用C++加载音乐，位图并实现绘图功能

#include "windows.h" #include "resource.h" #include "deng.h" #include "mmsystem.h" #pragma comment(lib,"WINMM.LIB") LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); HDC hdcmem; HBITMAP hBm; BITMAP bm; HMENU hMenu,hAddMenu; deng draw; int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,LPSTR lpszCmdLine,int nCmdShow) { HWND hWnd; MSG Msg; static char lpszClassName[]="窗口"; char lpszTitle[]="黄旭窗口"; WNDCLASS WndClass; WndClass.cbClsExtra=0; WndClass.cbWndExtra=0; WndClass.hbrBackground=(HBRUSH)CreateSolidBrush(RGB(0,0,255)); WndClass.hCursor=LoadCursor(NULL,IDC_CROSS); WndClass.hIcon=LoadIcon(hInstance,MAKEINTRESOURCE(IDI_HUANG)); WndClass.hInstance=hInstance; WndClass.lpfnWndProc=WndProc; WndClass.lpszClassName=lpszClassName; WndClass.lpszMenuName=MAKEINTRESOURCE(IDR_HUANGMENU); WndClass.style=CS_DBLCLKS; if(!RegisterClass(&WndClass)) { MessageBeep(0); return FALSE; } hWnd=CreateWindow(lpszClassName,lpszTitle,WS_OVERLAPPEDWINDOW|WS_VSCROLL|WS_HSCROLL,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL); hBm=LoadBitmap(hInstance,MAKEINTRESOURCE(IDB_MYLOVE)); 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) { HDC hDC; RECT rect; GetClientRect(hWnd,&rect); int w=rect.right-rect.left; int h=rect.bottom-rect.top; PAINTSTRUCT ps; switch(message) { case WM_CREATE: hDC=GetDC(hWnd); hdcmem=CreateCompatibleDC(hDC); ReleaseDC(hWnd,hDC); sndPlaySound("234.wav",SND_ASYNC); break; case WM_PAINT: hDC=BeginPaint(hWnd,&ps); SelectObject(hdcmem,hBm); BitBlt(hDC,0,0,w,h,hdcmem,0,0,SRCCOPY); EndPaint(hWnd,&ps); break; case WM_COMMAND: hMenu=GetMenu(hWnd); hAddMenu=CreateMenu(); switch(LOWORD(wParam)) { case IDM_ADD: AppendMenu(hAddMenu,MF_ENABLED,IDM_CIRCLE,"圆(&C)"); InsertMenu(hMenu,1,MF_POPUP|MF_BYPOSITION,(UINT)hAddMenu,"绘图(&H)"); DrawMenuBar(hWnd); break; case IDM_WELCOME: MessageBox(hWnd,"欢迎使用本公司产品","温馨提示",MB_OK); break; case IDM_DELETE: DeleteMenu(hMenu,1,MF_BYPOSITION); DrawMenuBar(hWnd); break; case IDM_CIRCLE: hDC=GetDC(hWnd); draw.draw(hDC,hWnd); ReleaseDC(hWnd,hDC); break; default: break; } break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd,message,wParam,lParam); } return 0; }