On 03/28/2013 05:56 PM, Graeme Geldenhuys wrote:
Hi,
I've just added TProgressBar support for LCL-fpGUI, but I find the
widgetset design extremely confusing.
For example, I implemented TFpGuiWSProgressBar.SetPosition() - the
component is painted on the form, but the position property was never
set. Adding a SendDebug() call inside TFpGuiWSProgressBar.SetPosition()
I noticed that it is _never_ called. Not at the creation of the form,
and not when you set the ProgressBar.Position property at runtime.
Everything seems to go via the ApplyUpdates() method. I could confirm
this inside the progressbar.inc file where TCustomProgressBar class is
implemented. So what is TWSProgressBar.SetPosition() then used for, and
when is it called?
I had a look at the LCL-Qt widgetset implementation for TProgressBar. I
can see code duplication (setting the Position information) in
ApplyUpdates and SetPosition() as well.
Yes, that's something pretty weird in TProgressBar implementation.I've
asked about it on mailing list few months ago afair, but no answer.
zeljko
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