class DockWindow
{
public:
DockWindow()
: dockWin(0),dockFor(0)
{}
DockWindow( WId w )
: dockWin(w),dockFor(0)
{}
DockWindow( WId w, WId wf )
: dockWin(w),dockFor(wf)
{}
bool operator==( const DockWindow& other )
{ return dockWin == other.dockWin; }
WId dockWin;
WId dockFor;
};