Enhance the tests for <<NoManagedChild>>, and fix the implementation so that this event only fires when the last slave is forgotten/removed.

1 files changed, 8 insertions, 4 deletions

diff --git a/generic/tkGrid.c b/generic/tkGrid.c
index 4711685..ec22016 100644
--- a/generic/tkGrid.c
+++ b/generic/tkGrid.c
@@ -1735,13 +1735,9 @@ ArrangeGrid(
      * If the master has no slaves anymore, then don't change the master size.
      * Otherwise there is no way to "relinquish" control over the master
      * so another geometry manager can take over.
-     *
-     * Sends the event "NoManagedChild" to the master to inform it about there
-     * being no managed children inside it.
      */
 
     if (masterPtr->slavePtr == NULL) {
-	TkSendVirtualEvent(masterPtr->tkwin, "NoManagedChild", NULL);
 	return;
     }
 
@@ -2780,11 +2776,15 @@ Unlink(
     /*
      * If we have emptied this master from slaves it means we are no longer
      * handling it and should mark it as free.
+     *
+     * Send the event "NoManagedChild" to the master to inform it about there
+     * being no managed children inside it.
      */
 
     if ((masterPtr->slavePtr == NULL) && (masterPtr->flags & ALLOCED_MASTER)) {
 	TkFreeGeometryMaster(masterPtr->tkwin, "grid");
 	masterPtr->flags &= ~ALLOCED_MASTER;
+	TkSendVirtualEvent(masterPtr->tkwin, "NoManagedChild", NULL);
     }
 }
 
@@ -3512,11 +3512,15 @@ ConfigureSlaves(
     /*
      * If we have emptied this master from slaves it means we are no longer
      * handling it and should mark it as free.
+     *
+     * Send the event "NoManagedChild" to the master to inform it about there
+     * being no managed children inside it.
      */
 
     if (masterPtr->slavePtr == NULL && masterPtr->flags & ALLOCED_MASTER) {
 	TkFreeGeometryMaster(masterPtr->tkwin, "grid");
 	masterPtr->flags &= ~ALLOCED_MASTER;
+	TkSendVirtualEvent(masterPtr->tkwin, "NoManagedChild", NULL);
     }
 
     return TCL_OK;