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Microsoft OS/2 SDK PM 08-08-1988

/*----------------------------------------------------
   LOADBMP2.C -- Loads a Bitmap Resource and Draws it
  ----------------------------------------------------*/

#define INCL_WIN
#define INCL_GPI

#include <os2.h>
#include <stddef.h>
#include "loadbmp.h"

MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;

int main (void)
     {
     static CHAR szClientClass [] = "LoadBmp2" ;
     HAB         hab ;
     HMQ         hmq ;
     HWND        hwndFrame, hwndClient ;
     QMSG        qmsg ;
     ULONG       flFrameFlags = FCF_STANDARD & ~FCF_MENU ;
     ULONG       flFrameStyle = WS_VISIBLE ;

     hab = WinInitialize (0) ;
     hmq = WinCreateMsgQueue (hab, 0) ;

     WinRegisterClass (hab, szClientClass, ClientWndProc, CS_SIZEREDRAW, 0) ;

     hwndFrame = WinCreateStdWindow (HWND_DESKTOP, flFrameStyle,
                                     &flFrameFlags, szClientClass,
                                     "Load and Draw a Bitmap",
                                     0L, NULL, 0, &hwndClient) ;

     while (WinGetMsg (hab, &qmsg, NULL, 0, 0))
          WinDispatchMsg (hab, &qmsg) ;

     WinDestroyWindow (hwndFrame) ;
     WinDestroyMsgQueue (hmq) ;
     WinTerminate (hab) ;

     return 0 ;
     }

MRESULT EXPENTRY ClientWndProc (HWND hwnd, USHORT msg, MPARAM mp1, MPARAM mp2)
     {
     static HBITMAP hbm ;
     HPS            hps ;
     RECTL          rcl ;

     switch (msg)
          {
          case WM_CREATE:
               hps = WinGetPS (hwnd) ;
               hbm = GpiLoadBitmap (hps, NULL, IDB_HELLO, 0L, 0L) ;
               WinReleasePS (hps) ;
               return 0 ;

          case WM_PAINT:
               hps = WinBeginPaint (hwnd, NULL, NULL) ;

               WinQueryWindowRect (hwnd, &rcl) ;

               if (hbm)
                    WinDrawBitmap (hps, hbm, NULL, (PPOINTL) &rcl,
                                   CLR_NEUTRAL, CLR_BACKGROUND, DBM_STRETCH) ;

               WinEndPaint (hps) ;
               return 0 ;

          case WM_DESTROY:
               if (hbm)
                    GpiDeleteBitmap (hbm) ;               
               return 0 ;
          }
     return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
     }

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