The Height and Width properties determine an object's size, while the Left
and Top properties determine its position within its container object (Form, Frame,
The unit of measure for these four properties
is the unit of measure given by the ScaleMode
property of the container. The default unit
is the twip (twentieth of a point), but it may
be different depending on whether or not you
change the container's ScaleMode.
You can change each of these properties at
runtime in your code, and you can also use the
control's Move method to change a control's
size and position.
TabIndex and TabStop
The TabIndex property determines the order
in which controls on a form get focus when the
user presses the Tab key. Note that Labels have
a TabIndex property even though they can't
The TabStop property lets you specify whether
or not a user can use the Tab key to navigate
to the control. Its default value is True. If
you set TabStop to False, users will bypass
the control as they cycle through the TabIndex
order when they press the Tab key.
NOTE : The TabStop Property Only Controls Tab
Key Navigation. Remember the TabStop property only controls user navigation with
the Tab key. It says nothing about whether the user can set focus to the control
in other ways (such as with the mouse or with access keys).
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