/// <summary>
/// Show to pop up a new context menu. Parent is normally displaycontrol.
/// You can double call and the previous one is closed.
/// It always makes sure right/bottom is within parent.
/// </summary>
/// <param name="parent">Parent of menu to attach to. Normally its the control display top level control</param>
/// <param name="location">Location to place the menu at</param>
/// <param name="changewidthifrequired">If set, it will reflow the menu to not exceed parent, making the window wider if required, </param>
/// <param name="opentag">Tag to pass to Opening callback</param>
public void Show(GLBaseControl parent, Point location, bool changewidthifrequired = false, Object opentag = null)
{
//System.Diagnostics.Debug.WriteLine("Open as context menu " + Name);
Detach(this);
openedascontextmenu = true;
Visible = true;
Location = location;
AutoSize = true;
TopMost = true;
KeepWithinParent = changewidthifrequired;
parent.Add(this);
int overflowy = this.Bottom - parent.Bottom;
if (overflowy > 0)
{
Top -= overflowy;
}
int overflowx = this.Right - parent.Right;
if (overflowx > 0)
{
Left -= overflowx;
}
SetFocus();
Opening?.Invoke(this, opentag);
}