Sample Code
Windows Driver Samples/ MSPLOT Plotter Driver Sample/ C++/ plotter/ plotform.c/
/*++
Copyright (c) 1990-2003 Microsoft Corporation
Module Name:
plotform.c
Abstract:
This module contains functions to set the correct HPGL/2 plotter
coordinate system
Author:
30-Nov-1993 Tue 20:31:28 created
[Environment:]
GDI Device Driver - Plotter.
[Notes:]
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
#define DBG_PLOTFILENAME DbgPlotForm
#define DBG_PLOTFORM 0x00000001
#define DBG_FORMSIZE 0x00000002
#define DBG_INTERNAL_ROT 0x00000004
#define DBG_PF 0x00000008
DEFINE_DBGVAR(0);
#if DBG
LPSTR pBmpRotMode[] = { "----- NONE -----",
"BMP_ROT_RIGHT_90" };
#endif
BOOL
SetPlotForm(
PPLOTFORM pPlotForm,
PPLOTGPC pPlotGPC,
PPAPERINFO pCurPaper,
PFORMSIZE pCurForm,
PPLOTDEVMODE pPlotDM,
PPPDATA pPPData
)
/*++
Routine Description:
This function computes the current FORM based on the printed margin. Auto
rotation, landscape and other attributes are taken into account. The
result is put into a PLOTFORM data structure located in our PDEV. This
information is used to report data to GDI, as well as compute the HPGL2
parameters for sizing the target surface.
Arguments:
pPlotForm - Pointer to the PLOTFROM data structure which will be updated
pPlotGPC - Pointer to the PLOTGPC data structure
pCurPaper - Pointer to the PAPERINFO for the paper loaded
pCurForm - Pointer to the FORMSIZE for the requested form
pPlotDM - Pointer to the validated PLOTDEVMODE data structure
pPPData - Pointer to the PPDATA structure
Return Value:
TRUE if sucessful, FALSE if failed
Author:
29-Nov-1993 Mon 13:58:09 created
17-Dec-1993 Fri 23:09:38 updated
Re-write so that we will look at CurPaper rather than pCurForm when
setting the PSSize, p1/p2 stuff, it also rotate the pCurPaper if
GPC/user said that the paper should loaded side way
20-Dec-1993 Mon 12:59:38 updated
correct PFF_xxxx flag setting so we always rotate the bitmap to the
left 90 degree
23-Dec-1993 Thu 20:35:57 updated
Fixed roll paper clipping problem, change behavior, if we have roll
paper installed then the it will make hard clip limit as big as user
specified form size.
24-Dec-1993 Fri 12:20:02 updated
Re-plot again, this is become really paint just try to understand what
HP plotter design problems
06-Jan-1994 Thu 00:22:45 updated
Update SPLTOPLOTUNITS() macro
07-Feb-1996 Wed 15:46:06 updated
Change it so that it always using the current devmode form and then
clip it to the device size.
Revision History:
This assumes that the user inserted the paper with width of the form
first,
LEGEND:
+ = Original paper corners
* = Original plotter origin and its X/Y coordinate
@ = the rotated origin using 'RO' command, intended to rotate the X/Y
axis to the correct orientation for the window system
# = Final plotter origin and its X/Y coordinate
p1,p2 = final P1/P2 which will be used by the plotter driver
cx,cy = Original paper width/height
The following explaines how HPGL/2 loads the paper/form and
assigns the default coordinate system to it, it also shows which way the
paper is moving, the illustration to the right is when we need to
rotate the printing direction and coordinate system when user selects
the non-conforming X/Y coordinate system as opposed to the HPGL/2 default.
