CLR自定义菜单项（ToolStripItem）

新建ToolStripColor.h

让类ToolStripColor继承自ToolStripControlHost实现，则ToolStripColor的对象并可以作为一个MenuItem添加到一个菜单中了

示例代码如下（此代码是基于上一个随笔中自定义的颜色设置控件实现）：

#pragma once

#include < string >

namespace TestDIYMenuItem {

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
using namespace SelfColorControl;

/// <summary>
/// WinForm自定义菜单项：颜色设置菜单
/// </summary>
/// <remarks>
/// 基于自定义UserControl:SelfColorControl.dll
/// </remarks>
public ref class ToolStripColor : public System::Windows::Forms::ToolStripControlHost
{
public :
/// <summary>
/// 事件回调委托类型
/// </summary>
delegate void ValueChangedHandler( void );
/// <summary>
/// 时间回调句柄
/// </summary>
event ValueChangedHandler ^ pCallBack;

public :
ToolStripColor() : ToolStripControlHost(CreateControlInstance())
{
InitializeComponent();
}

ToolStripColor(std:: string name): ToolStripControlHost(CreateControlInstance())
{
this -> Name = " asdf " ;
InitializeComponent();
}

public :
/// <summary>
/// 获取当前值
/// </summary>
System::Drawing::Color GetValue()
{
return colorCtrl -> CurValue;
}

/// <summary>
/// 设置当前值
/// </summary>
void SetValue(System::Drawing::Color color)
{
colorCtrl -> CurValue = color;
}

private :
static SelfColorControl::ColorControl ^ colorCtrl = gcnew SelfColorControl::ColorControl();

static System::Windows::Forms::Control ^ CreateControlInstance()
{
colorCtrl -> AutoSize = false ;
return colorCtrl;
}

void InitializeComponent( void )
{
colorCtrl -> ValueChanged += gcnew ColorControl::ColorValueChangedHandler( this , & ToolStripColor::colorCtrl_ValueChanged);
this -> AutoSize = false ;
}

// <summary>
/// 手动添加，自定义控件SelfColorControl的ValueChanged响应函数
/// </summary>
void colorCtrl_ValueChanged(System::Object ^ object , System::EventArgs ^ e)
{
// 自定义事件回调
pCallBack();
}
};


}

这样定义的自定义菜单项使用起来比较简单：

//定义一个新的菜单项，TestDIYMenuItem是ToolStripColor的命名空间，如上述代码所示

private:TestDIYMenuItem::ToolStripColor^ toolStripColor;

//new一个菜单项

this->toolStripColor = (gcnew TestDIYMenuItem::ToolStripColor());

//将新建的颜色菜单项加入菜单对象

contextMenuStrip1->Items->Add(toolStripColor);

相关参考：http://blog.163.com/elgyin@126/blog/static/1894262020105290143261/