MFC中Console调试输出类

1：本类来源于CodeProject，本人稍加修改，使其使用更加方便。

2：使用步骤

    1：将该源文件加入到工程

    2：在代码任意处调用CConsole::Output("...")调用来输出调试信息。

　 3：请记得在程序的某处关闭控制台以释放资源 如：在App：ExitInstance中调用 CConsole::Close();

3：使用单例模式，_DEBUG选择编译。

 

附代码：

1 头文件：

#if !defined(__CONSOLE_H_) #define __CONSOLE_H_ #ifdef _DEBUG class CConsole { private: static CConsole * debug; private: CConsole() { hConsole = NULL; }; public: static CConsole * Instance(); // create the console bool Create(const char* szTitle, bool bNoClose = false); // set color for output void Color(WORD wColor = NULL); // write output to console static void Output(const char* szOutput = NULL, ...); // set and get title of console void SetTitle(const char* szTitle); char* GetTitle(); // get HWND and/or HANDLE of console HWND GetHWND(); HANDLE GetHandle(); // show/hide the console void Show(bool bShow = true); // disable the [x] button of the console void DisableClose(); // clear all output void Clear(); // close the console and delete it static void Close(); private: HANDLE hConsole; }; #endif #endif

2 源文件：

/* Author: Gregor S. E-Mail: foxhunter@hlla.net Date: 08/20/2002 Description: This class is a simple wrapper for some console functions. The main goal is to keep it that simple so that even beginners have no problems implementing it in their apps. You can write debug outout or anything else you wish into the console in different colors. Usage: Copy Console.cpp (this file) and Console.h into the directory of your application. Insert them into the workspace if you wish. Next, add the line '#include "Console.h"' into one of your source files and add a member variable of tyle CConsole. Copyright & disclaimer: Do want you want to do with this class: Modify it, extend it to your needs. Use it in both Freeware, Shareware or commercial applications, but make sure to leave these comments at the top of this source file intact and don't remove my name and E-mail address. */ #include "stdafx.h" #include "Console.h" #ifdef _DEBUG CConsole * CConsole::debug = NULL; // macro for the Clear() function #define ERR(bSuccess) { if(!bSuccess) return; } // macro to check whether hConsole is valid #define CHECK(hHandle) { if(hHandle == NULL) return; }; //CConsole* CConsole::debug = NULL; bool CConsole::Create(const char *szTitle, bool bNoClose) { // Has console been already created? if(hConsole != NULL) return false; // Allocate a new console for our app if(!AllocConsole()) return false; // Create the actual console hConsole = CreateFile("CONOUT$", GENERIC_WRITE|GENERIC_READ, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0); if(hConsole == INVALID_HANDLE_VALUE) return false; if(SetConsoleMode(hConsole, ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT ) == 0) return false; // if true, disable the [x] button of the console if(bNoClose) DisableClose(); // set the console title if(szTitle != NULL) SetConsoleTitle(szTitle); return true; } void CConsole::Color(WORD wColor) { CHECK(hConsole); // no color specified, reset to defaults (white font on black background) if(wColor != NULL) SetConsoleTextAttribute(hConsole, wColor ); // change font and/or background color else SetConsoleTextAttribute(hConsole, FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE); // white text on black bg } void CConsole::SetTitle(const char *title) { // self-explanatory SetConsoleTitle(title); } char* CConsole::GetTitle() { // get the title of our console and return it static char szWindowTitle[256] = ""; GetConsoleTitle(szWindowTitle,sizeof(szWindowTitle)); return szWindowTitle; } HWND CConsole::GetHWND() { if(hConsole == NULL) return NULL; // try to find our console window and return its HWND return FindWindow("ConsoleWindowClass",GetTitle()); } void CConsole::Show(bool bShow) { CHECK(hConsole); // get out console's HWND and show/hide the console HWND hWnd = GetHWND(); if(hWnd != NULL) ShowWindow(hWnd, SW_HIDE ? SW_SHOW : bShow); } void CConsole::DisableClose() { CHECK(hConsole); HWND hWnd = GetHWND(); // disable the [x] button if we found our console if(hWnd != NULL) { HMENU hMenu = GetSystemMenu(hWnd,0); if(hMenu != NULL) { DeleteMenu(hMenu, SC_CLOSE, MF_BYCOMMAND); DrawMenuBar(hWnd); } } } void CConsole::Clear() { CHECK(hConsole); /***************************************/ // This code is from one of Microsoft's // knowledge base articles, you can find it at // http://support.microsoft.com/default.aspx?scid=KB;EN-US;q99261& /***************************************/ COORD coordScreen = { 0, 0 }; BOOL bSuccess; DWORD cCharsWritten; CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ DWORD dwConSize; /* get the number of character cells in the current buffer */ bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi ); ERR(bSuccess); dwConSize = csbi.dwSize.X * csbi.dwSize.Y; /* fill the entire screen with blanks */ bSuccess = FillConsoleOutputCharacter( hConsole, (TCHAR) ' ', dwConSize, coordScreen, &cCharsWritten ); ERR(bSuccess); /* get the current text attribute */ bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi ); ERR(bSuccess); /* now set the buffer's attributes accordingly */ bSuccess = FillConsoleOutputAttribute( hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten ); ERR(bSuccess); /* put the cursor at (0, 0) */ bSuccess = SetConsoleCursorPosition( hConsole, coordScreen ); ERR(bSuccess); } HANDLE CConsole::GetHandle() { // simply return the handle to our console return hConsole; } void CConsole::Close() { // free the console, now it can't be used anymore until we Create() it again FreeConsole(); debug->hConsole = NULL; delete debug; debug = NULL; } void CConsole::Output(const char* szOutput, ...) { //单例模式，若控制台不存在，则创建一个控制台 if(!debug) { debug = new CConsole(); debug->Create("debug",true); } ASSERT(debug->hConsole); DWORD dwWritten; char out[256]; va_list va; // if not parameter set, write a new line if(szOutput == NULL) sprintf(out,"/n"); // process arguments else { va_start(va, szOutput); vsprintf(out, szOutput, va); va_end(va); } // write to the console WriteConsole(debug->hConsole,out,strlen(out),&dwWritten,0); } CConsole * CConsole::Instance() { //单例模式，通过该函数以调用其他类成员函数 if(!debug) { debug = new CConsole(); debug->Create("debug",true); } ASSERT(debug->hConsole); return debug; } #endif