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- /*--------------------------------------------------
- DEVCAPS.C -- Device Capabilities Display Program
- --------------------------------------------------*/
-
- #define INCL_WIN
- #define INCL_GPI
- #include <os2.h>
- #include <stdlib.h>
- #include <string.h>
- #include "devcaps.h"
-
- MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;
-
- int main (void)
- {
- static CHAR szClientClass [] = "DevCaps" ;
- static ULONG flFrameFlags = FCF_TITLEBAR | FCF_SYSMENU |
- FCF_SIZEBORDER | FCF_MINMAX |
- FCF_SHELLPOSITION | FCF_TASKLIST ;
- HAB hab ;
- HMQ hmq ;
- HWND hwndFrame, hwndClient ;
- QMSG qmsg ;
-
- hab = WinInitialize (0) ;
- hmq = WinCreateMsgQueue (hab, 0) ;
-
- WinRegisterClass (hab, szClientClass, ClientWndProc, 0L, 0) ;
-
- hwndFrame = WinCreateStdWindow (HWND_DESKTOP, WS_VISIBLE,
- &flFrameFlags, szClientClass, NULL,
- 0L, NULL, 0, &hwndClient) ;
-
- WinSendMsg (hwndFrame, WM_SETICON,
- WinQuerySysPointer (HWND_DESKTOP, SPTR_APPICON, FALSE),
- NULL) ;
-
- while (WinGetMsg (hab, &qmsg, NULL, 0, 0))
- WinDispatchMsg (hab, &qmsg) ;
-
- WinDestroyWindow (hwndFrame) ;
- WinDestroyMsgQueue (hmq) ;
- WinTerminate (hab) ;
- return 0 ;
- }
-
- LONG RtJustCharStringAt (HPS hps, POINTL *pptl, LONG lLength, CHAR *pchText)
- {
- POINTL aptlTextBox[TXTBOX_COUNT] ;
-
- GpiQueryTextBox (hps, lLength, pchText, TXTBOX_COUNT, aptlTextBox) ;
-
- pptl->x -= aptlTextBox[TXTBOX_CONCAT].x ;
-
- return GpiCharStringAt (hps, pptl, lLength, pchText) ;
- }
-
- MRESULT EXPENTRY ClientWndProc (HWND hwnd, USHORT msg, MPARAM mp1, MPARAM mp2)
- {
- static HDC hdc ;
- static SHORT cxClient, cyClient, cxCaps, cyChar, cyDesc ;
- CHAR szBuffer [12] ;
- FONTMETRICS fm ;
- LONG lValue ;
- POINTL ptl ;
- HPS hps ;
- SHORT sLine ;
-
- switch (msg)
- {
- case WM_CREATE:
- hps = WinGetPS (hwnd) ;
- GpiQueryFontMetrics (hps, (LONG) sizeof fm, &fm) ;
- cxCaps = (SHORT) fm.lEmInc ;
- cyChar = (SHORT) fm.lMaxBaselineExt ;
- cyDesc = (SHORT) fm.lMaxDescender ;
- WinReleasePS (hps) ;
-
- hdc = WinOpenWindowDC (hwnd) ;
- return 0 ;
-
- case WM_SIZE:
- cxClient = SHORT1FROMMP (mp2) ;
- cyClient = SHORT2FROMMP (mp2) ;
- return 0 ;
-
- case WM_PAINT:
- hps = WinBeginPaint (hwnd, NULL, NULL) ;
- GpiErase (hps) ;
-
- for (sLine = 0 ; sLine < NUMLINES ; sLine++)
- {
- ptl.x = cxCaps ;
- ptl.y = cyClient - cyChar * (sLine + 2) + cyDesc ;
-
- if (sLine >= (NUMLINES + 1) / 2)
- {
- ptl.x += cxCaps * 35 ;
- ptl.y += cyChar * (NUMLINES + 1) / 2 ;
- }
-
- DevQueryCaps (hdc, devcaps[sLine].lIndex, 1L, &lValue) ;
-
- GpiCharStringAt (hps, &ptl,
- (LONG) strlen (devcaps[sLine].szIdentifier),
- devcaps[sLine].szIdentifier) ;
-
- ptl.x += 33 * cxCaps ;
- RtJustCharStringAt (hps, &ptl,
- (LONG) strlen (ltoa (lValue, szBuffer, 10)),
- szBuffer) ;
- }
- WinEndPaint (hps) ;
- return 0 ;
- }
- return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
- }