=======================================================================
LENGTH >= WIDTH (CY >= CX) case
=======================================================================
Portrait Paper Rotate Change Origin
Default Left 90 Negative Y
p2 cx cx p1 cx
+---------+ +---------+ +---------+
| | | <------@| | |
| | | X || | ^|
| | ^| | | || | | ||
c| M || RO90 c| M || IP c| M ||
y| o || =====> y| o || ====> y| o ||
| v || | v Y|| | v Y||
| e X|| | e || | e ||
| | || | | || | | ||
| V || | V || | V ||
| Y || | V| | X ||
| <------*| | | | <------#|
+---------+ +---------+ +---------+
p1 p2
|
IP|
|
V
Change Origin
Negative X
cx
+---------+
| <------#|
| Y ||
| | ||
c| M ||
y| o ||
| v X||
| e ||
| | ||
| V ||
| V|
| |
+---------+
=======================================================================
LENGTH < WIDTH (CY < CX) case
=======================================================================
Landscape Rotate Left 90 Change Origin
Paper Default Negative X
cx p2 p2 cx cx
+---------------+ +---------------+ +---------------+
| | | | | <--------#|
|^ | | | | ^| | | Y ||
c|| M | c| M || c| M ||
y|| o | y| o || y| o ||
|| v | RO90 | v X|| IP | v X||
||Y e | =====> | e || ====> | e ||
|| | | | | || | | ||
|| X V | | V Y || | V V|
|*--------> | | <--------@| | |
+---------------+ +---------------+ +---------------+
p1 p1
|
IP|
|
V
Change Origin
Negative X
cx
+---------------+
| |
| | ^|
c| M ||
y| o ||
| v Y||
| e ||
| | ||
| V X ||
| <--------#|
+---------------+
--*/
{
PLOTFORM PF;
FORMSIZE DevForm;
FORMSIZE ReqForm;
RECTL rclDev;
RECTL rclLog;
SIZEL DeviceSize;
LONG lTemp;
BOOL DoRotate;
PLOTDBG(DBG_PF, ("\n************* SetPlotForm *************\n"));
//
// We default using DeviceSize to check against the requested paper
//
DeviceSize = pPlotGPC->DeviceSize;
rclDev = pPlotGPC->DeviceMargin;
DoRotate = FALSE;
//
// Assume we using the current form from the devmode
//
DevForm =
ReqForm = *pCurForm;
PLOTDBG(DBG_PF, ("DeviceSize: %ld x %ld, L=%ld, T=%ld, R=%ld, B=%ld",
DeviceSize.cx, DeviceSize.cy,
rclDev.left, rclDev.top, rclDev.right, rclDev.bottom));
PLOTDBG(DBG_PF, ("ReqForm: <%s>",
pPlotDM->dm.dmFormName, ReqForm.Size.cx, ReqForm.Size.cy));
PLOTDBG(DBG_PF, ("ReqForm: %ld x %ld, L=%ld, T=%ld, R=%ld, B=%ld [%ld x %ld]",
ReqForm.Size.cx, ReqForm.Size.cy,
ReqForm.ImageArea.left, ReqForm.ImageArea.top,
ReqForm.ImageArea.right, ReqForm.ImageArea.bottom,
ReqForm.ImageArea.right - ReqForm.ImageArea.left,
ReqForm.ImageArea.bottom - ReqForm.ImageArea.top));
if (pCurPaper->Size.cy == 0) {
//
// ROLL PAPER CASE
//
// If we have roll paper installed, we must determine the projection
// of the current form on the roll paper in order to get the size
// to come out correctly.
//
DevForm.Size.cx = pCurPaper->Size.cx;
DevForm.Size.cy = DeviceSize.cy;
PLOTDBG(DBG_PF,(">>ROLL FEED<< RollPaper = %ld x %ld, <RESET rclDev to ALL ZEROs>",
DevForm.Size.cx, DevForm.Size.cy));
} else if ((pPlotGPC->Flags & PLOTF_PAPERTRAY) &&
((DevForm.Size.cx == DeviceSize.cx) ||
(DevForm.Size.cy == DeviceSize.cx))) {
//
// PAPER TRAY CASE: We need to make the DeviceSize equal to the DevForm
// so that the margin will be correctly computed
//
DoRotate = (BOOL)(DevForm.Size.cx != DeviceSize.cx);
PLOTDBG(DBG_PF,(">>PAPER TRAY<< Rotate Paper = %hs",
(DoRotate) ? "YES" : "NO"));
} else {
PLOTASSERT(0, "SetPlotForm: Not supposed MANUAL feed the PAPER TRAY type PLOTTER",
!(pPlotGPC->Flags & PLOTF_PAPERTRAY), pPlotGPC->Flags);
PLOTDBG(DBG_PF,(">>MANUAL FEED<<"));
//
// MANUAL FEED CASE, this is the way paper is physically loaded, only
// problem is if the paper is smaller than device can handle then we
// really don't know where they inserted the paper.
//
DoRotate = (BOOL)(!(pPPData->Flags & PPF_MANUAL_FEED_CX));
PLOTDBG(DBG_PF,("The MANUAL FEED paper Inserted %hs side first.",
(DoRotate) ? "Length CY" : "Width CX"));
}
if (DoRotate) {
SWAP(DevForm.Size.cx, DevForm.Size.cy, lTemp);
PLOTDBG(DBG_PF, ("### Rotated DevForm to %ld x %ld ###",
DevForm.Size.cx, DevForm.Size.cy));
}
//
// Make sure largest requested form can be installed on the plotter
//
if (DevForm.Size.cx > DeviceSize.cx) {
PLOTDBG(DBG_PF, ("WIDTH: DevForm (%ld) > DeviceSize (%ld). CORRECT IT",
DevForm.Size.cx, DeviceSize.cx));
DevForm.Size.cx = DeviceSize.cx;
}
if (DevForm.Size.cy > DeviceSize.cy) {
PLOTDBG(DBG_PF, ("HEIGHT: DevForm (%ld) > DeviceSize (%ld). CORRECT IT",
DevForm.Size.cy, DeviceSize.cy));
DevForm.Size.cy = DeviceSize.cy;
}
//
// Figure out how to fit this requested form onto loaded device form
//
DoRotate = FALSE;
if ((DevForm.Size.cx >= ReqForm.Size.cx) &&
(DevForm.Size.cy >= ReqForm.Size.cy)) {
//
// Can print without doing any rotation, but check for paper saver,
// the paper saver is only possible if:
//
// 1) Is a Roll paper,
// 2) User approves
// 3) ReqForm length > width
// 4) DevForm width >= ReqForm length
//
if ((pCurPaper->Size.cy == 0) &&
(pPPData->Flags & PPF_AUTO_ROTATE) &&
(ReqForm.Size.cy > ReqForm.Size.cx) &&
(DevForm.Size.cx >= ReqForm.Size.cy)) {
PLOTDBG(DBG_PF, ("ROLL PAPER SAVER: Doing AUTO_ROTATE"));
DoRotate = !DoRotate;
}
} else if ((DevForm.Size.cx >= ReqForm.Size.cy) &&
(DevForm.Size.cy >= ReqForm.Size.cx)) {
//
// Can print but we have to rotate the form ourselves
//
PLOTDBG(DBG_PF, ("INTERNAL ROTATE to fit Requseted FROM into device"));
DoRotate = !DoRotate;
} else {
//
// CANNOT print the requested form, so clip the form requested
//
PLOTDBG(DBG_PF, (">>>>> ReqForm is TOO BIG to FIT, Need to CLIP IT <<<<<"));
ReqForm.Size = DevForm.Size;
}
if (DoRotate) {
DoRotate = (BOOL)(pPlotDM->dm.dmOrientation != DMORIENT_LANDSCAPE);
//
// If we need to rotate one more time back to the same position for
// the logical paper size then we must rotate to the left first, this
// is because ALL our ORIGIN x,y are either at the front of the plotter
// or at the front panel side of the plotter
//
RotatePaper(&(ReqForm.Size),
&(ReqForm.ImageArea),
(DoRotate) ? RM_L90 : RM_R90);
PLOTDBG(DBG_PF, ("INTERNAL Rotated ReqForm: %ld x %ld, L=%ld, T=%ld, R=%ld, B=%ld [%ld x %ld]",
ReqForm.Size.cx, ReqForm.Size.cy,
ReqForm.ImageArea.left, ReqForm.ImageArea.top,
ReqForm.ImageArea.right, ReqForm.ImageArea.bottom,
ReqForm.ImageArea.right - ReqForm.ImageArea.left,
ReqForm.ImageArea.bottom - ReqForm.ImageArea.top));
} else {
DoRotate = (BOOL)(pPlotDM->dm.dmOrientation == DMORIENT_LANDSCAPE);
}
//
// Now the ReqForm is guaranteed to fit into the device paper. Find out how
// it fits into the printable area and set the hardware margins appropriately.
