#include<windows.h>
#include<stdio.h>
LRESULT CALLBACK WinSunProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);

int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow
)
{
//設計一個視窗類
WNDCLASS wndcls;
wndcls.cbClsExtra=0;
wndcls.cbWndExtra=0;
wndcls.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndcls.hCursor=LoadCursor(NULL,IDC_ARROW);
wndcls.hIcon=LoadIcon(NULL,IDI_ERROR);
wndcls.hInstance=hInstance;
wndcls.lpfnWndProc=WinSunProc;
wndcls.lpszClassName="flj設計的視窗類"; //視窗類的名稱
wndcls.lpszMenuName=NULL;
wndcls.style=CS_HREDRAW | CS_VREDRAW;
RegisterClass(&wndcls);

//建立視窗，定義一個變數用來保護成功建立視窗後返回的控制代碼
HWND hwnd;
hwnd=CreateWindow("flj設計的視窗類","flj建立的視窗",WS_OVERLAPPEDWINDOW,0,0,600,400,NULL,NULL,hInstance,NULL);

//顯示及重新整理視窗
ShowWindow(hwnd,SW_SHOWNORMAL);
UpdateWindow(hwnd);

//定義訊息結構體，開始訊息迴圈
MSG msg;
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;

}

//編寫視窗過程函式
LRESULT CALLBACK WinSunProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam, //第一個訊息引數
LPARAM lParam
)

{
switch(uMsg)
{
case WM_CHAR:
char szChar[20];
sprintf(szChar,"char code is %d",wParam);
MessageBox(hwnd,szChar,"char",0);
break;
case WM_PAINT:
HDC hDC;
PAINTSTRUCT ps;
hDC=BeginPaint(hwnd,&ps);
TextOut(hDC,200,150,"flj成功地輸出顯示文字資訊",strlen("flj成功地輸出顯示文字資訊"));
EndPaint(hwnd,&ps);
break;

case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0;
}