Hello,
Thank you for your answers.
I'm working on Windows 7 64Bit pro. Lazarus 1.0.10 r41613 FPC 2.6.2 i386-win32-win32/win64
All my cross development are done on a Symbol/Motorola MC3190 running under Windows Embedded (Windows Mobile 6.5.3).
I've a lot of those exceptions, just putting a simple TPageControl + tabsheets raize the problem, especialy when using Alignment...
I can produce example if needed !
Thank you