;          wce.cbWndExtra = 0;          wce.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);          wce.hCursor = NULL;          wce.hIcon = NULL;          wce.hIconSm = NULL;          wce.hInstance = g_hInstance;          wce.lpfnWndProc = WndProc;          wce.lpszClassName = "Main";          wce.lpszMenuName = NULL;          wce.style = CS_HREDRAW | CS_VREDRAW;          ATOM nAtom = RegisterClassEx( &wce );          if( nAtom == 0 )          {                    MessageBox( NULL, "Failed to RegisterClass()", "Info", MB_OK );                    return 0;          }            HWND hWnd = CreateWindowEx( 0, "Main", "window",                    WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,                    CW_USEDEFAULT, CW_USEDEFAULT,                    CW_USEDEFAULT, NULL, NULL, g_hInstance,                    NULL );            ShowWindow( hWnd, SW_SHOW );          UpdateWindow( hWnd );            MSG nMsg = { 0 };          while( GetMessage( &nMsg, NULL, 0, 0 ) )          {                    TranslateMessage( &nMsg );                    DispatchMessage( &nMsg );          }            return 0; }

三、附带控制台的一些函数

        HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);

         //获取标准输出设备句柄

         CONSOLE_SCREEN_BUFFER_INFObInfo; // 窗口缓冲区信息

         GetConsoleScreenBufferInfo(hOut,& bInfo );

         //获取窗口缓冲区信息

         charstrTitle[255];

         GetConsoleTitle(strTitle,255); // 获取窗口标题

         //printf("当前窗口标题是：%s\n",strTitle);

         //_getch();

         SetConsoleTitle("变形实验");// 获取窗口标题

         //_getch();

         COORDsize = {1024, 1024};

         SetConsoleScreenBufferSize(hOut,size);// 重新设置缓冲区大小

         //_getch();

         SMALL_RECTrc = {0,0, 1024-1, 1024-1}; // 重置窗口位置和大小

         SetConsoleWindowInfo(hOut,true,&rc);

         COLORREFcolor = RGB(192,192,192);

         SetConsoleTextAttribute(hOut,FOREGROUND_INTENSITY| FOREGROUND_BLUE);