diff options
Diffstat (limited to 'generic/tkWindow.c')
| -rw-r--r-- | generic/tkWindow.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/generic/tkWindow.c b/generic/tkWindow.c index b5cbbab..1e88844 100644 --- a/generic/tkWindow.c +++ b/generic/tkWindow.c @@ -2391,6 +2391,9 @@ Tk_IdToWindow( break; } } + if (window == None) { + return NULL; + } hPtr = Tcl_FindHashEntry(&dispPtr->winTable, (char *) window); if (hPtr == NULL) { |