Quote Originally Posted by Clootie
First of all it's driver related issue.
But sure you can minimize this side effect by maximazion your window and handling WM_ERASEBACKGROUND message.
DXdraw has a doSelectDriver option. Do you know if this should be set to TRUE?

And what about DirectX7Mode & do3D? Any idea what they are for? Surely do3D is not valid for DelphiX?