walter (Walter Steinemann) (04/25/91)
Dear widget-wizards,
My application has a label widget which is used to show the user the
current status of the application. Most of the time it works fine,
using XtSetArg() and XtSetValues to set the label's labelString to the
desired value. The application has a secondary event loop which is
waiting for input on a socket, but handling X events if they come in
while it is waiting. When input does come in on the socket the status
label gets changed (same code as before) then the application returns
to its wait loop, but the display does NOT always get updated.
Sometimes the new string will flash on the screen, then disappear;
other times it just never does appear. I have tried XFlush after the
XtSetValues but it doesn't help. I never set the value to the null
string. I presume that XtSetValues will generate an expose event for
itself, or at least call the widgets expose function which should
cause the new value to be displayed. Am I wrong? Do I need to call
some other function to force a redraw?
Thanks for your help,
-- WalteR --
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Walter R. Steinemann HYPERCUBE, INC.
#7-419 Phillip Street
Phone: (519) 725-4040 Waterloo, Ontario