Tips for APR Dialogs users.

1. Do not use in run-time CustDlgParams.XXXForm properties in Form.OnCreate event handler to specify extended parts of your dialog if the following condition exists:

    - Your form where you place ApXXXDialog (Main form) is before Custom, Left, Right, Buttom or Top forms in Auto-create forms list (Project->Options menu, Forms page). You can avoid this restriction if you place Main form below other dialog forms in this list. But it's can be difficult if this Main form is the main form of your application, sorry.