# To subscribers of the xforms list from David Scriven <davidwriter@yahoo.com> :
Well it certainly had an effect - inserting that
line gave
X Error of failed request: BadWindow (invalid Window
parameter)
Major opcode of failed request: 3
(X_GetWindowAttributes)
Resource id in failed request: 0x0
Serial number of failed request: 70
Current serial number in output stream: 71
when linking with ver 1.0RC4
and had no effect on ver 0.89.
Perhaps I should recompile ver 1.0RC4 unless
you have a better idea.
--- spl@ncmir.ucsd.edu wrote:
> # To subscribers of the xforms list from
> spl@ncmir.ucsd.edu :
>
> > The image is displayed on an GLCanvas using
> > OpenGL commands such as glDrawPixels
> > Events are trapped using fl_add_canvas_handler
> >
> > I get the impression (no hard data) that there
> > are fewer events being trapped.
>
> Ah. This is a different kettle of fish.
>
> The PointerMotionHintMask is set by default for all
> XForms windows and
> is inherited by the child Canvas window. As far as
> I know, this has
> been this way for a very long time -- way back to
> 0.82 but I don't
> really have an easy way of checking. I certainly
> didn't add it.
>
> You can remove this flag from your GLCanvas with
>
> fl_remove_selected_xevent( FL_ObjWin(
> your_gl_canvas ),
> PointerMotionHintMask );
>
> This call is in several of my applications and some
> of them are five
> or six years old, so I don't think it's especially
> new. Why your app
> performs differently with 0.89 vs 1.0RC4 is not
> clear to me.
>
> Anyhow, give this a try and see if things work
> better.
>
> spl
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