C语言是一门通用计算机编程语言，应用广泛。C语言的设计目标是提供一种能以简易的方式编译、处理低级存储器、产生少量的机器码以及不需要任何运行环境支360问答持便能运行的编程语言。
尽管C语言提供了许逐针组触劳西多低级处理的功能，但仍然保持着良好跨平台的特性，以一个标准规格写出的C语言程序可在许多电脑平台上进行编译，甚至包含一些嵌入式处理器（单片机或称MCU）以及超级电脑等作业平台。
#inclu况配乱可de

//Function prototype.
int WINAPI 官激凯友情请型迫WinMain(HINSTANCE,HINSTAN强治打打士剧差包间错待CE ,LPSTR ,int);
LRESULT CALLBACK MainWndProc(HWND ,UINT ,WPARAM,LPARAM);

InitApplication(HIN局错介危火比早STANCE);
InitInstance(HINSTANCE取块十考普动,int);

LRESULT CALLBACK 氢垂刑终各贵补MainWndProc(HWND hwnd,UINT nMsg,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
RECT rect;

switch(nMsg)
{
case WM_COMMAND:
{
hdc = GetDC((HWND)lParam);
GetClientRect ((HWND)lParam, &rect) ;
DrawText(hdc,"HOHO",-1,&rect,
DT_SINGLELINE | DT_CENTER | DT_VCENTER检节声帮希克否续古眼组);
ReleaseDC((HWND)lParam,hdc);
}
break;
case WM_PAINT:
{
hdc = BeginPaint(hwnd,&ps);
GetClientRect (hwnd, &rect) ;
DrawText(hdc,"Hello Word",-1,&rect,
DT_SINGLELINE | DT_CENTER | DT_VCENTER);
EndPaint(hwnd,&ps);
}
break;
//按键
case WM_KEYDOWN:

if(wParam == VK_ESCAPE)
SendMessage(hwnd,WM_CLOSE,0,0);

break;
case WM_CHAR:
switch(wParam)
{
case 'w':
MessageBox(hwnd,"UP","KeyBorad Input",MB_OK);
break;
case 's':
MessageBox(hwnd,"DOWN","KeyBorad Input",MB_OK);
break;
case 'a':
MessageBox(hwnd,"LEFT","KeyBorad Input",MB_OK);
break;
case 'd':
MessageBox(hwnd,"RIGHT","KeyBorad Input",MB_OK);
break;
}
break;

//关闭
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;

default:
return DefWindowProc(hwnd,nMsg,wParam,lParam);
}
return 0;
}

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPreInStance,
LPSTR lpCmdLine,int nCmdShow)
{
MSG msg;

if(!InitApplication(hInstance))
{
MessageBox(NULL,"InitApplication Failed","Error!",MB_ICONEXCLAMATION | MB_OK);
return FALSE;
}
if(!InitInstance(hInstance,nCmdShow)){
MessageBox(NULL,"InitInstance Failed","Error!",MB_ICONEXCLAMATION | MB_OK);
return FALSE;
}

while(GetMessage(&msg,(HWND) NULL,0,0)>0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}

InitApplication(HINSTANCE hInstance)
{
WNDCLASS wc;

***.style = CS_DBLCLKS;
wc.lpfnWndProc = MainWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL,IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = "MainWClass";
return RegisterClass(&wc);
}

InitInstance(HINSTANCE hInstance,int nCmdShow){
HWND hwnd;
HWND hwndCloseButton;
hwnd = CreateWindow(
"MainWClass",
"Sample",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
(HWND)NULL,
(HMENU)NULL,
hInstance,
(LPVOID)NULL);

if(!hwnd)
return FALSE;

hwndCloseButton = CreateWindow(
"BUTTON",
"CLOSE",
WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON,
100,
100,
100,
80,
hwnd,
(HMENU)NULL,
hInstance,
(LPVOID)NULL);

if(!hwndCloseButton)
return FALSE;

ShowWindow(hwnd,nCmdShow);
UpdateWindow(hwnd);
return TRUE;
}