constants DropDownWidthType
The DropDownWidthType expression specifies the width of the drop down portion of an editor. The DropDownAutoWidth property specifies the width of the drop down portion of the editor. The DropDownMinWidth property specifies the minimum width for the drop down portion.

NameValueDescription
exDropDownAutoWidth-1 The drop down width is automatically computed to let all predefined items in the editor fi the drop down portion.
exDropDownEditorWidth0 The width of the drop down portion of the editor is specified by the width of the cell that holds the editor.
exDropDownAutoEditorWidth1 The width of the drop down portion of the editor is specified by the width of the cell that holds the editor. The width of the drop down can't be less than the width required to let all predefined items being visible. The width of the drop down portion is always greater than the DropDownMinWidth value.