weitu.rar_visual c

#include<windows.h> #include<string.h> #include<stdlib.h> #include<stdio.h> LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); HDC hdc; HDC hdcmem; HBITMAP hBm; BITMAP bm; int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,LPSTR lpszCmdLine,int nCmdShow) { HWND hwnd; MSG Msg; WNDCLASS wndclass; char lpszClassName[]="位图"; char lpszTitle[]="Example_For_BitMap"; wndclass.style=0; 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=lpszClassName; if(!RegisterClass(&wndclass)) { MessageBeep(0); return FALSE; } hwnd=CreateWindow(lpszClassName, lpszTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); hBm=LoadBitmap(hInstance,"pic"); GetObject(hBm,sizeof(BITMAP),(LPVOID)&bm); 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) { PAINTSTRUCT ps; switch(message) {case WM_CREATE: hdc=GetDC(hwnd); //获取设备环境句柄 hdcmem=CreateCompatibleDC(hdc);//内存设备环境句柄 ReleaseDC(hwnd,hdc); //释放设备环境句柄 case WM_PAINT: hdc=BeginPaint(hwnd,&ps); SelectObject(hdcmem,hBm); //将位图选入内存设备环境 //将内存设备环境中的位图拷贝到设备环境中 BitBlt(hdc,180,80,bm.bmWidth,bm.bmHeight,hdcmem,0,0,SRCCOPY); EndPaint(hwnd,&ps); //释放设备环境句柄 break; case WM_DESTROY: DeleteObject(hBm); //释放位图 PostQuitMessage(0); break; default: return DefWindowProc(hwnd,message,wParam,lParam); } return 0; }