//下面主要是消息循环，根普通程序不一样
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;
// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_DIRECTX, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_DIRECTX);
//初始化DirectDraw环境,并实现DirectDraw功能
if (FAILED(initDirectDraw(hInstance))){
MessageBox ( GetActiveWindow(), "初始化DirectDraw过程中出错!", "Error", MB_OK ) ;
FreeDraw() ;
DestroyWindow ( GetActiveWindow() ) ;
return FALSE ;
}
// Main message loop:
while (1)
{
if(PeekMessage(&msg,NULL,0,0,PM_NOREMOVE))
{
if(!GetMessage(&msg, NULL, 0, 0))
{
return msg.wParam ;
}
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
else if(g_bActive)
{
if(FAILED(MainLoop()))
{
FreeDraw();
MessageBox( GetActiveWindow(), TEXT("Displaying the next frame failed. ")
TEXT("The sample will now exit. "), TEXT("DirectDraw Sample"),
MB_ICONERROR | MB_OK );
PostQuitMessage(0);
}
}
else
WaitMessage();
}
return msg.wParam;
}
// FUNCTION: MyRegisterClass()
// PURPOSE: Registers the window class.
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_DIRECTX);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH )GetStockObject(BLACK_BRUSH);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);
return RegisterClassEx(&wcex);
}
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance; // Store instance handle in our global variable
hWnd = CreateWindow(szWindowClass, szTitle, WS_POPUP,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_ACTIVATEAPP:
g_bActive=wParam;
break;
case WM_KEYDOWN:
if(wParam == VK_ESCAPE)
{
PostQuitMessage(0);
return 0;
}
break;
case WM_DESTROY:
FreeDraw();
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
} |
