| Title: | DECWINDOWS 26-JAN-89 to 29-NOV-90 |
| Notice: | See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit |
| Moderator: | STAR::VATNE |
| Created: | Mon Oct 30 1989 |
| Last Modified: | Mon Dec 31 1990 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3726 |
| Total number of notes: | 19516 |
I'm having a weird problem with mapping and unmapping windows.
I have a widget called toplevel that is set by XtInitialize. I realize
it and call XtMainLoop. The windows pops up on the screen. So far, so
good.
My program is communicating asynchronously with another program that
tells it to unmap the window. My program called
XtUnmapWidget(toplevel), but nothing happens UNTIL AN EXPOSE EVENT
OCCURS ON THE MENUBAR!!! This seems really weird to me. When my
communication program asks my program to remap the window, (by calling
XtMapWidget), nothing happens.
Why does the unmapping not take place until the menubar gets an expose
event? I don't see what the two events have to do with each other...
What do I have to do to get my window to map and unmap under program
control?
T?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1899.1 | DWT not callable from AST level | DECWIN::KLEIN | Tue Dec 12 1989 15:05 | 5 | |
You must not call the toolkit from AST level. It sounds like this is your problem. You should use XtAddInput to take the AST and "reschedule" it at non-AST level. -steve- | |||||
| 1899.2 | Stuff must be sent to the server | MELTIN::dick | Gvriel::Schoeller | Tue Dec 12 1989 15:46 | 10 |
Even after you have made the change that Steve suggested, you will have a problem. The map or unmap requests put commands in the queue. If you do not return to XtMainLoop or call XFlush, these may not get sent to the server. In the case of the map request, you will also have to go off and field events (as been explained ad nauseum elsewhere) in order to get the expose on the newly mapped windows before drawing. Dick | |||||