向ArcGIS的ToolBarControl中添加任意的windows控件的方法

概要：在使用ArcEngine开发中，给ToolbarControl添加按钮形式的命令项相信大家都很熟悉了，因为网上的例子很多。但这种使用click调用功能的方式只能满足大部分用户在体验方面的需求，除此之外用户很可能要求你在工具条中增加类似文本框,单选框、选择面板,combobox等windows控件，今天有个同事问我这个问题就在这里做一个实例。供大家参考。

具体实现：

  1 知识整备

 (1 )其实要实现这个效果很简单，只要大家了解Arcgis中的IToolControl接口的使用方法，就不难实现。

   IToolControl 这个接口有只有简单的三个方法：

 

hwnd：是个只读属性，用于给调用者返回控件 句柄。

OnDrop：是一个方法，用于调用者验证当前控件是否可拖动。

OnFocus:是一个方法，用于调用通知当前项，你已经聚焦。

(2)除了了解IToolCotrol接口之外，大家还必须具备知道如何创建Arcgis 命令插件的知识，以及如何调用插件的方法。

 

2 实现

   以一个简单Combobox为例：

    public sealed class Command1 : BaseCommand, IToolControl
    {
 

        private int _handle = 0;
        private ICompletionNotify _CompNotify;
        private System.Windows.Forms.ComboBox comboBox = new System.Windows.Forms.ComboBox();
        private IHookHelper m_hookHelper = null;
        public Command1()
        {
            this._handle = comboBox.Handle.ToInt32();
            comboBox.Items.Add("大家好才是真的好1");
            comboBox.Items.Add("大家好才是真的好1");
            comboBox.Items.Add("大家好才是真的好1");
        }

        #region Overriden Class Methods

        /// <summary>
        /// Occurs when this command is created
        /// </summary>
        /// <param name="hook">Instance of the application</param>
        public override void OnCreate(object hook)
        {
            if (hook == null)
                return;

            try
            {
                m_hookHelper = new HookHelperClass();
                m_hookHelper.Hook = hook;
                if (m_hookHelper.ActiveView == null)
                    m_hookHelper = null;
            }
            catch
            {
                m_hookHelper = null;
            }

            if (m_hookHelper == null)
                base.m_enabled = false;
            else
                base.m_enabled = true;

            // TODO:  Add other initialization code
        }

        /// <summary>
        /// Occurs when this command is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add Command1.OnClick implementation
        }

        #endregion

        #region IToolControl 成员

        public bool OnDrop(esriCmdBarType barType)
        {
            if (barType == esriCmdBarType.esriCmdBarTypeToolbar)
            {
                return true;
            }
            else return false;
        }

        public void OnFocus(ICompletionNotify complete)
        {
            _CompNotify = complete;
        }

        public int hWnd
        {
            get
            {
                return _handle;
            }
        }

        #endregion
    }

3 实现效果

 

照着这个实例可以添加，其它的windows控件

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.SystemUI;

namespace AddCustomControlToToolbar
{
    /// <summary>
    /// Command that works in ArcMap/Map/PageLayout
    /// </summary>
    [Guid("7e8238b9-b38c-417c-894f-34ca9d99b634")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("AddCustomControlToToolbar.Command1")]
    public sealed class Command1 : BaseCommand, IToolControl
    {
        #region COM Registration Function(s)
        [ComRegisterFunction()]
        [ComVisible(false)]
        static void RegisterFunction(Type registerType)
        {
            // Required for ArcGIS Component Category Registrar support
            ArcGISCategoryRegistration(registerType);

            //
            // TODO: Add any COM registration code here
            //
        }

        [ComUnregisterFunction()]
        [ComVisible(false)]
        static void UnregisterFunction(Type registerType)
        {
            // Required for ArcGIS Component Category Registrar support
            ArcGISCategoryUnregistration(registerType);

            //
            // TODO: Add any COM unregistration code here
            //
        }

        #region ArcGIS Component Category Registrar generated code
        /// <summary>
        /// Required method for ArcGIS Component Category registration -
        /// Do not modify the contents of this method with the code editor.
        /// </summary>
        private static void ArcGISCategoryRegistration(Type registerType)
        {
            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
            MxCommands.Register(regKey);
            ControlsCommands.Register(regKey);
        }
        /// <summary>
        /// Required method for ArcGIS Component Category unregistration -
        /// Do not modify the contents of this method with the code editor.
        /// </summary>
        private static void ArcGISCategoryUnregistration(Type registerType)
        {
            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
            MxCommands.Unregister(regKey);
            ControlsCommands.Unregister(regKey);
        }

        #endregion
        #endregion

        private int _handle = 0;
        private ICompletionNotify _CompNotify;
        private System.Windows.Forms.ComboBox comboBox = new System.Windows.Forms.ComboBox();
        private IHookHelper m_hookHelper = null;
        public Command1()
        {
            this._handle = comboBox.Handle.ToInt32();
            comboBox.Items.Add("大家好才是真的好1");
            comboBox.Items.Add("大家好才是真的好1");
            comboBox.Items.Add("大家好才是真的好1");
        }

        #region Overriden Class Methods

        /// <summary>
        /// Occurs when this command is created
        /// </summary>
        /// <param name="hook">Instance of the application</param>
        public override void OnCreate(object hook)
        {
            if (hook == null)
                return;

            try
            {
                m_hookHelper = new HookHelperClass();
                m_hookHelper.Hook = hook;
                if (m_hookHelper.ActiveView == null)
                    m_hookHelper = null;
            }
            catch
            {
                m_hookHelper = null;
            }

            if (m_hookHelper == null)
                base.m_enabled = false;
            else
                base.m_enabled = true;

            // TODO:  Add other initialization code
        }

        /// <summary>
        /// Occurs when this command is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add Command1.OnClick implementation
        }

        #endregion

        #region IToolControl 成员

        public bool OnDrop(esriCmdBarType barType)
        {
            if (barType == esriCmdBarType.esriCmdBarTypeToolbar)
            {
                return true;
            }
            else return false;
        }

        public void OnFocus(ICompletionNotify complete)
        {
            _CompNotify = complete;
        }

        public int hWnd
        {
            get
            {
                return _handle;
            }
        }

        #endregion
    }
}