TCheckListBox.Style property

Declaration

property Style:;

Description

Style is a TListBoxStyle property which controls the content and appearance of the items drawn on the list box control. The property value (along with others) is used to set parameter flags when the control is created. The default value for the property is lbStandard, and causes the appearance and text height native to the widgetset to be used to draw the Items defined for the control.

lbOwnerDrawFixed and lbOwnerDrawVariable cause the control to use either the OnDrawItem event handler or an internal drawing routine to render the Items on the list box control. lbOwnerDrawFixed indicates that all items have the fixed height specified in ItemHeight. lbOwnerDrawVariable indicates that any given item has the height determined by the OnMeasureItem event handler.

lbVirtual indicates the the control is in "virtual mode" where the items displayed on the control are provided by the OnData, OnDataEvent, or OnDataFind event handlers. Items is not used to store the strings displayed on the control. The value in Style is used when a new value is assigned to the Count property. An exception is raised if the control is not in "virtual mode" (Style = lbVirtual).

This description is the one of StdCtrls.TCustomListBox.Style.

See also

• Count
• ItemHeight
• Items
• DrawItem
• MeasureItem
• OnDrawItem
• OnMeasureItem
• TListBoxStyle