给C#的treeview控件的部分节点添加checkbox

一、先初始化treeview

this.treeView1.CheckBoxes = true;

this.treeView1.ShowLines = false;

this.treeView1.DrawMode = System.Windows.Forms.TreeViewDrawMode.OwnerDrawAll;

this.treeView1.DrawNode += new System.Windows.Forms.DrawTreeNodeEventHandler(this.treeView_DrawNode);
二、实现委托事件

private void treeView_DrawNode(object sender, DrawTreeNodeEventArgs e)
{
//隐藏节点前的checkbox
if (e.Node.ImageIndex==6)
HideCheckBox(this.treeView1, e.Node);
e.DrawDefault = true;
}

三、隐藏的实现

private const int TVIF_STATE = 0x8;

        private const int TVIS_STATEIMAGEMASK = 0xF000;

        private const int TV_FIRST = 0x1100;

        private const int TVM_SETITEM = TV_FIRST + 63;

        private void HideCheckBox(TreeView tvw, TreeNode node)

        {



            TVITEM tvi = new TVITEM();



            tvi.hItem = node.Handle;



            tvi.mask = TVIF_STATE;



            tvi.stateMask = TVIS_STATEIMAGEMASK;



            tvi.state = 0;



            SendMessage(tvw.Handle, TVM_SETITEM,IntPtr.Zero, ref tvi);



        }



        [StructLayout(LayoutKind.Sequential, Pack = 8, CharSet = CharSet.Auto)]



        private struct TVITEM

        {

            public int mask;

            public IntPtr hItem;

            public int state;

            public int stateMask;

            [MarshalAs(UnmanagedType.LPTStr)]

            public string lpszText;

            public int cchTextMax;

            public int iImage;

            public int iSelectedImage; public int cChildren; public IntPtr lParam;

        }



        [DllImport("user32.dll", CharSet = CharSet.Auto)]



        private static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, ref TVITEM lParam);
将上面的实用工具类TreeViewUtility中，以方便使用，具体如下：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



using System.Windows.Forms;

using System.Runtime.InteropServices;



namespace SituationProcess//名称空间根据需要自行修改

{

    /// <summary>

    /// 给treeview控件的部分节点添加checkbox

    /// </summary>

    class TreeViewUtility

    {

        TreeView tvTreeView;



        public TreeViewUtility(TreeView treeView)

        {

            this.tvTreeView = treeView;

        }



        public void InitializeTreeView()

        {

            this.tvTreeView.CheckBoxes = true;

            this.tvTreeView.ShowLines = true;

            this.tvTreeView.DrawMode = System.Windows.Forms.TreeViewDrawMode.OwnerDrawAll;

            this.tvTreeView.DrawNode += new System.Windows.Forms.DrawTreeNodeEventHandler(tvTreeView_DrawNode);

        }



        private void tvTreeView_DrawNode(object sender, DrawTreeNodeEventArgs e)

        {

            //隐藏节点前的checkbox

            if (e.Node.Text == "数据集集合")//隐藏文本名称为“数据集集合”的TreeView控件节点

                HideCheckBox(this.tvTreeView, e.Node);

            e.DrawDefault = true;

        }



        private const int TVIF_STATE = 0x8;

        private const int TVIS_STATEIMAGEMASK = 0xF000;

        private const int TV_FIRST = 0x1100;

        private const int TVM_SETITEM = TV_FIRST + 63;

        private void HideCheckBox(TreeView tvw, TreeNode node)

        {

            TVITEM tvi = new TVITEM();

            tvi.hItem = node.Handle;

            tvi.mask = TVIF_STATE;

            tvi.stateMask = TVIS_STATEIMAGEMASK;

            tvi.state = 0;

            SendMessage(tvw.Handle, TVM_SETITEM, IntPtr.Zero, ref tvi);

        }



        [StructLayout(LayoutKind.Sequential, Pack = 8, CharSet = CharSet.Auto)]

        private struct TVITEM

        {

            public int mask;

            public IntPtr hItem;

            public int state;

            public int stateMask;

            [MarshalAs(UnmanagedType.LPTStr)]

            public string lpszText;

            public int cchTextMax;

            public int iImage;

            public int iSelectedImage; public int cChildren; public IntPtr lParam;

        }



        [DllImport("user32.dll", CharSet = CharSet.Auto)]

        private static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, ref TVITEM lParam);

    }

}