Visual c++

#include <windows.h> LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow) { HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style =CS_HREDRAW|CS_VREDRAW; wndclass.lpfnWndProc =WndProc; wndclass.cbClsExtra =0; wndclass.cbWndExtra =0; wndclass.hInstance =hInstance; wndclass.hIcon =LoadIcon(NULL,IDI_APPLICATION); wndclass.hCursor =LoadCursor(NULL,IDC_ARROW); wndclass.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName =NULL; wndclass.lpszClassName ="HelloWin"; if(!RegisterClass(&wndclass)) { MessageBox(NULL,"窗口注册失败！","HelloWin",0); return 0; } hwnd=CreateWindow("HelloWin","我的窗口",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL ,NULL,hInstance,NULL); ShowWindow(hwnd,nCmdShow); UpdateWindow(hwnd); while(GetMessage(&msg,NULL,0,0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam) { switch(message) { case WM_CREATE: return 0; case WM_LBUTTONDOWN: MessageBox(NULL,"你好，我的Visual C++世界！","问候",0); return 0; case WM_DESTROY: PostQuitMessage(0); return 0; } return DefWindowProc(hwnd,message,wParam,lParam); }