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Microsoft OS/2 SDK PM 08-08-1988

/*--------------------------------------------
   DRAWLINE.C -- Draw line from radio buttons
  --------------------------------------------*/

#define INCL_WIN
#define INCL_GPI

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

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

int main (void)
     {
     static CHAR szClientClass[] = "DrawLine" ;
     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,
                                     "Draw Line",
                                     WS_CLIPCHILDREN, 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 CHAR   *szGroupText [] = { "Color", "Type" } ;
     static CHAR   *szColorText [] = { "Background", "Blue",      "Red",
                                       "Pink",       "Green",     "Cyan",
                                       "Yellow",     "Neutral",   "Dark Gray",
                                       "Pale Blue",  "Pale Red",  "Pale Pink",
                                       "Dark Green", "Dark Cyan", "Brown",     
                                       "Pale Gray" } ;
     static CHAR   *szTypeText  [] = { "Dot",       "Short Dash",
                                       "Dash Dot",  "Double Dot",
                                       "Long Dash", "Dash Double Dot",
                                       "Solid",     "Invisible" } ;
     static HWND   hwndGroup [2], hwndRadioColor [8], hwndRadioType [8] ;
     static POINTL aptl [5] ;
     static SHORT  sCurrentColor = 7,  /* Neutral */
                   sCurrentType  = 6 ; /* Solid */
     FONTMETRICS   fm ;
     HPS           hps ;
     SHORT         s, id, cxChar, cyChar ;

     switch (msg)
          {
          case WM_CREATE :
               hps = WinGetPS (hwnd) ;
               GpiQueryFontMetrics (hps, (LONG) sizeof fm, &fm) ;
               cxChar = (SHORT) fm.lAveCharWidth ;
               cyChar = (SHORT) fm.lMaxBaselineExt ;
               WinReleasePS (hps) ;

               for (s = 0 ; s < 2 ; s++)

                    hwndGroup [s] = WinCreateWindow (
                                        hwnd,               /* Parent      */
                                        WC_STATIC,          /* Class       */
                                        szGroupText [s],    /* Text        */
                                        WS_VISIBLE |        /* Style       */
                                             SS_GROUPBOX,
                                        (8 + 38 * s) * cxChar,
                                        4 * cyChar,         /* Position    */
                                        (24 + 10 * (1 - s)) *
                                             cxChar,        /* Width       */
                                        16 * cyChar,        /* Height      */
                                        hwnd,               /* Owner       */
                                        HWND_TOP,           /* Placement   */
                                        s + 16,             /* ID          */
                                        NULL,               /* Ctrl Data   */
                                        NULL) ;             /* Pres Params */

               for (s = 0 ; s < 16 ; s++)

                    hwndRadioColor [s] = WinCreateWindow (
                                        hwnd,               /* Parent      */
                                        WC_BUTTON,          /* Class       */
                                        szColorText [s],    /* Text        */
                                        WS_VISIBLE |        /* Style       */
                                             BS_RADIOBUTTON,
                                        (10 + (s > 7 ? 16 : 0))
                                             * cxChar,      /* X Position  */
                                        (68 - 7 * (s % 8))
                                             * cyChar / 4,  /* Y Position  */
                                        14 * cxChar,        /* Width       */
                                        12 * cyChar / 8,    /* Height      */
                                        hwnd,               /* Owner       */
                                        HWND_BOTTOM,        /* Placement   */
                                        s,                  /* ID          */
                                        NULL,               /* Ctrl Data   */
                                        NULL) ;             /* Pres Params */

               for (s = 0 ; s < 8 ; s++)

                    hwndRadioType [s]  = WinCreateWindow (
                                        hwnd,               /* Parent      */
                                        WC_BUTTON,          /* Class       */
                                        szTypeText [s],     /* Text        */
                                        WS_VISIBLE |        /* Style       */
                                             BS_RADIOBUTTON,
                                        48 * cxChar,        /* Position    */
                                        (68 - 7 * s) * cyChar / 4,
                                        20 * cxChar,        /* Width       */
                                        12 * cyChar / 8,    /* Height      */
                                        hwnd,               /* Owner       */
                                        HWND_BOTTOM,        /* Placement   */
                                        s + 16,             /* ID          */
                                        NULL,               /* Ctrl Data   */
                                        NULL) ;             /* Pres Params */
                    
               WinSendMsg (hwndRadioColor [sCurrentColor],
                           BM_SETCHECK, MPFROMSHORT (1), NULL) ;

               WinSendMsg (hwndRadioType [sCurrentType],
                           BM_SETCHECK, MPFROMSHORT (1), NULL) ;

               aptl[0].x = aptl[3].x = aptl[4].x = 4 * cxChar ;
               aptl[1].x = aptl[2].x = 74 * cxChar ;

               aptl[0].y = aptl[1].y = aptl[4].y = 2 * cyChar ;
               aptl[2].y = aptl[3].y = 22 * cyChar ;

               return 0 ;

          case WM_CONTROL:
               id = SHORT1FROMMP (mp1) ;

                                   /*-----------
                                      Color IDs
                                     -----------*/
               if (id < 16)
                    {
                    WinSendMsg (hwndRadioColor [sCurrentColor],
                                BM_SETCHECK, MPFROMSHORT (0), NULL) ;

                    sCurrentColor = id ;

                    WinSendMsg (hwndRadioColor [sCurrentColor],
                                BM_SETCHECK, MPFROMSHORT (1), NULL) ;
                    }
                                   /*---------------
				      Line Type IDs
                                     ---------------*/
               else if (id < 24)
                    {
                    WinSendMsg (hwndRadioType [sCurrentType],
                                BM_SETCHECK, MPFROMSHORT (0), NULL) ;

                    sCurrentType = id - 16 ;

                    WinSendMsg (hwndRadioType [sCurrentType],
                                BM_SETCHECK, MPFROMSHORT (1), NULL) ;
                    }
               WinInvalidateRect (hwnd, NULL, TRUE) ;
               return 0 ;

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

               GpiErase (hps) ;

               GpiSetColor (hps, (LONG) sCurrentColor) ;
               GpiSetLineType (hps, sCurrentType + LINETYPE_DOT) ;
               GpiMove (hps, aptl) ;
               GpiPolyLine (hps, 4L, aptl + 1) ;

               WinEndPaint (hps) ;
               return 0 ;

          case WM_ERASEBACKGROUND:
               return 1 ;
          }
     return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
     }

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