protected override void OnMouseUp(MouseEventArgs e)
{
if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
{
LeftButton = false;
}
if ((e.Button & MouseButtons.Right) == MouseButtons.Right)
{
RightButton = false;
}
SuspendLayout();
_layoutManager.MouseUp(e);
ResumeLayout();
//显示上下文菜单
bool rightButton = (e.Button & MouseButtons.Right) == MouseButtons.Right;
if (rightButton && this.ContextMenuStrip != null)
{
this.ContextMenuStrip.Show(this.PointToScreen(e.Location));
}
base.OnMouseUp(e);
}
