[Lazarus] lazcontrols filters

[Ondrej Pokorny]

On 09.10.2015 19:38, Bart wrote:
> You're right. And if OwnerDrawing is False then everything you write 
> tothe cnavs gets erased whenever the control paints itself. So, maybe 
> not the way to go.

True.

I was able to paint custom shapes on TEdit on Windows with this 
approach: 
http://stackoverflow.com/questions/9758016/how-do-i-custom-draw-of-tedit-control-text 
. It works well.

But it fails on Linux/Gtk2. The edit control is always painted after my 
paint procedure, overpainting everything except a tiny space between 
bounds and the edit.

But if we assume that it is possible in TComboBox with OwnerDraw, there 
must be a way how to do it even on Gtk2. Or is OwnerDraw linked with 
some Gtk2-ComboBox property?

Ondrej