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Annotation of pmsdk/samples/petzold/chap09/loadbmp1.c, revision 1.1.1.1

1.1       root        1: /*----------------------------------------------------
                      2:    LOADBMP1.C -- Loads a Bitmap Resource and Draws it
                      3:   ----------------------------------------------------*/
                      4: 
                      5: #define INCL_WIN
                      6: #define INCL_GPI
                      7: 
                      8: #include <os2.h>
                      9: #include <stddef.h>
                     10: #include "loadbmp.h"
                     11: 
                     12: MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;
                     13: 
                     14: int main (void)
                     15:      {
                     16:      static CHAR szClientClass [] = "LoadBmp1" ;
                     17:      HAB         hab ;
                     18:      HMQ         hmq ;
                     19:      HWND        hwndFrame, hwndClient ;
                     20:      QMSG        qmsg ;
                     21:      ULONG       flFrameFlags = FCF_STANDARD & ~FCF_MENU ;
                     22:      ULONG       flFrameStyle = WS_VISIBLE ;
                     23: 
                     24:      hab = WinInitialize (0) ;
                     25:      hmq = WinCreateMsgQueue (hab, 0) ;
                     26: 
                     27:      WinRegisterClass (hab, szClientClass, ClientWndProc, CS_SIZEREDRAW, 0) ;
                     28: 
                     29:      hwndFrame = WinCreateStdWindow (HWND_DESKTOP, flFrameStyle,
                     30:                                      &flFrameFlags, szClientClass,
                     31:                                      "Load and Draw a Bitmap",
                     32:                                      0L, NULL, 0, &hwndClient) ;
                     33: 
                     34:      while (WinGetMsg (hab, &qmsg, NULL, 0, 0))
                     35:           WinDispatchMsg (hab, &qmsg) ;
                     36: 
                     37:      WinDestroyWindow (hwndFrame) ;
                     38:      WinDestroyMsgQueue (hmq) ;
                     39:      WinTerminate (hab) ;
                     40: 
                     41:      return 0 ;
                     42:      }
                     43: 
                     44: MRESULT EXPENTRY ClientWndProc (HWND hwnd, USHORT msg, MPARAM mp1, MPARAM mp2)
                     45:      {
                     46:      static SHORT cxClient, cyClient ;
                     47:      HBITMAP      hbm ;
                     48:      HPS          hps ;
                     49:      POINTL       ptl ;
                     50: 
                     51:      switch (msg)
                     52:           {
                     53:           case WM_SIZE:
                     54:                cxClient = SHORT1FROMMP (mp2) ;
                     55:                cyClient = SHORT2FROMMP (mp2) ;
                     56:                return 0 ;
                     57: 
                     58:           case WM_PAINT:
                     59:                hps = WinBeginPaint (hwnd, NULL, NULL) ;
                     60: 
                     61:                hbm = GpiLoadBitmap (hps, NULL, IDB_HELLO,
                     62:                                     (LONG) cxClient, (LONG) cyClient) ;
                     63:                if (hbm)
                     64:                     {
                     65:                     ptl.x = 0 ;
                     66:                     ptl.y = 0 ;
                     67: 
                     68:                     WinDrawBitmap (hps, hbm, NULL, &ptl,
                     69:                                    CLR_NEUTRAL, CLR_BACKGROUND, DBM_NORMAL) ;
                     70: 
                     71:                     GpiDeleteBitmap (hbm) ;               
                     72:                     }
                     73:                WinEndPaint (hps) ;
                     74:                return 0 ;
                     75:           }
                     76:      return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
                     77:      }

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