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From: pasturel@sctc.com (Pierre Pasturel)
Newsgroups: comp.windows.x.motif
Subject: LabelGadget problems
Summary: problem with LabelGadget
Keywords: LabelGadget
Message-ID: <1990Nov9.174932.7131@sctc.com>
Date: 9 Nov 90 17:49:32 GMT
Distribution: comp.windows.x.motif
Organization: Secure Computing Technology Corporation
Lines: 44


I have a call back that looks like this:

Callback()
        n = 0;
        label_string = XmStringCreateLtoR (".. processing", charset);
        XtSetArg (args[n], XmNlabelString, label_string); n++;
        XtSetValues( prompt_display, args, n);
        XFlush(display_ptr);

        ... processing stuff (takes a few seconds to execute)

        n = 0;        
        label_string = XmStringCreateLtoR (" finished processing", charset);
        XtSetArg (args[n], XmNlabelString, label_string); n++;
        XtSetValues( prompt_display, args, n);
        XFlush(display_ptr);

end of callback.


 where prompt_display is a LabelGadget widget.


The problem that I'm having is that the label becomes blank after
the first XtSetValues, and it doesn't get updated until after
the callback finishes executing, by which time it comes up with
"finished processing" from the second setting of the labelString.


I tried using XSync(display_ptr, false) instead of XFlush(), but that
didn't work either.

I also tried creating prompt_display as a Label widget and that didn't
work either.

I finally used Text widgets instead of LabelGadgets and they work fine (ie they
update their XmNvalue ok), but I really want to use labels instead.

Anyone else have this problem or have any suggestions?
I'm using motif 1.0.

Pierre
pasturel@sctc.com