RAD Studio VCL Reference
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TScrollBox.CreateParams Method
TScrollBox Class | TScrollBox Members | Forms Namespace | Description | See Also
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Initializes the window creation parameters so that the entire window is not redrawn when the width or height of the client area changes.

Pascal
procedure CreateParams(var Params: TCreateParams); override;
C++
virtual __fastcall CreateParams(TCreateParams Params);
Description

The CreateWnd method calls CreateParams to initialize the parameters it passes to CreateWindowHandle. CreateParams calls the inherited method and uses that Window class style, removing the CS_HREDRAW and CS_VREDRAW styles from it. 

By removing these styles the scrolling windowed control will only redraw the invalidated regions, not the entire window. 

 

See Also
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