public static extern bool GetMonitorInfo( IntPtr hMonitor, ref MonitorInfo lpmi );
private void UpdateCurrentMonitor( Rect windowRect )
{
if( _currentMonitor == null ||
!_currentMonitor.MonitorArea.IntersectsWith( windowRect ) )
{
_currentMonitor = _desktopInfo.FindMonitor( windowRect );
}
}
private void OnDesktopChanged( object sender, EventArgs e )
{
if( !IsDockStateValidForMonitor( _currentState, _currentMonitor ) )
{
_currentMonitor = null;
}
if( _currentMonitor != null )
{
Rect windowRect = GetParentWindowRect();
windowRect.Location = CalculateParentDockedPosition( _currentState, windowRect.Location );
EnsureWindowRectIsInMonitor( ref windowRect, _currentMonitor );
_parent.Left = windowRect.X;
_parent.Top = windowRect.Y;
}
else
{
UpdateState( DockState.Floating );
MoveParentToPrimaryMonitor();
}
}
private bool IsDockStateValidForMonitor( DockState state, MonitorInfo monitor )
{
if( monitor == null ) return false;
if( monitor.IsStale ) return false;
switch( _currentState )
{
case DockState.LeftDock:
if( _currentMonitor.HasLeftTaskbar ) return false;
break;
case DockState.TopDock:
if( _currentMonitor.HasTopTaskbar ) return false;
break;
case DockState.RightDock:
if( _currentMonitor.HasRightTaskbar ) return false;
break;
case DockState.BottomDock:
if( _currentMonitor.HasBottomTaskbar ) return false;
break;
default:
break;
}
return true;
}
private void EnsureWindowRectIsInMonitor( ref Rect windowRect, MonitorInfo monitor )
{
if( windowRect.Left < monitor.MonitorArea.Left )
{
windowRect.X = monitor.MonitorArea.Left;
}
else if( windowRect.Right > monitor.MonitorArea.Right )
{
windowRect.X = monitor.MonitorArea.Right - windowRect.Width;
}
if( windowRect.Top < monitor.MonitorArea.Top )
{
windowRect.Y = monitor.MonitorArea.Top;
}
else if( windowRect.Bottom > monitor.MonitorArea.Bottom )
{
windowRect.Y = monitor.MonitorArea.Bottom - windowRect.Height;
}
}
public static extern bool GetMonitorInfo(IntPtr hMonitor, ref MonitorInfo lpmi);
