Kbase 34328: How To Check To See If A Child Window Still Exists
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
10/05/1998 |
|
Solution ID: P4328
GOAL:
How to check to see if a child window still exists
FACT(s) (Environment):
Windows 32 Intel
Windows NT 32 Intel/Windows 2000
FIX:
First, use the following code to run the child window:
DEFINE VARIABLE hChild AS HANDLE NO-UNDO.
DEFINE VARIABLE hChildUID AS INTEGER NO-UNDO.
RUN SomeChildWindow.w PERSISTENT SET hChild.
ASSIGN hChildUID = hChild:UNIQUE-ID.
Second, use the following code to check whether the child window still exists:
IF VALID-HANDLE(hChild) AND hChildUID = hChild:UNIQUE-ID THEN
/* child window still exists, do whatever you want to do */
ELSE
MESSAGE "Child Window is Gone" VIEW-AS ALERT-BOX.