On Tuesday 10 February 2009 15:08, Brad Campbell wrote: > G'day all, > > I've got an app where I'm doing some time critical serial processing. I > have 2 callbacks in the serial code that call back to methods in the form > to update a status bar and caption label. > > I used to update the label/status bar and call Application.ProcessMessages > so they would paint, but I discovered the indeterminacy in the other GUI > events queued would cause my serial latency to randomly blow out badly. > I've worked around this by doing.. > > StatusBar1.Repaint; > Label1.Repaint; > > rather than Application.ProcessMessages; > > On Win32 and GTK2/Linux this works perfectly, but on Carbon it won't > repaint anything until the application can service its message queue.
1. like dmitry says - Carbon/Cocoa & Qt on all platforms does not allow paintings outside of paint event. 2. Calling repaint is very expensive (CPU), try with YourControl.Invalidate; or YourControl.Update; zeljko _______________________________________________ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus