helloworld.c

C#一个实例源代码

/*-----------------------------------------------------------------------------------------------------------
  HelloWorld.c
------------------------------------------------------------------------------------------------------------*/

#include <windows.h>
#include"resource.h"

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("HelloWorld") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;
	 HMENU        hMenu;

     wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc   = WndProc ;
     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 = szAppName ;

     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("This program requires Windows NT!"), 
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
	 hMenu=LoadMenu(hInstance,szAppName );
     
     hwnd = CreateWindow (
		                   szAppName,                 
                          TEXT ("Hello World!"),  
                          WS_OVERLAPPEDWINDOW
                          |WS_HSCROLL|WS_VSCROLL,
     
                          CW_USEDEFAULT,               
                          CW_USEDEFAULT,             
                          CW_USEDEFAULT,              
                          CW_USEDEFAULT,               
                          NULL,                       
                          hMenu,                       
                          hInstance,                  
                          NULL) ;                     
     
     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;
     
     while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
         
     switch (message)
     {
	 case WM_COMMAND:
		 switch(LOWORD(wParam))
		 {
		 case IDM_FILE_MINIMIZE:
			 CloseWindow(hwnd);
			 return 0;
		 case IDM_FILE_EXIT:
			 DestroyWindow(hwnd);
			 return 0;
		 }	
		 break;
              
     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}