[Octave-bug-tracker] [bug #55418] Speed issue with uicontrols

[Pantxo Diribarne]

Follow-up Comment #3, bug #55418 (project octave):

The main problem is that some properties rely on the the widget being actually
built to be correct. Lets take an example: suppose the extent property of
uicontrol objects would work properly :-), i.e. computed and set from the GUI
thread once the string is parsed and displayed by Qt. 


h = uicontrol ("style", "text", "My string is long and I would lke to know if
it fits in one line");
ext = get (h, "extent");


If I wait for a drawnow before creating the uicontrol, then ext will be wrong
since the widget has not been created at the time the "extent" is queried. 

This problem is tricky and I'll take a look at it once Octave 5 is released. 


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