A new TForm.OnActiveControlChanged event?
lazarus / 31-LCL

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Avishai · 2011-08-05 07:04

I have a need to do some processing when each control gets focus and
before any key is pressed.  I tried setting TForm.Keypreview:= True
and using TForm.OnKeyDown, TForm.OnKeyPressed and TForm.OnKeyUp but
all of these are too late.  There is a property TForm.ActiveControl,
but I can not find any event that allows me to see when this changes. 
It would be nice if there was a published event
TForm.OnActiveControlChanged, but there isn't.  Right now, I have to
do this through the OnEnter event for every control. This is not very
efficient. Any suggestions?

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Elmug · 2011-08-05 07:13

I wonder if OnMouseEnter might do the trick?