//
DevForm.Size = ReqForm.Size;
DevForm.ImageArea.left = rclDev.left;
DevForm.ImageArea.top = rclDev.top;
DevForm.ImageArea.right = DevForm.Size.cx - rclDev.right;
DevForm.ImageArea.bottom = DevForm.Size.cy - rclDev.bottom;
//
// Intersect the requested form imageable area with the DevForm imageable area
//
IntersectRECTL(&(ReqForm.ImageArea), &(DevForm.ImageArea));
//
// Now figure out the offset from the logical margin to the physical margin
//
rclLog.left = ReqForm.ImageArea.left - DevForm.ImageArea.left;
rclLog.top = ReqForm.ImageArea.top - DevForm.ImageArea.top;
rclLog.right = DevForm.ImageArea.right - ReqForm.ImageArea.right;
rclLog.bottom = DevForm.ImageArea.bottom - ReqForm.ImageArea.bottom;
//
// Rotate the requested form if necessary
//
if (DoRotate) {
RotatePaper(&(ReqForm.Size), &(ReqForm.ImageArea), RM_R90);
//
// Now we can pick the right margin/corner for the rotation
//
// cx Rotate Left 90 Rotate Right 90
// +-------+
// | T | cy cy
// | | +------------+ +------------+
// c| | | R | | L |
// y| | c| | c| |
// |L R| x| | x| |
// | | |T B| |B T|
// | | | | | |
// | | | L | | R |
// | B | +------------+ +------------+
// +-------+
//
PLOTDBG(DBG_PF, ("ROTATED RIGHT ReqForm: %ld x %ld, L=%ld, T=%ld, R=%ld, B=%ld [%ld x %ld]",
ReqForm.Size.cx, ReqForm.Size.cy,
ReqForm.ImageArea.left, ReqForm.ImageArea.top,
ReqForm.ImageArea.right, ReqForm.ImageArea.bottom,
ReqForm.ImageArea.right - ReqForm.ImageArea.left,
ReqForm.ImageArea.bottom - ReqForm.ImageArea.top));
}
PLOTDBG(DBG_PF, ("FINAL DevForm: %ld x %ld, L=%ld, T=%ld, R=%ld, B=%ld [%ld x %ld]",
DevForm.Size.cx, DevForm.Size.cy,
DevForm.ImageArea.left, DevForm.ImageArea.top,
DevForm.ImageArea.right, DevForm.ImageArea.bottom,
DevForm.ImageArea.right - DevForm.ImageArea.left,
DevForm.ImageArea.bottom - DevForm.ImageArea.top));
PLOTDBG(DBG_PF, ("FINAL ReqForm: %ld x %ld, L=%ld, T=%ld, R=%ld, B=%ld [%ld x %ld]",
ReqForm.Size.cx, ReqForm.Size.cy,
ReqForm.ImageArea.left, ReqForm.ImageArea.top,
ReqForm.ImageArea.right, ReqForm.ImageArea.bottom,
ReqForm.ImageArea.right - ReqForm.ImageArea.left,
ReqForm.ImageArea.bottom - ReqForm.ImageArea.top));
PLOTDBG(DBG_PF, ("rclLog: L=%ld, T=%ld, R=%ld, B=%ld",
rclLog.left, rclLog.top, rclLog.right, rclLog.bottom));
//
// Set fields in PLOTFORM
//
PF.Flags = 0;
PF.BmpRotMode = BMP_ROT_NONE;
PF.NotUsed = 0;
PF.PlotSize.cx = DevForm.ImageArea.right - DevForm.ImageArea.left;
PF.PlotSize.cy = DevForm.ImageArea.bottom - DevForm.ImageArea.top;
PF.PhyOrg.x = ReqForm.ImageArea.left;
PF.PhyOrg.y = ReqForm.ImageArea.top;
PF.LogSize = ReqForm.Size;
PF.LogExt.cx = ReqForm.ImageArea.right - ReqForm.ImageArea.left;
PF.LogExt.cy = ReqForm.ImageArea.bottom - ReqForm.ImageArea.top;
PF.BmpOffset.x = rclLog.left;
PF.BmpOffset.y = rclLog.top;
if (PF.PlotSize.cy >= PF.PlotSize.cx) {
PLOTDBG(DBG_FORMSIZE,(">>>>> Plot SIze: CY >= CX (%ld: VERTICAL%hs) <<<<<",
(DoRotate) ? 1 : 2,
(DoRotate) ? " + ROTATE" : ""));
//
// The Standard HPGL/2 coordinate Y direction in in reverse, the scale
// is from Max Y to 0.
