Source/PopupContainerControl.cs

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using System;
using System.Windows.Forms;
using System.Drawing;
namespace DevComponents.DotNetBar
{
	/// <summary>
	/// Summary description for PopupContainer.
	/// </summary>
	[System.ComponentModel.ToolboxItem(false),System.ComponentModel.DesignTimeVisible(false)]
	public class PopupContainerControl:UserControl
	{
		private BaseItem m_Parent=null;
		private bool m_DesignMode=false;
		private object m_Owner;
		private Point m_ParentScreenPos=Point.Empty;
		private PopupShadow m_DropShadow=null;

		public PopupContainerControl()
		{
			this.Font=System.Windows.Forms.SystemInformation.MenuFont.Clone() as Font;
			this.SetStyle(ControlStyles.Selectable,false);
			//this.ControlBox=false;
			//this.MinimizeBox=false;
			//this.MaximizeBox=false;
			//this.Text="";
		}

		protected override void Dispose(bool disposing)
		{
			if(m_DropShadow!=null)
			{
				m_DropShadow.Hide();
				m_DropShadow.Dispose();
				m_DropShadow=null;
			}
			base.Dispose(disposing);
		}

		protected override CreateParams CreateParams
		{
			get
			{
				CreateParams p=base.CreateParams;
				p.Style=unchecked((int)(NativeFunctions.WS_POPUP | NativeFunctions.WS_CLIPSIBLINGS | NativeFunctions.WS_CLIPCHILDREN));
				p.ExStyle=(int)(NativeFunctions.WS_EX_TOPMOST | NativeFunctions.WS_EX_TOOLWINDOW);
				p.Caption="";
				return p;
			}
		}

		protected override void WndProc(ref Message m)
		{
			if(m.Msg==NativeFunctions.WM_MOUSEACTIVATE)
			{
				m.Result=new System.IntPtr(NativeFunctions.MA_NOACTIVATE);
				return;
			}
			base.WndProc(ref m);
		}