CGXComboBox::OnGetListboxRect
virtual CRect OnGetListboxRect(const CRect& rcCellRect);
rcCellRect
Points to the rectangle with the size of the drop-down list box.
Return Value
Returns the rectangle with the size of the drop-down list box.
Remarks
Called before the drop-down list box is made visible. Override this method for changing the default list box size (e.g., if you would like to have it wider than the default).