//
if (DoRotate) {
//
// Portrait Paper Scale Coord X
// Default Negative X
//
// p2 cx cx
// +---------+ +---------+
// | | | <------#|
// | | | Y ||
// | | ^| | | ||
// c| M || c| M ||
// y| o || ====> y| o ||
// | v || | v X||
// | e X|| | e ||
// | | || | | ||
// | V || | V ||
// | Y || | V|
// | <------*| | |
// +---------+ +---------+
// p1
//
PF.Flags |= PFF_FLIP_X_COORD;
PF.BmpRotMode = BMP_ROT_RIGHT_90;
PF.LogOrg.x = rclLog.top;
PF.LogOrg.y = rclLog.left;
} else {
//
// Portrait Paper Rotate Scale Coord Y
// Default Left 90 Negative Y
//
// p2 cx cx p1 cx
// +---------+ +---------+ +---------+
// | | | <------@| | |
// | | | X || | ^|
// | | ^| | | || | | ||
// c| M || RO90 c| M || c| M ||
// y| o || =====> y| o || ====> y| o ||
// | v || | v Y|| | v Y||
// | e X|| | e || | e ||
// | | || | | || | | ||
// | V || | V || | V ||
// | Y || | V| | X ||
// | <------*| | | | <------#|
// +---------+ +---------+ +---------+
// p1 p2
//
PF.Flags |= (PFF_ROT_COORD_L90 | PFF_FLIP_Y_COORD);
PF.LogOrg.x = rclLog.left;
PF.LogOrg.y = rclLog.bottom;
}
} else {
PLOTDBG(DBG_FORMSIZE,(">>>>> SetPlotForm: CY < CX (%ld: HORIZONTAL%hs) <<<<<",
(DoRotate) ? 3 : 4,
(DoRotate) ? " + ROTATE" : ""));
//
// The Standard HPGL/2 coordinate X direction in in reverse, the scale
// is from Max X to 0
//
if (DoRotate) {
//
// DoRotate Rotate Left 90 Scale Coord X
// Paper Default Negative X
//
// cx p2 p2 cx cx
// +---------------+ +---------------+ +---------------+
// | | | | | <--------#|
// |^ | | | | ^| | | Y ||
// c|| M | c| M || c| M ||
// y|| o | y| o || y| o ||
// || v | RO90 | v X|| | v X||
// ||Y e |=====> | e || ==> | e ||
// || | | | | || | | ||
// || X V | | V Y || | V V|
// |*--------> | | <--------@| | |
// +---------------+ +---------------+ +---------------+
// p1 p1
//
PF.Flags |= (PFF_ROT_COORD_L90 | PFF_FLIP_X_COORD);
PF.BmpRotMode = BMP_ROT_RIGHT_90;
PF.LogOrg.x = rclLog.top;
PF.LogOrg.y = rclLog.left;
} else {
//
// DoRotate Scale Coord X
// Paper Default Negative X
//
// cx p2 cx
// +----------------+ +-----------------+
// | | | |
// |^ | | | | ^|
// c|| M | c| M ||
// y|| o | y| o ||
// || v | ====> | v Y||
// ||Y e | | e ||
// || | | | | ||
// || X V | | V X ||
// |*--------> | | <--------#|
// +----------------+ +-----------------+
// p1
//
PF.Flags |= PFF_FLIP_X_COORD;
PF.LogOrg.x = rclLog.right;
PF.LogOrg.y = rclLog.top;
}
}
PLOTDBG(DBG_PF, ("FINAL LogOrg: (%ld, %ld), PhyOrg=(%ld, %ld)",
PF.LogOrg.x, PF.LogOrg.y, PF.PhyOrg.x, PF.PhyOrg.y));
//
// Save result and output some information
//
*pPlotForm = PF;
PLOTDBG(DBG_PLOTFORM,("******************************************************"));
PLOTDBG(DBG_PLOTFORM,("******* SetPlotForm: ****** %hs --> %hs ******\n",
(pPlotDM->dm.dmOrientation == DMORIENT_LANDSCAPE) ?
