Here's a pitfall I found when trying to gather information about controls on form from within the Init() method of one of the controls on that form...

When using CREATEOBJECT() and .Show() to show a form from a .vcx, if within the Init() event of one of the controls on the form you check the ControlCount property of the form, it will not show the same value as when the form is run from an .scx. This is because the controls have not yet been Added to the form. After they have all Init()ed, they are accessible. Be warned!