re xwindows always opaque hess swt informatik uni hamburg de writes i wonder if it is possible for a parent window to paint over the area of its childs if it is not then how could it be possible to implement a rubberband across multiple xwindows to select the objects that are displayed one in each window use a gc with the subwindow mode attribute set to includeinferiors the default is clipbychildren however beware if any of the children are of a different depth to the parent the semantics of this are undefined by the protocol gerard o driscoll gerard odriscoll dps co uk du pont pixel systems ltd
