diff options
| author | William Joye <wjoye@cfa.harvard.edu> | 2016-11-10 21:53:09 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2016-11-10 21:53:09 (GMT) |
| commit | 88503fbe3360a6004b8a2be8ff32cf221c8ef783 (patch) | |
| tree | 002b86581b30006097eec159575f03588bd7ff6b /tksao/frame/base.C | |
| parent | 9aa3a1edb274a8454fededddaf049c276b9756f2 (diff) | |
| download | blt-88503fbe3360a6004b8a2be8ff32cf221c8ef783.zip blt-88503fbe3360a6004b8a2be8ff32cf221c8ef783.tar.gz blt-88503fbe3360a6004b8a2be8ff32cf221c8ef783.tar.bz2 | |
add preventive check to make sure widgetGC has been created
Diffstat (limited to 'tksao/frame/base.C')
| -rw-r--r-- | tksao/frame/base.C | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tksao/frame/base.C b/tksao/frame/base.C index 22a0d9d..d981b9c 100644 --- a/tksao/frame/base.C +++ b/tksao/frame/base.C @@ -1685,6 +1685,10 @@ void Base::updateMagnifier(const Vector& vv) if (!(magnifierXImage && magnifierPixmap)) return; + // just in case + if (!widgetGC) + widgetGC = XCreateGC(display, Tk_WindowId(tkwin), 0, NULL); + if (useMagnifier) { updateMagnifierMatrices(); |