It works similar to TWinControl.KeyDown. 

First KeyDown fires OnKeyDown event . 

Then processes keystrokes

• VK_F4 with ssCtrl in Shift switches Active property to False
• VK_DELETE - deletes selected controls
• VK_INSERT - with ssCtrl do copying from buffer, with ssShift - pasting
• VK_DOWN, VK_UP, VK_LEFT, VK_RIGHT - do moving selected controls
• VK_ESCAPE - moves selection from component to its parent
• VK_TAB - moves selection to another component in its TabOrder sequences

Finally calls DsnManager.KeyDown procedure. 

See TWinControl.KeyDown for details.

TzCustomFormDesigner Methods