hellowin.c

windows程序设计源代码,windows程序设计这本书的原代码,总共23章,里面还有目录

/*------------------------------------------------------------
   HELLOWIN.C -- Displays "Hello, Windows 98!" in client area
                 (c) Charles Petzold, 1998
  ------------------------------------------------------------*/

#include <windows.h>

HWND p_hSetupButton      = NULL; //......handle for "Set" button



int p_nSetupButton[5]   = {
	400,
	400,
	100,
	30,
	WS_CHILDWINDOW| WS_VISIBLE | BS_PUSHBUTTON |BS_TEXT
};

const char  *cCaptionSet = "Set Time ";



LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
HWND CreateSetupButton(HWND hwnd, HWND *pSetupButton, const char* cClassName, const char*cCaption, int WinOpt[]);
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("HelloWin") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;

	 

     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 ;
     }
     
     hwnd = CreateWindow (szAppName,                  // window class name
                          TEXT ("The Hello Program"), // window caption
                          WS_OVERLAPPEDWINDOW,        // window style
                          CW_USEDEFAULT,              // initial x position
                          CW_USEDEFAULT,              // initial y position
                          CW_USEDEFAULT,              // initial x size
                          CW_USEDEFAULT,              // initial y size
                          NULL,                       // parent window handle
                          NULL,                       // window menu handle
                          hInstance,                  // program instance handle
                          NULL) ;                     // creation parameters
     
     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)
{
     HDC         hdc ;
     PAINTSTRUCT ps ;
     RECT        rect ;
	 HBRUSH       hBrush;
	 hBrush = CreateSolidBrush(RGB(128,255,255));
     
     switch (message)
     {
     case WM_CREATE:
 if (CreateSetupButton(hwnd, &p_hSetupButton, TEXT("BUTTON"), cCaptionSet, p_nSetupButton) == NULL)
		  {
			  return 0;
		  }
          
          return 0 ;
          
     case WM_PAINT:
          hdc = BeginPaint (hwnd, &ps) ;
          SelectObject(hdc,hBrush);
          GetClientRect (hwnd, &rect) ;
          
          DrawText (hdc, TEXT ("Hello, Windows 98!"), -1, &rect,
                    DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
          
          EndPaint (hwnd, &ps) ;
          return 0 ;
          
     case WM_DESTROY:
		  DeleteObject(hBrush);
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}

HWND CreateSetupButton(HWND hwnd, HWND *pSetupButton, const char * cClassName,const char * cCaption, int WinOpt[])
{
	if (pSetupButton[0] == NULL)
	{
	   	pSetupButton[0] = CreateWindow(
			cClassName,
			"你好",
			WinOpt[4],
			WinOpt[0],
			WinOpt[1],
			WinOpt[2],
			WinOpt[3],
			hwnd,
			NULL,
			NULL,
			NULL
			);
	}

	if (pSetupButton[0] != NULL)
	{
		ShowWindow(pSetupButton[0], SW_SHOW);
	}
	return pSetupButton[0];
}