Windowsフォームプログラム開発基本プロセス

#include <windows.h>
#include <stdio.h>

//      ，     ，               ，CALLBACK  __stdcall      
LRESULT CALLBACK WinSunProc(
  HWND hwnd,      //     
  UINT uMsg,      //      
  WPARAM wParam,  //        
  LPARAM lParam   //        
);

 //WinMain       ，             
int WINAPI WinMain(        
  HINSTANCE hInstance,      //          
  HINSTANCE hPrevInstance,  //          
  LPSTR lpCmdLine,          // Cmd     
  int nCmdShow              //      ，     
)
{	
	//       
	WNDCLASS wndcls;
	wndcls.cbClsExtra=0;//      ，   0  
	wndcls.cbWndExtra=0;//       ，   0  
	wndcls.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);//      （    HGDIOBJ        ）
	wndcls.hCursor=LoadCursor(NULL,IDC_CROSS);//    
	wndcls.hIcon=LoadIcon(NULL,IDI_ERROR);//          
	wndcls.hInstance=hInstance;//             
	wndcls.lpfnWndProc=WinSunProc;//         
	wndcls.lpszClassName="Weixin2003";//       
	wndcls.lpszMenuName=NULL;//       
	wndcls.style=CS_HREDRAW | CS_VREDRAW;//                

	RegisterClass(&wndcls);//         

	HWND hwnd;
	//      ，         ，                 ，           
	hwnd=CreateWindow("Weixin2003","            ",WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);

	ShowWindow(hwnd,SW_SHOWNORMAL);//       

	UpdateWindow(hwnd);//    

	MSG msg;
	//    
	while(GetMessage(&msg,NULL,0,0))//      WM_QUIT,     ；     WM_QUIT，   
	{
		TranslateMessage(&msg);//    ，  WM_KEYDOWN WM_KEYUP     WM_CHAR  
		DispatchMessage(&msg);//    
	}
	return 0;
}

LRESULT CALLBACK WinSunProc(
  HWND hwnd,      //     
  UINT uMsg,      //      
  WPARAM wParam,  //        
  LPARAM lParam   //        
)
{
	switch(uMsg)//            
	{
	case WM_CHAR:
		char szChar[20];
		sprintf(szChar,"char is %d",wParam);
		MessageBox(hwnd,szChar,"weixin",0);
		break;
	case WM_LBUTTONDOWN:
		MessageBox(hwnd,"mouse clicked","weixin",0);
		HDC hdc;
		hdc=GetDC(hwnd);//GetDC ReleaseDC    
		TextOut(hdc,0,50,"         ",strlen("         "));
		ReleaseDC(hwnd,hdc);//   HDC，            
		break;
	case WM_PAINT://      
		/*    width height     （             ）       ，
		                   ，                  。
		BeginPaint EndPaint      ，                */
		HDC hDC;
		PAINTSTRUCT ps;
		hDC=BeginPaint(hwnd,&ps);
		TextOut(hDC,0,0,"    ",strlen("    "));
		EndPaint(hwnd,&ps);
		break;
	case WM_CLOSE:
		if(IDYES==MessageBox(hwnd,"      ？","weixin",MB_YESNO))
		{
			DestroyWindow(hwnd);//       WM_DESTROY  ，        
		}
		break;
	case WM_DESTROY:
		PostQuitMessage(0);//  WM_QUIT  ，      
		break;
	default:
		return DefWindowProc(hwnd,uMsg,wParam,lParam);//              ，      ，       
	}
	return 0;
}