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Did you know that in any class derived from DropDownBase you can override the PreProcessDropButtonPaint and PostProcessDropButtonPaint to draw your own drop down button?
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PlusSuite is the ultimate suite of controls for .Net Framework
DropDownPopupBase
PlusSuite > Other > DropDownPopupBase
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Overview

DropDownPopupBase derives from DropDownBase and represents the main base class  for all drop-down controls in PlusSuite. Basically this class splits the control in two different entities: the BaseControl, which is the control that is always visible on the screen (for example a TextBox) and the PopupControl, which is the control that drops down. The control is extremly powerful as it can accept virtualy any .Net control as BaseControl or PopupControl. In PlusSuite, PlusComboBox, PlusDatePickerCombo and PlusColorPicker are derived from this class.

Features

  • Separates the visible control from the drop-down control
  • Allows full ownerdrawing
  • Supports hot-tracking
  • Supports Windows XP Themes
  • Smart Drop-down positioning
  • If needed the drop-down window doesn't steal focus from the main application window
  • Rich event model 
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