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Instance(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);
//初始化
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
//消息循环
GetMessage(&msg,NULL,NULL,NULL); //初始化msg
while( msg.message!=WM_QUIT )
{
if( PeekMessage( &msg, NULL, 0,0 ,PM_REMOVE) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
else
{
tNow = GetTickCount();
if(tNow-tPre >= 50)
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 = "maple";
wcex.hIconSm = NULL;
return RegisterClassEx(&wcex);
}
//****初始化函数*************************************
// 1.加载位图资源
// 2.取得内部窗口区域信息
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HBITMAP bmp;
hInst = hInstance;
hWnd = CreateWindow("maple", "浅墨的窗口" , WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
MoveWindow(hWnd,10,10,750,420,true);
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
hdc = GetDC(hWnd);
mdc = CreateCompatibleDC(hdc);
bufdc = CreateCompatibleDC(hdc);
bmp = CreateCompatibleBitmap(hdc,750,400);
SelectObject(mdc,bmp);
bg = (HBITMAP)LoadImage(NULL,"bg.bmp",IMAGE_BITMAP,750,400,LR_LOADFROMFILE);
angrybird = (HBITMAP)LoadImage(NULL,"angrybird.bmp",IMAGE_BITMAP,140,70,LR_LOADFROMFILE);
GetClientRect(hWnd,&rect);
MyPaint(hdc);
return TRUE;
}
//****自定义绘图函数*********************************
// 1.窗口贴图
// 2.根据小球的运动状态计算速度与贴图坐标
void MyPaint(HDC hdc)
{
SelectObject(bufdc,bg);
BitBlt(mdc,0,0,750,400,bufdc,0,0,SRCCOPY);
SelectObject(bufdc,angrybird);
BitBlt(mdc,x,y,70,70,bufdc,70,0,SRCAND);
BitBlt(mdc,x,y,70,70,bufdc,0,0,SRCPAINT);
BitBlt(hdc,0,0,750,400,mdc,0,0,SRCCOPY);
x += vx; //计算X轴方向贴图坐标，每调用一次MyPiant（），x坐标就加上一个vx的当前值
vy = vy + gy; //计算Y轴方向速度分量，vy随着每一次MyPiant（）函数的调用就加上一个gy（重力加速度）
y += vy; //计算Y轴方向贴图坐标，每调用一次MyPiant（），y坐标就加上一个刚改变过后的vy，相当于加速运动
if(y >= rect.bottom-70) //判断是否触地，如果触碰到窗口边界，进行调整
{
y = rect.bottom - 70;
//X轴方向的摩擦力处理
vx += fx; // vx=fx+vx；这里fx为负 |