RAD Studio VCL Reference
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Calls other category panel methods to display the entire header of the category panel.
procedure DrawHeader; virtual; overload;
virtual __fastcall DrawHeader();
This overload of DrawHeader uses the device context of the window and sets the rectangles used to display the text and glyphs of the category panel. DrawHeader then displays the header background, the header chevron and the header caption. If the category panel is collapsed, DrawHeader displays the category panel in the collapsed state.
DrawHeader is a protected method and so can only be called in the implementation of an extended class of TCustomCategoryPanel.
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