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：
{
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
}
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 = ;
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
}
}