Hello Lazarus-List, Saturday, February 6, 2010, 10:39:45 AM, you wrote: PI> Ok. Open lcl\interfaces\gtk\gtkcallback.inc search for LM_ERASEBKGND, PI> comment then line: PI> if (TObject(Target) is TCustomControl) PI> and recompiler the LCL. Test after that - does this solves your problem? I'll check it this night... Thank you. -- Best regards, JoshyFun