Ganesh Ramasivan wrote:
>
> Hello,
>
> Here's my dumb program which is supposed to create a window and put a pixmap up
> as it's background.
>
> #include
> #include
> #include
> #include
>
> main(int argc, char *argv[])
> {
> Widget main_w;
> XtAppContext app;
> Widget top;
> int status;
> Pixmap pixmap;
> XpmAttributes attributes;
>
> attributes.valuemask = 0;
>
> /* create a simple hierarchy with a main window */
> top = XtAppInitialize(&app, "Bart", NULL, 0, &argc, argv,
> NULL, NULL, 0);
>
> main_w = XmCreateMainWindow (top, "main_window", NULL, 0);
>
> /* create a pixmap from the XPM file */
> status = XpmReadFileToPixmap(XtDisplay(top), XtWindow(main_w),
> "bart.xpm", &pixmap, NULL, &attributes);
> if (status != XpmSuccess)
> {
> fprintf(stderr, "XpmError: %s\n", XpmGetErrorString(status));
> exit(1);
> }
> else
> {
> XSetWindowBackgroundPixmap(XtDisplay(top), XtWindow(main_w), pixmap);
> }
>
> XtManageChild (main_w);
> XtRealizeWidget (top);
> XtAppMainLoop(app);
> }
>
> I can't understand why it does not work. I keep getting the following error:
>
> X Error of failed request: BadDrawable (invalid Pixmap or Window parameter)
> Major opcode of failed request: 53 (X_CreatePixmap)
> Resource id in failed request: 0x0
> Serial number of failed request: 99
> Current serial number in output stream: 118
>
> Any input appreciated,
>
> Ganesh
You must realize the main_w widget before you reference its window. As
your code is currently written, when you make the calls to
XpmReadFileToPixmap and XSetWindowBackgroundPixmap, XtWindow(main_w)
will return NULL since the window for that widget has not yet been
created. Place these calls AFTER XtRealize(top).
--
Fred L. Kleinschmidt
Boeing Associate Technical Fellow
Technical Architect, Common User Interface Services
M/S 2R-94 (206)544-5225