Category : Files from Magazines
Archive : MSJV3-3.ZIP
Filename : GPICODE.ALL
Output of file : GPICODE.ALL contained in archive : MSJV3-3.ZIP
Volume 3; Issue 3; May, 1988
Code Listings For:
CACHEDPS; MICROPS; NORMALPS
pp. 9-18
Author(s): Charles Petzold
Title: The Graphics Programming Interface: A Guide to OS/2
Presentation Spaces
Figure 3
=========
#--------------------
# CACHEDPS make file
#--------------------
cachedps.obj : cachedps.c
cl -c -G2sw -W2 -Zp cachedps.c
cachedps.exe : cachedps.obj cachedps.def
link cachedps, /align:16, NUL, os2, cachedps
==============================================================================
;-------------------------------------
; CACHEDPS.DEF module definition file
;-------------------------------------
NAME CACHEDPS
DESCRIPTION 'Demonstrates Cached Micro-PS (C) Charles Petzold, 1988'
PROTMODE
HEAPSIZE 1024
STACKSIZE 8192
EXPORTS ClientWndProc
==============================================================================
/*--------------------------------------------
CACHEDPS.C -- Demonstrates Cached Micro-PS
--------------------------------------------*/
#define INCL_GPI
#include
MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;
main ()
{
static CHAR szClientClass [] = "CachedPS" ;
HAB hab ;
HMQ hmq ;
HWND hwndFrame, hwndClient ;
QMSG qmsg ;
hab = WinInitialize (0) ;
hmq = WinCreateMsgQueue (hab, 0) ;
WinRegisterClass (hab, szClientClass, ClientWndProc,
CS_SIZEREDRAW, 0) ;
hwndFrame = WinCreateStdWindow (HWND_DESKTOP,
WS_VISIBLE | FS_SIZEBORDER | FS_TITLEBAR
| FS_SYSMENU | FS_MINMAX,
szClientClass, "Cached Micro-PS",
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, msg, mp1, mp2)
HWND hwnd ;
USHORT msg ;
MPARAM mp1 ;
MPARAM mp2 ;
{
static CHAR szText [] = "Graphics Programming Interface" ;
static LONG lTextLength = sizeof szText - 1L ;
static LONG alColorData [] = { CLR_BACKGROUND, RGB_WHITE,
CLR_NEUTRAL, RGB_BLACK } ;
static POINTL ptlTextStart, aptlLineStart [4],
aptlTextBox [TXTBOX_COUNT] ;
static SHORT cxClient, cyClient ;
HPS hps ;
POINTL ptl ;
SHORT sIndex ;
switch (msg)
{
case WM_CREATE:
hps = WinGetPS (hwnd) ;
GpiQueryTextBox (hps, lTextLength, szText,
TXTBOX_COUNT, aptlTextBox) ;
WinReleasePS (hps) ;
break ;
case WM_SIZE:
cxClient = LOUSHORT (mp2) ;
cyClient = HIUSHORT (mp2) ;
ptlTextStart.x = (cxClient -
aptlTextBox [TXTBOX_BOTTOMRIGHT].x -
aptlTextBox [TXTBOX_BOTTOMLEFT].x) / 2 ;
ptlTextStart.y = (cyClient -
aptlTextBox [TXTBOX_TOPLEFT].y -
aptlTextBox [TXTBOX_BOTTOMLEFT].y) / 2 ;
for (sIndex = 0 ; sIndex < 4 ; sIndex ++)
{
aptlLineStart [sIndex] = aptlTextBox [sIndex] ;
aptlLineStart [sIndex].x += ptlTextStart.x ;
aptlLineStart [sIndex].y += ptlTextStart.y ;
}
break ;
case WM_PAINT:
hps = WinBeginPaint (hwnd, NULL, NULL) ;
GpiSavePS (hps) ; /* temp fix */
GpiResetPS (hps, GRES_ATTRS) ; /* temp fix */
GpiCreateLogColorTable (hps, LCOL_RESET,
LCOLF_INDRGB, 0L, 4L, alColorData) ; /* temp fix */
GpiErase (hps) ;
GpiSetColor (hps, CLR_RED) ;
GpiCharStringAt (hps, &ptlTextStart,
lTextLength, szText) ;
GpiSetLineType (hps, LINETYPE_DOT) ;
GpiMove (hps, aptlLineStart + TXTBOX_BOTTOMLEFT) ;
ptl.x = 0 ;
ptl.y = 0 ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_BOTTOMRIGHT) ;
ptl.x = cxClient ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_TOPRIGHT) ;
ptl.y = cyClient ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_TOPLEFT) ;
ptl.x = 0 ;
GpiLine (hps, &ptl) ;
GpiRestorePS (hps, -1L) ; /* temp fix */
WinEndPaint (hps) ;
break ;
default:
return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
