/// <summary>
/// Gets the mouse lightweight control that is located at the specified client point.
/// </summary>
/// <param name="point">A point that contains the coordinates where you want to look for a
/// control. Coordinates are expressed relative to the upper-left corner of the control's
/// client area.</param>
/// <returns>The BehaviorControl at the specified client point. If there is no
/// BehaviorControl at the specified client point, the GetMouseBehaviorControlAtClientPoint
/// method returns a null reference.</returns>
private BehaviorControl GetMouseBehaviorControlAtClientPoint(Point point)
{
// Map the client point to a virtual client point.
point = ClientPointToVirtualClientPoint(point);
// Enumerate the lightweight controls, in Z order, to locate one at the virtual point.
for (int index = Controls.Count - 1; index >= 0; index--)
{
// Access the lightweight control.
BehaviorControl BehaviorControl = Controls[index];
// If the lightweight control is visible, and the virtual client point is inside
// it, translate the virtual client point to be relative to the location of the
// lightweight control and recursively ask the lightweight control to return the
// lightweight control at the virtual client point. This will find the innermost
// lightweight control, at the top of the Z order, that contains the virual client
// point.
if (BehaviorControl.Visible && BehaviorControl.VirtualBounds.Contains(point))
{
// Translate the virtual point to be relative to the location of the lightweight control.
point.Offset(BehaviorControl.VirtualLocation.X * -1, BehaviorControl.VirtualLocation.Y * -1);
// Recursively get the mouse lightweight control at the translated point.
return(BehaviorControl.GetBehaviorControlAtPoint(point));
}
}
// The client point is not inside any lightweight control.
return(null);
}
/// <summary>
/// Gets the Behavior control that is located at the specified point.
/// </summary>
/// <param name="point">A Point that contains the coordinates where you want to look for a control.
/// Coordinates are expressed relative to the upper-left corner of the control's client area.</param>
/// <returns>Behavior control at the specified point.</returns>
internal BehaviorControl GetBehaviorControlAtPoint(Point point)
{
// Enumerate the Behavior controls, in Z order, to locate one at the virtual point.
for (int index = Controls.Count - 1; index >= 0; index--)
{
// Access the Behavior control.
BehaviorControl BehaviorControl = Controls[index];
// If the Behavior control is visible, and the point is within its virtual
// bounds, then recursively search for the right control.
if (BehaviorControl.Visible && BehaviorControl.VirtualBounds.Contains(point))
{
// Translate the point to be relative to the location of the Behavior control.
point.Offset(BehaviorControl.VirtualLocation.X * -1, BehaviorControl.VirtualLocation.Y * -1);
// Recursively search for the right Behavior control.
return(BehaviorControl.GetBehaviorControlAtPoint(point));
}
}
// The point is not inside a child Behavior control of this Behavior control,
// so it's inside this Behavior control.
return(this);
}