"LANDSCAPE" : "PORTRAIT",
(DoRotate) ? "LANDSCAPE" : "PORTRAIT"));
PLOTDBG(DBG_PLOTFORM,(" Flags =%hs%hs%hs",
(PF.Flags & PFF_ROT_COORD_L90) ? " <ROT_COORD_L90> " : "",
(PF.Flags & PFF_FLIP_X_COORD) ? " <FLIP_X_COORD> " : "",
(PF.Flags & PFF_FLIP_Y_COORD) ? " <FLIP_Y_COORD> " : ""));
PLOTDBG(DBG_PLOTFORM,(" BmpRotMode = %hs", pBmpRotMode[PF.BmpRotMode]));
PLOTDBG(DBG_PLOTFORM,(" PlotSize = (%7ld x%7ld) [%5ld x%6ld]",
PF.PlotSize.cx, PF.PlotSize.cy,
SPLTOPLOTUNITS(pPlotGPC, PF.PlotSize.cx),
SPLTOPLOTUNITS(pPlotGPC, PF.PlotSize.cy)));
PLOTDBG(DBG_PLOTFORM,("PhyOrg/Offset = (%7ld,%8ld) [%5ld,%7ld] ",
PF.PhyOrg.x, PF.PhyOrg.y,
SPLTOPLOTUNITS(pPlotGPC, PF.PhyOrg.x),
SPLTOPLOTUNITS(pPlotGPC, PF.PhyOrg.y)));
PLOTDBG(DBG_PLOTFORM,(" LogSize = (%7ld x%7ld) [%5ld x%6ld]",
PF.LogSize.cx, PF.LogSize.cy,
SPLTOPLOTUNITS(pPlotGPC, PF.LogSize.cx),
SPLTOPLOTUNITS(pPlotGPC, PF.LogSize.cy)));
PLOTDBG(DBG_PLOTFORM,(" LogOrg/p1 = (%7ld,%8ld) [%5ld,%7ld]",
PF.LogOrg.x, PF.LogOrg.y,
SPLTOPLOTUNITS(pPlotGPC, PF.LogOrg.x),
SPLTOPLOTUNITS(pPlotGPC, PF.LogOrg.y)));
PLOTDBG(DBG_PLOTFORM,(" LogExt = (%7ld,%8ld) [%5ld,%7ld]\n",
PF.LogExt.cx, PF.LogExt.cy,
SPLTOPLOTUNITS(pPlotGPC, PF.LogExt.cx),
SPLTOPLOTUNITS(pPlotGPC, PF.LogExt.cy)));
PLOTDBG(DBG_PLOTFORM,(" BmpOffset = (%7ld,%8ld) [%5ld,%7ld]",
PF.BmpOffset.x, PF.BmpOffset.y,
SPLTOPLOTUNITS(pPlotGPC, PF.BmpOffset.x),
SPLTOPLOTUNITS(pPlotGPC, PF.BmpOffset.y)));
PLOTDBG(DBG_PLOTFORM,
("Commands=PS%ld,%ld;%hsIP%ld,%ld,%ld,%ld;SC%ld,%ld,%ld,%ld\n",
SPLTOPLOTUNITS(pPlotGPC, PF.PlotSize.cy),
SPLTOPLOTUNITS(pPlotGPC, PF.PlotSize.cx),
(PF.Flags & PFF_ROT_COORD_L90) ? "RO90;" : "",
SPLTOPLOTUNITS(pPlotGPC, PF.LogOrg.x),
SPLTOPLOTUNITS(pPlotGPC, PF.LogOrg.y),
SPLTOPLOTUNITS(pPlotGPC, (PF.LogOrg.x + PF.LogExt.cx)) - 1,
SPLTOPLOTUNITS(pPlotGPC, (PF.LogOrg.y + PF.LogExt.cy)) - 1,
(PF.Flags & PFF_FLIP_X_COORD) ?
SPLTOPLOTUNITS(pPlotGPC, PF.LogExt.cx) - 1 : 0,
(PF.Flags & PFF_FLIP_X_COORD) ?
0 : SPLTOPLOTUNITS(pPlotGPC, PF.LogExt.cx) - 1,
(PF.Flags & PFF_FLIP_Y_COORD) ?
SPLTOPLOTUNITS(pPlotGPC, PF.LogExt.cy) - 1 : 0,
(PF.Flags & PFF_FLIP_Y_COORD) ?
0 : SPLTOPLOTUNITS(pPlotGPC, PF.LogExt.cy) - 1));
return(TRUE);
}
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