[Lazarus] Background colours etc.

[Felipe Monteiro de Carvalho]

There are 2 options:

1-> The default form color is very well defined, just use
ColorToRGB(clForm) to get it

or

2-> You can also set a region for your TImage which matches the star
shape, which will make the control non-rectangular. Use
TWinControl.SetShape(Region). Use LCLIntf functions to create the
region. setShape does not work before the form has been shown (so
OnShow event) in LCL-Gtk2, because as always Gtk2 has issues. To make
a star try something like CreatePolygonalRgn (or similar name)

-- 
Felipe Monteiro de Carvalho