最簡Windows編程

#include <stdio.h>   int main()
{       printfss("Hello world\n");       return 0;   }

無數人知道這段代碼,而知道下面的代碼的人數比上面的要稍少了一些.

#include <windows.h>

int main()

{

MessageBox(NULL,"Hello World","window",MB_OK);

return 0;

}

這兩段代碼運行後都會顯示dos視窗,下面的代碼將把你真正帶入windows環境,就沒有dos視窗什麼事了。

#include <windows.h>

int WINAPI WinMain(HINSTANCE hins,HINSTANCE preHins,LPSTR cmd,int show)

{

MessageBox(NULL,"Hello World","window",MB_OK);

return 0;
}
 

這樣，你就編寫了一個最簡單的windows程式,但只有一個訊息框，還沒有真正意義上的視窗。

#include <windows.h>

//訊息處理函數
 LRESULT CALLBACK WinPorc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam);

int WINAPI WinMain(HINSTANCE hins,HINSTANCE phins,LPSTR cmd,int show)
 {
 HWND hwnd;
 MSG msg;
 WNDCLASS wnd;

ZeroMemory(&wnd,sizeof(WNDCLASS));
 wnd.hbrBackground = (HBRUSH)::GetStockObject(DKGRAY_BRUSH);
 wnd.hInstance = hins;
 wnd.lpfnWndProc = WinPorc;
 wnd.lpszClassName="test";
 wnd.style = CS_VREDRAW|CS_HREDRAW;

if(!::RegisterClass(&wnd))
 {
  return 0;
 }

hwnd = ::CreateWindow("test","test",WS_OVERLAPPED|WS_SYSMENU,0,0,100,100,NULL,NULL,hins,NULL);
 if(hwnd==NULL)
 {
  return 0;
 }
 
 ShowWindow(hwnd,show);
 UpdateWindow(hwnd);
 
 while(TRUE){
  if(::PeekMessage(&msg,NULL,0,0,PM_REMOVE)){
   if(msg.message == WM_QUIT){
    break;
   }  
  ::TranslateMessage(&msg);
  ::DispatchMessage(&msg);
  }
 }
    return 0;
}

LRESULT CALLBACK WinPorc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
 switch(msg){
   case WM_DESTROY:
       PostQuitMessage(0);
    break;
   default:
    break;
 }
 return ::DefWindowProc(hwnd,msg,wParam,lParam);
}