}
return FALSE ;
}
Figure 4
========
#-------------------
# MICROPS make file
#-------------------
microps.obj : microps.c
cl -c -G2sw -W2 -Zp microps.c
microps.exe : microps.obj microps.def
link microps, /align:16, NUL, os2, microps
==============================================================================
;------------------------------------
; MICROPS.DEF module definition file
;------------------------------------
NAME MICROPS
DESCRIPTION 'Demonstrates Micro-PS (C) Charles Petzold, 1988'
PROTMODE
HEAPSIZE 1024
STACKSIZE 8192
EXPORTS ClientWndProc
==============================================================================
/*------------------------------------
MICROPS.C -- Demonstrates Micro-PS
------------------------------------*/
#define INCL_WIN
#define INCL_GPI
#include
MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;
HAB hab ;
main ()
{
static CHAR szClientClass [] = "MicroPS" ;
HMQ hmq ;
HWND hwndFrame, hwndClient ;
QMSG qmsg ;
hab = WinInitialize (0) ;
hmq = WinCreateMsgQueue (hab, 0) ;
WinRegisterClass (hab, szClientClass, ClientWndProc,
CS_SIZEREDRAW, 0) ;
hwndFrame = WinCreateStdWindow (HWND_DESKTOP,
WS_VISIBLE | FS_SIZEBORDER | FS_TITLEBAR
| FS_SYSMENU | FS_MINMAX,
szClientClass, "Micro-PS",
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, msg, mp1, mp2)
HWND hwnd ;
USHORT msg ;
MPARAM mp1 ;
MPARAM mp2 ;
{
static CHAR szText [] = "Graphics Programming Interface" ;
static HPS hps ;
static LONG lTextLength = sizeof szText - 1L ;
static LONG alColorData [] = { CLR_BACKGROUND, RGB_WHITE,
CLR_NEUTRAL, RGB_BLACK } ;
static POINTL ptlTextStart, aptlLineStart [4],
aptlTextBox [TXTBOX_COUNT] ;
static SHORT cxClient, cyClient ;
HDC hdc ;
POINTL ptl ;
SHORT sIndex ;
SIZEL sizl ;
switch (msg)
{
case WM_CREATE:
hdc = WinOpenWindowDC (hwnd) ;
sizl.cx = 0 ;
sizl.cy = 0 ;
hps = GpiCreatePS (hab, hdc, &sizl, PU_PELS |
GPIF_DEFAULT | GPIT_MICRO |
GPIM_NORMAL | GPIA_ASSOC) ;
GpiCreateLogColorTable (hps, LCOL_RESET,
LCOLF_INDRGB, 0L, 4L, alColorData) ; /* temp fix */
GpiQueryTextBox (hps, lTextLength, szText,
TXTBOX_COUNT, aptlTextBox) ;
GpiSetColor (hps, CLR_RED) ;
GpiSetLineType (hps, LINETYPE_DOT) ;
break ;
case WM_SIZE:
cxClient = LOUSHORT (mp2) ;
cyClient = HIUSHORT (mp2) ;
ptlTextStart.x = (cxClient -
aptlTextBox [TXTBOX_BOTTOMRIGHT].x -
aptlTextBox [TXTBOX_BOTTOMLEFT].x) / 2 ;
ptlTextStart.y = (cyClient -
aptlTextBox [TXTBOX_TOPLEFT].y -
aptlTextBox [TXTBOX_BOTTOMLEFT].y) / 2 ;
for (sIndex = 0 ; sIndex < 4 ; sIndex ++)
{
aptlLineStart [sIndex] = aptlTextBox [sIndex] ;
aptlLineStart [sIndex].x += ptlTextStart.x ;
aptlLineStart [sIndex].y += ptlTextStart.y ;
}
break ;
case WM_PAINT:
/* BeginPaint (hwnd, hps, NULL) ; */
GpiErase (hps) ;
GpiCharStringAt (hps, &ptlTextStart,
lTextLength, szText) ;
GpiMove (hps, aptlLineStart + TXTBOX_BOTTOMLEFT) ;
ptl.x = 0 ;
ptl.y = 0 ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_BOTTOMRIGHT) ;
ptl.x = cxClient ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_TOPRIGHT) ;
ptl.y = cyClient ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_TOPLEFT) ;
ptl.x = 0 ;
GpiLine (hps, &ptl) ;
/* EndPaint (hps) ; */
WinValidateRect (hwnd, NULL, FALSE) ; /* temp fix */
break ;
case WM_DESTROY:
GpiDestroyPS (hps) ;
break ;
default:
return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
}
return FALSE ;
}
Figure 6
========
#--------------------
# NORMALPS make file
#--------------------
normalps.obj : normalps.c
cl -c -G2sw -W2 -Zp normalps.c
