Paint TStringGrid cells from outside OnDrawCell event, is it possible?

Question

Is there any way to paint specific cells on Delphi's TStringGrid without using the OnDrawCell event, for instance if I click a button the specified cells will be painted depending on their content.

Answer 1

To keep the painting persistent, the way you should do this is as follows:

• in the button OnClick event handler, set some data that distinguishes these cells
• in the same event handler, invalidate the painting area of cells
• in OnDrawCell event handler do a normal painting for the cells not distinguished
• in the same event handler, paint your distinguished cells differently

--jeroen