（Visual C++）游戏开发笔记之十二：游戏输入消息处理（一）键盘消息处理 - windows编程基础

TOM MyRegisterClass(HINSTANCE hInstance);
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);

//初始化
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}

GetMessage(&msg,NULL,NULL,NULL); //初始化msg
//消息循环
while( msg.message!=WM_QUIT )
{
if( PeekMessage( &msg, NULL, 0,0 ,PM_REMOVE) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
else
{
tNow = GetTickCount();
if(tNow-tPre >= 40)
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*************************************

// 加载位图并设定各种初始值
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HBITMAP bmp;
hInst = hInstance;

hWnd = CreateWindow("canvas", "绘图窗口" , WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

if (!hWnd)
{
return FALSE;
}

MoveWindow(hWnd,10,10,640,480,true);
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);

hdc = GetDC(hWnd);
mdc = CreateCompatibleDC(hdc);
bufdc = CreateCompatibleDC(hdc);

//建立空的位图并置入mdc中
bmp = CreateCompatibleBitmap(hdc,640,480);
SelectObject(mdc,bmp);

//设定人物贴图初始位置和移动方向
x = 300;
y = 250;
dir = 0;
num = 0;

//载入各连续移动位图及背景图
girl[0] = (HBITMAP)LoadImage(NULL,"girl0.bmp",IMAGE_BITMAP,440,148,LR_LOADFROMFILE);
girl[1] = (HBITMAP)LoadImage(NULL,"girl1.bmp",IMAGE_BITMAP,424,154,LR_LOADFROMFILE);
girl[2] = (HBITMAP)LoadImage(NULL,"girl2.bmp",IMAGE_BITMAP,480,148,LR_LOADFROMFILE);
girl[3] = (HBITMAP)LoadImage(NULL,"girl3.bmp",IMAGE_BITMAP,480,148,LR_LOADFROMFILE);
bg = (HBITMAP)LoadImage(NULL,"bg.bmp",IMAGE_BITMAP,640,480,LR_LOADFROMFILE);

MyPaint(hdc);

return TRUE;
}

//****自定义绘图函数*********************************
// 人物贴图坐标修正及窗口贴图
void MyPaint(HDC hdc)
{
int w,h;

//先在mdc中贴上背景图
SelectObject(bufdc,bg);
BitBlt(mdc,0,0,640,480,bufdc,0,0,SRCCOPY);

//按照目前的移动方向取出对应人物的连续走动图，并确定截取人物图的宽度与高度
SelectObject(bufdc,girl[dir]);
switch(dir)
{
case 0:
w = 55;
h = 74;

（Visual C++）游戏开发笔记之十二：游戏输入消息处理（一）键盘消息处理 (二)