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-rw-r--r--generic/tkBusy.c4
-rw-r--r--generic/tkWindow.c3
2 files changed, 7 insertions, 0 deletions
diff --git a/generic/tkBusy.c b/generic/tkBusy.c
index 65248a2..b36d453 100644
--- a/generic/tkBusy.c
+++ b/generic/tkBusy.c
@@ -433,6 +433,10 @@ MakeTransparentWindowExist(
TkpMakeTransparentWindowExist(tkwin, parent);
+ if (winPtr->window == None) {
+ return; /* Platform didn't make Window. */
+ }
+
dispPtr = winPtr->dispPtr;
hPtr = Tcl_CreateHashEntry(&dispPtr->winTable, (char *) winPtr->window,
&notUsed);
diff --git a/generic/tkWindow.c b/generic/tkWindow.c
index 81ea0e5..a55c867 100644
--- a/generic/tkWindow.c
+++ b/generic/tkWindow.c
@@ -2358,6 +2358,9 @@ Tk_IdToWindow(
break;
}
}
+ if (window == None) {
+ return NULL;
+ }
hPtr = Tcl_FindHashEntry(&dispPtr->winTable, (char *) window);
if (hPtr == NULL) {