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// firstwindow.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include <windows.h>
LRESULT CALLBACK WindowProc(HWND,UINT,WPARAM,LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{char szClassName[]="MainWClass";
WNDCLASSEX wndclass;
wndclass.cbSize=sizeof(wndclass);
wndclass.style=CS_HREDRAW ¦CS_VREDRAW;
wndclass.lpfnWndProc=WindowProc;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hInstance=hInstance;
wndclass.hIcon=::LoadIcon(NULL,IDI_APPLICATION);
wndclass.hCursor=::LoadCursor(NULL,IDC_ARROW);
wndclass.hbrBackground=(HBRUSH)::GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName=NULL;
wndclass.lpszClassName=szClassName;
wndclass.hIconSm=NULL;
::RegisterClassEx(&wndclass);
HWND hwnd=::CreateWindowEx(
WS_EX_ACCEPTFILES,
szClassName,
"My first Window!",
WS_OVERLAPPEDWINDOW ,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
if(hwnd==NULL)
{
::MessageBox(NULL,"创建窗口出错！","error",MB_OK);
return -1;}
::ShowWindow(hwnd,nCmdShow);
::UpdateWindow(hwnd);

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

LRESULT CALLBACK WindowProc(HWND,UINT,WPARAM,LPARAM){
char szText[]="最简单的窗口程序！";

switch(message)
{
case WM_PAINT:
{
HDC hdc;
PAINTSTRUCT ps;
hdc = ::BeginPaint(hwnd,&ps);
::TextOut(hdc,10,10,szText,strlen(szText));
::EndPaint(hwnd,&ps);
return 0;}
case WM_DESTROY:
::PostQuitMessage(0);
return 0;
}
return ::DefWindowProc(hwnd,message,wParam,lParam);
}


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