normalps.exe : normalps.obj normalps.def
link normalps, /align:16, NUL, os2, normalps
==============================================================================
;-------------------------------------
; NORMALPS.DEF module definition file
;-------------------------------------
NAME NORMALPS
DESCRIPTION 'Demonstrates Normal-PS (C) Charles Petzold, 1988'
PROTMODE
HEAPSIZE 1024
STACKSIZE 8192
EXPORTS ClientWndProc
==============================================================================
/*--------------------------------------
NORMALPS.C -- Demonstrates Normal-PS
--------------------------------------*/
#define INCL_WIN
#define INCL_GPI
#include
MRESULT EXPENTRY ClientWndProc (HWND, USHORT, MPARAM, MPARAM) ;
HAB hab ;
main ()
{
static CHAR szClientClass [] = "NormalPS" ;
HMQ hmq ;
HWND hwndFrame, hwndClient ;
QMSG qmsg ;
hab = WinInitialize (0) ;
hmq = WinCreateMsgQueue (hab, 0) ;
WinRegisterClass (hab, szClientClass, ClientWndProc,
CS_SIZEREDRAW, 0) ;
hwndFrame = WinCreateStdWindow (HWND_DESKTOP,
WS_VISIBLE | FS_SIZEBORDER | FS_TITLEBAR
| FS_SYSMENU | FS_MINMAX,
szClientClass, "Normal-PS",
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, msg, mp1, mp2)
HWND hwnd ;
USHORT msg ;
MPARAM mp1 ;
MPARAM mp2 ;
{
static CHAR szText [] = "Graphics Programming Interface" ;
static HPS hps ;
static LONG lSegmentName = 1 ;
static LONG lTextLength = sizeof szText - 1L ;
static LONG alColorData [] = { CLR_BACKGROUND, RGB_WHITE,
CLR_NEUTRAL, RGB_BLACK } ;
static POINTL aptlTextBox [TXTBOX_COUNT] ;
HDC hdc ;
POINTL ptl, ptlTextStart, aptlLineStart [4] ;
SHORT cxClient, cyClient, sIndex ;
SIZEL sizl ;
switch (msg)
{
case WM_CREATE:
hdc = WinOpenWindowDC (hwnd) ;
sizl.cx = 0 ;
sizl.cy = 0 ;
hps = GpiCreatePS (hab, hdc, &sizl, PU_PELS |
GPIF_DEFAULT | GPIT_NORMAL |
GPIM_NORMAL | GPIA_ASSOC) ;
GpiCreateLogColorTable (hps, LCOL_RESET,
LCOLF_INDRGB, 0L, 4L, alColorData) ; /* temp fix */
GpiQueryTextBox (hps, lTextLength, szText,
TXTBOX_COUNT, aptlTextBox) ;
GpiSetDrawControl (hps, DCTL_ERASE, DCTL_ON) ;
GpiSetDrawingMode (hps, DM_RETAIN) ;
break ;
case WM_SIZE:
cxClient = LOUSHORT (mp2) ;
cyClient = HIUSHORT (mp2) ;
ptlTextStart.x = (cxClient -
aptlTextBox [TXTBOX_BOTTOMRIGHT].x -
aptlTextBox [TXTBOX_BOTTOMLEFT].x) / 2 ;
ptlTextStart.y = (cyClient -
aptlTextBox [TXTBOX_TOPLEFT].y -
aptlTextBox [TXTBOX_BOTTOMLEFT].y) / 2 ;
for (sIndex = 0 ; sIndex < 4 ; sIndex ++)
{
aptlLineStart [sIndex] = aptlTextBox [sIndex] ;
aptlLineStart [sIndex].x += ptlTextStart.x ;
aptlLineStart [sIndex].y += ptlTextStart.y ;
}
GpiDeleteSegment (hps, lSegmentName) ;
GpiOpenSegment (hps, lSegmentName) ;
{
GpiSetColor (hps, CLR_RED) ;
GpiCharStringAt (hps, &ptlTextStart,
lTextLength, szText) ;
GpiSetLineType (hps, LINETYPE_DOT) ;
GpiMove (hps, aptlLineStart + TXTBOX_BOTTOMLEFT) ;
ptl.x = 0 ;
ptl.y = 0 ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_BOTTOMRIGHT) ;
ptl.x = cxClient ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_TOPRIGHT) ;
ptl.y = cyClient ;
GpiLine (hps, &ptl) ;
GpiMove (hps, aptlLineStart + TXTBOX_TOPLEFT) ;
ptl.x = 0 ;
GpiLine (hps, &ptl) ;
}
GpiCloseSegment (hps) ;
break ;
case WM_PAINT:
/* WinBeginPaint (hwnd, hps, NULL) ; */
GpiDrawChain (hps) ;
/* WinEndPaint (hps) ; */
WinValidateRect (hwnd, NULL, FALSE) ; /* temp fix */
break ;
case WM_DESTROY:
GpiDeleteSegment (hps, lSegmentName) ;
GpiAssociate (hps, NULL) ;
GpiDestroyPS (hps) ;
break ;
default:
return WinDefWindowProc (hwnd, msg, mp1, mp2) ;
}
return FALSE ;
}
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