advr.hlp (Topic list)
Tab Order Details
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 Tab Order Details
 
 ■ When you change a control's tab order position, Visual Basic automatically
   renumbers the tab order positions of other controls to reflect insertions
   and deletions.
 
 ■ A control whose TabStop property has been set to False (0) still maintains
   its position in the actual tab order as set by the TabIndex property, even
   though the control is skipped when you cycle through controls with the Tab
   key.
 
 ■ All controls except menus and timers are included in the tab order.
 
 ■ At run time, invisible or disabled controls and controls that cannot
   receive the focus (frames and labels) remain in the tab order, but they
   are bypassed during tabbing. See: Focus Definition
 
 ■ A form cannot get the focus if any of its children are able to receive
   the focus. In contrast, a picture box can receive the focus even when it
   contains child controls. See: Parent and Child Relationships
 
 ■ If you have specified an access key for a frame or label and press that
   access key, the focus moves to the next control in the tab order that can
   receive the focus. See: Access Keys