//VisualStudio2005 C# を使用してます
 
//やりたいこと
//フォームのbutton1から　クラスaの関数bを呼ぶ
//クラスaの関数bで　スレッドcを行う
//スレッドcの終了時に　フォームの関数dを呼びたい
//フォームの関数dで button1.text="e"; としたい。(スレッドcの結果を表示)
 
//困っていること
//button1.text="e"; とするときエラーが出る
//別スレッドからコントロールを操作できないらしい
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
 
namespace app2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        a aa=new a(); //クラスa
 
        private void button1_Click(object sender, EventArgs e)
        {
            a.delegate_dd return_dd = new a.delegate_dd(d); //終了時に呼ばれるメソッド
            aa.b(return_dd);
        }
 
        //終了時に呼ばれるメソッド
        void d()
        {
            System.Diagnostics.Debug.WriteLine("デバグ eee");
            button1.Text = "ee";    //エラー：有効ではないスレッド間の操作: コントロールが作成されたスレッド以外のスレッドからコントロール 'button1' がアクセスされました。
        }
    }
 
    class a
    {
        public delegate void delegate_dd();
        delegate_dd break_call_dd;
 
        public void b(delegate_dd break_call_para)
        {
            break_call_dd = break_call_para;    //処理が終わった時に呼ぶメソッド
            //メソッドを別のスレッドで実行する
            System.Threading.Thread cc = new System.Threading.Thread(new System.Threading.ThreadStart(c));
            cc.Start(); //スレッドを開始する
        }
 
        public void c()
        {
            System.Threading.Thread.Sleep(1000);
            break_call_dd();    //呼び出し元で指定されたメソッドを呼ぶ
            //Invoke(break_call_dd());  //エラー回避で元の基本スレッドで実行したい
        }
    }
}

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