I am noticing some wierd behavior in the color POSE and the debug OS 3.5 and I am
wondering what the right thing to do is.
The problem occurs when a FrmUpdateEvent is sent to the form, like after doing a find,
and then canceling the find dialog.
The first thing I noticed is that the window attached to the current active form, is
NOT the same as what you get when you call WinGetActiveWindow() at this point. It
looks like the WinGetActiveWindow is the Find window, but I can't quite tell. If I
draw to the WinGetActiveWindow at this point, the drawing is all shifted down to the
top of where the Find window used to be...it is shifted, not clipped.
So, to get around this, I instead got the window out of the active form, and drew to
that. Now the problem is that I first call FrmDrawForm, like I am supposed to do, and
then start drawing. The FrmDrawForm erases the whole screen, but subsequent drawing is
now all CLIPPED to where the Find window used to be. I checked the window structure,
and the clipping rectangle is set to where the Find window used to be, so I suspect
the clipping is what is supposed to happen. However, it appears the FrmDrawForm is
ignoring the current clipping rectangle and blasting the whole screen.
What should I do, reset the clipping rectangle so that my drawing doesn't clip any
more?
Here is some source code as an example. The _currentScreen is an offscreen window.
static void DrawingDrawForm(void)
{
RectangleType r;
UInt8* pLock = NULL;
IndexedColorType curForeColor;
FormPtr pForm;
WinHandle hWin;
pForm = FrmGetActiveForm();
FrmDrawForm(pForm); // blasts the whole form
//hWin = WinGetActiveWindow(); // not really the active form's window any more
hWin = FrmGetWindowHandle(pForm);
RctSetRectangle (&r, 0, 0, 160, 140);
WinCopyRectangle (_currentScreen, hWin, &r, 0, 0, scrCopy); // clipped to
active window's clipping rect
}
Thanks,
Shannon
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Hands High Software
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