ance);
BOOL InitInstance
(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM,
LPARAM);
void MyPaint(HDC hdc);
//***WinMain函数，程序入口点函数**************************************
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MSG msg;
MyRegisterClass(hInstance);
//运行初始化函数
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}[cpp]
GetMessage(&msg,NULL,NULL,NULL); //感谢xiaoxiangp的提醒，需要在进入消息循环之前初始化msg，避免了死循环发生的可能性。
//游戏循环
while( msg.message!=WM_QUIT )
{
if( PeekMessage( &msg, NULL, 0,0 ,PM_REMOVE) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
else
{
tNow = GetTickCount();
if(tNow-tPre >= 100) //当此次循环运行与上次绘图时间相差0.1秒时再进行重绘操作
MyPaint(hdc);
}
}
return msg.wParam;
}
//****设计一个窗口类，类似填空题，使用窗口结构体*************************
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 = NULL;
wcex.hCursor = NULL;
wcex.hCursor = LoadCursor(NULL,
IDC_ARROW);
wcex.hbrBackground = (HBRUSH)
(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = "canvas";
wcex.hIconSm = NULL;
return RegisterClassEx(&wcex);
}
//****初始化函数*************************************
// 从文件加载位图
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
char filename[20] = "";
int i;
hInst = hInstance;
hWnd = CreateWindow("canvas", "动画演示" ,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0,
NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
MoveWindow(hWnd,10,10,600,450,true);
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
hdc = GetDC(hWnd);
mdc = CreateCompatibleDC(hdc);
//载入各个人物位图
for(i=0;i<7;i++)
{
sprintf(filename,"man%d.bmp",i);
man[i] = (HBITMAP)LoadImage
(NULL,filename,IMAGE_BITMAP,640,480,LR_LOADFROMFILE);
}
num = 0;
frame = 0;
MyPaint(hdc);
return TRUE;
}
//****自定义绘图函数*********************************
// 1.计算与显示每秒画面更新次数
// 2.按照图号顺序进行窗口贴图
void MyPaint(HDC hdc)
{
char str[40] = "";
if(num == 7)
num = 0;
frame++; //画面更新次数加1
if(tNow - tCheck >= 1000) //判断此次绘图时间由前一秒算起是否已经达到1秒钟的时间间隔。若是，则将目前的'frame'值赋给"fps"，表示这一秒内所更新的画面次数，然后将“frame”值回0，并重设下次计算每秒画面数的起始时间"iCheck"。
{
fps = frame;
frame = 0;
tCheck = tNow;
}
SelectObject(mdc,man[num]); //选用要更新的图案到mdc中，再输出显示每秒画面更新次数的字符串到mdc上，最后将mdc的内容贴到窗口中。
sprintf(str,"每秒显示 %d个画面",fps);
TextOut(mdc,0,0,str,strlen(str));
BitBlt(hdc,0,0,600,450,mdc,0,0,SRCCOPY);
tPre = GetTickCount(); //记录此次绘图时间，供下次游戏循环中判断是否已经达到画面更新操作设定的时间间隔。
num++;
}
//******消息处理函数*********************************
LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
int i;
switch (message)
{
case WM_DESTROY: //窗口结束消息
DeleteDC(mdc);
for(i=0;i<7;i++)
DeleteObject(man[i]);
ReleaseDC(hWnd,hdc);
PostQuitMessage(0);
break;
default: //其他消息
return DefWindowProc(hWnd,
message, wParam, lParam);
}
return 0;
}
GetMessage(&msg,NULL,NULL,NULL); //感谢xiaoxiang |