Windows編寫第一個程式注意：

 

VS200X的字元問題 

今天學著寫了一段C++程式，有一些問題，下面將問題與解決方案記錄如下：#include <windows.h> #include <stdio.h>LRESULT CALLBACK CallWindowProc( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam ); int WINAPI WinMain( HINSTANCE hInstance,     HINSTANCE hPrevInstance,     LPSTR lpCmdLine,     int nCmdShow ) { WNDCLASS wndcls; wndcls.cbClsExtra = 0; wndcls.cbWndExtra = 0; wndcls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); wndcls.hCursor = LoadCursor(NULL, IDC_ARROW); wndcls.hIcon = LoadIcon(NULL, IDI_APPLICATION); wndcls.hInstance = hInstance; wndcls.lpfnWndProc = CallWindowProc; wndcls.lpszClassName = "ZhengZhixin1983"; wndcls.lpszMenuName = NULL; wndcls.style = CS_HREDRAW | CS_VREDRAW; RegisterClass(&wndcls);HWND hwnd; hwnd = CreateWindow("ZhengZhixin1983","ZhengZhixin1983",WS_OVERLAPPEDWINDOW,    0,0,600,600,NULL,NULL,hInstance,NULL);ShowWindow(hwnd,SW_SHOWNORMAL); UpdateWindow(hwnd);MSG msg; while(GetMessage(&msg,NULL,0,0)) {    TranslateMessage(&msg);    DispatchMessage(&msg); }return 0; }LRESULT CALLBACK CallWindowProc( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam ) { switch(Msg) { case WM_CHAR:     char szChar[20];     sprintf(szChar,"Char is %d",wParam);     MessageBox(hWnd,szChar,"ZhengZhiXin1983",0);     break; case WM_LBUTTONDOWN:     MessageBox(hWnd,"Mouse Click","ZhengZhiXin1983",0);     HDC hdc;     hdc = GetDC(hWnd);     TextOut(hdc,0,50,"ZhengZhixin1983",strlen("ZhengZhixin1983"));     ReleaseDC(hWnd,hdc);     break; case WM_PAINT:     HDC hDC;     PAINTSTRUCT ps;     hDC = BeginPaint(hWnd,&ps);     TextOut(hdc,0,0,"ZhengZhiXin1983",strlen("ZhengZhiXin1983"));     EndPaint(hWnd,&ps);     break; case WM_CLOSE:     if(IDYES == MessageBox(hWnd,"是否退出？","ZhengZhiXin1983",MB_YESNO))      DestroyWindow(hWnd);     break; case WM_DESTROY:     PostQuitMessage(0);       break; default:     return DefWindowProc(hWnd,Msg,wParam,lParam);} return 0; }編譯後出現問題：d:\vc++_lesson1\winmain\winmain\winmain.cpp(28) : error C2440: '=' : cannot convert from 'const char [16]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast d:\vc++_lesson1\winmain\winmain\winmain.cpp(35) : error C2664: 'CreateWindowExW' : cannot convert parameter 2 from 'const char [16]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast d:\vc++_lesson1\winmain\winmain\winmain.cpp(63) : error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'char [20]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast d:\vc++_lesson1\winmain\winmain\winmain.cpp(66) : error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [12]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast d:\vc++_lesson1\winmain\winmain\winmain.cpp(69) : error C2664: 'TextOutW' : cannot convert parameter 4 from 'const char [16]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast d:\vc++_lesson1\winmain\winmain\winmain.cpp(76) : error C2664: 'TextOutW' : cannot convert parameter 4 from 'const char [16]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast d:\vc++_lesson1\winmain\winmain\winmain.cpp(80) : error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [11]' to 'LPCWSTR'         Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast基本都是字串無法轉換問題，並且添加強制轉換後，程式運行出現亂碼。解決方案：項目-->屬性-->配置屬性-->常規-->字元集-->使用多位元組字元集，並且不用加強制轉換。

另外一點就是：建立工程的時候應該建win32應用程式，而不是win32控制台程式，因為後者的入口函數是main函數，而win32應用程式的入口函數是WinMain函數。這就是win32應用程式和控制台程式的不同之處。