Hello, Unlike NAES and AES 4.1, when we set a toolbar( with the "mt_wind_set" function) while the window is open, then the window is not updated. Even if after, we send a WM_REDRAW message, nothing happen. Only a message like WM_SIZED sets the toolbar and updates correctly the window. I don't know if Odd is still the XAAES maintainer but can he( or someone else) fix the problem ? Thank you. -- Zorro