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Renders scroll information invalid for the control.
Source position: forms.pp line 142
protected procedure TControlScrollBar.InvalidateScrollInfo; |
InvalidateScrollInfo is used to mark the current TScrollInfo in the control as invalid. This occurs when a new value is assigned to the Position property, and when ScrollHandler applies position information found in TLMScroll messages. Calling InvalidateScrollInfo results in TScrollInfo being updated and applied for scrolling window controls in the UpdateScrollBar method.
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Position of the scroll bar slider in the range 0..Range-Page. |
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Updates the state and position for the scroll bar in the associated Control. |
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Handler for scroll bar movement messages. |
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