diff options
Diffstat (limited to 'macosx/tkMacOSXScrlbr.c')
| -rw-r--r-- | macosx/tkMacOSXScrlbr.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/macosx/tkMacOSXScrlbr.c b/macosx/tkMacOSXScrlbr.c index 0fa6561..4d2cb07 100644 --- a/macosx/tkMacOSXScrlbr.c +++ b/macosx/tkMacOSXScrlbr.c @@ -12,7 +12,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkMacOSXScrlbr.c,v 1.5.2.11 2007/04/29 02:26:50 das Exp $ + * RCS: @(#) $Id: tkMacOSXScrlbr.c,v 1.5.2.12 2007/05/09 12:57:46 das Exp $ */ #include "tkMacOSXInt.h" @@ -846,7 +846,9 @@ ScrollbarBindProc( * Workaround for Carbon bug where the scrollbar down arrow * sometimes gets "stuck" after the mousebutton has been released. */ - TkMacOSXSetUpClippingRgn(Tk_WindowId(scrollPtr->tkwin)); + if (scrollPtr->tkwin) { + TkMacOSXSetUpClippingRgn(Tk_WindowId(scrollPtr->tkwin)); + } Draw1Control(macScrollPtr->sbHandle); } TkMacOSXTrackingLoop(0); @@ -855,8 +857,11 @@ ScrollbarBindProc( * The HandleControlClick call will "eat" the ButtonUp event. We now * generate a ButtonUp event so Tk will unset implicit grabs etc. */ - window = Tk_WindowId(scrollPtr->tkwin); - TkGenerateButtonEventForXPointer(window); + + if (scrollPtr->tkwin) { + window = Tk_WindowId(scrollPtr->tkwin); + TkGenerateButtonEventForXPointer(window); + } if (portChanged) { QDSwapPort(savePort, NULL); |