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C/C++ Source or Header  |  1989-01-09  |  4.2 KB  |  117 lines
  1. /*------------------------------
  2.    LINETYPE.C -- GPI Line Types
  3.   ------------------------------*/
  4.  
  5. #define INCL_WIN
  6. #define INCL_GPI
  7. #include <os2.h>
  8. #include <string.h>
  9.  
  10. MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;
  11.  
  12. int main (void)
  13.      {
  14.      static CHAR  szClientClass [] = "LineType" ;
  15.      static ULONG flFrameFlags = FCF_TITLEBAR      | FCF_SYSMENU |
  16.                                  FCF_SIZEBORDER    | FCF_MINMAX  |
  17.                                  FCF_SHELLPOSITION | FCF_TASKLIST ;
  18.      HAB          hab ;
  19.      HMQ          hmq ;
  20.      HWND         hwndFrame, hwndClient ;
  21.      QMSG         qmsg ;
  22.  
  23.      hab = WinInitialize (0) ;
  24.      hmq = WinCreateMsgQueue (hab, 0) ;
  25.  
  26.      WinRegisterClass (hab, szClientClass, ClientWndProc, CS_SIZEREDRAW, 0) ;
  27.  
  28.      hwndFrame = WinCreateStdWindow (HWND_DESKTOP, WS_VISIBLE,
  29.                                      &flFrameFlags, szClientClass, NULL,
  30.                                      0L, NULL, 0, &hwndClient) ;
  31.  
  32.      WinSendMsg (hwndFrame, WM_SETICON,
  33.                  WinQuerySysPointer (HWND_DESKTOP, SPTR_APPICON, FALSE),
  34.                  NULL) ;
  35.  
  36.      while (WinGetMsg (hab, &qmsg, NULL, 0, 0))
  37.           WinDispatchMsg (hab, &qmsg) ;
  38.  
  39.      WinDestroyWindow (hwndFrame) ;
  40.      WinDestroyMsgQueue (hmq) ;
  41.      WinTerminate (hab) ;
  42.      return 0 ;
  43.      }
  44.  
  45. MRESULT EXPENTRY ClientWndProc (HWND hwnd, USHORT msg, MPARAM mp1, MPARAM mp2)
  46.      {
  47.      static struct {
  48.                    LONG lLineType ;
  49.                    CHAR *szLineType ;
  50.                    }
  51.                    show [] = 
  52.                    {
  53.                    LINETYPE_DEFAULT       , "LINETYPE_DEFAULT"       , 
  54.                    LINETYPE_DOT           , "LINETYPE_DOT"           , 
  55.                    LINETYPE_SHORTDASH     , "LINETYPE_SHORTDASH"     , 
  56.                    LINETYPE_DASHDOT       , "LINETYPE_DASHDOT"       , 
  57.                    LINETYPE_DOUBLEDOT     , "LINETYPE_DOUBLEDOT"     , 
  58.                    LINETYPE_LONGDASH      , "LINETYPE_LONGDASH"      , 
  59.                    LINETYPE_DASHDOUBLEDOT , "LINETYPE_DASHDOUBLEDOT" , 
  60.                    LINETYPE_SOLID         , "LINETYPE_SOLID"         , 
  61.                    LINETYPE_INVISIBLE     , "LINETYPE_INVISIBLE"     , 
  62.                    LINETYPE_ALTERNATE     , "LINETYPE_ALTERNATE"
  63.                    } ;
  64.      static SHORT  cxClient, cyClient, cxCaps, cyChar, cyDesc,
  65.                    sNumTypes = sizeof show / sizeof show[0] ;
  66.      FONTMETRICS   fm ;
  67.      HPS           hps ;
  68.      POINTL        ptl ;
  69.      SHORT         sIndex ;
  70.  
  71.      switch (msg)
  72.           {
  73.           case WM_CREATE:
  74.                hps = WinGetPS (hwnd) ;
  75.                GpiQueryFontMetrics (hps, (LONG) sizeof fm, &fm) ;
  76.                cxCaps = (SHORT) fm.lEmInc ;
  77.                cyChar = (SHORT) fm.lMaxBaselineExt ;
  78.                cyDesc = (SHORT) fm.lMaxDescender ;
  79.                WinReleasePS (hps) ;
  80.                return 0 ;
  81.  
  82.           case WM_SIZE:
  83.                cxClient = SHORT1FROMMP (mp2) ;
  84.                cyClient = SHORT2FROMMP (mp2) ;
  85.                return 0 ;
  86.  
  87.           case WM_PAINT:
  88.                hps = WinBeginPaint (hwnd, NULL, NULL) ;
  89.                GpiErase (hps) ;
  90.  
  91.                for (sIndex = 0 ; sIndex < sNumTypes ; sIndex ++)
  92.                     {
  93.                     GpiSetLineType (hps, show [sIndex].lLineType) ;
  94.  
  95.                     ptl.x = cxCaps ;
  96.                     ptl.y = cyClient - 2 * (sIndex + 1) * cyChar + cyDesc ;
  97.  
  98.                     GpiCharStringAt (hps, &ptl,
  99.                                      (LONG) strlen (show [sIndex].szLineType),
  100.                                      show [sIndex].szLineType) ;
  101.  
  102.                     if (cxClient > 25 * cxCaps)
  103.                          {
  104.                          ptl.x = 24 * cxCaps ;
  105.                          ptl.y += cyChar / 2 - cyDesc ;
  106.                          GpiMove (hps, &ptl) ;
  107.  
  108.                          ptl.x = cxClient - cxCaps ;
  109.                          GpiLine (hps, &ptl) ;
  110.                          }
  111.                     }
  112.                WinEndPaint (hps) ;
  113.                return 0 ;
  114.           }
  115.      return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
  116.      }
  117.