Zitat von "A.J. Venter" <[EMAIL PROTECTED]>: > > DoubleBuffered is a hint for the interface. > > The gtk2 intf always paints double buffered for each gdkwindow. > > That means paint events are double buffered, other painting not. The > > gtk1 intf has almost no doublebuffering. I'm not sure about > > the other interfaces. > Aaah okay, that makes sense. > > > > I only did a small test: The gtk intf only paints once per Invalidate > > and there I see no flicker at all. That's because the bitbtn glyph > > handle is a memory handle and not an image on the screen. Maybe the > > win32 intf is creating a screen handle? That would explain the > > flickering. > This is a GTK1 app. > The catch is that if I don't call invalidate, the buttons go entirely > blank instead of merely being grayed out, this includes the captions. > If I DO call invalidate, I end up with a whole LOT of repaints all the > time - which is... well ugly to say the least. > > I am still not sure how best to approach this. Shouldn't the buttons > remain in their last state, repainted when "damaged" until such time > as they are changed ? I'm not even moving anything here just painting > some info onto SOME of the buttons and updating those periodically > while setting the others disabled until such time as they are in use. > > And it's the DISABLED buttons which are giving me grief, the enabled > once have a very slight flicker but it's actually almost nothing > (again I don't know why that would be).
I can reproduce the issue: gtk1 with enabled=false TBitBtn. I wonder, why only the flickering is only visible with a disabled bitbtn ... Mattias > -- > A.J. Venter > CEO - OutKast Solutions C.C. > http://www.outkastsolutions.co.za > Cell: +27 83 455 9978 > Fax: +27 21 413 2800 > Office: +27 21 591 6766 > > _________________________________________________________________ > To unsubscribe: mail [EMAIL PROTECTED] with > "unsubscribe" as the Subject > archives at http://www.lazarus.freepascal.org/mailarchives > ------------------ Powered by NetMail _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
