using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Example115_實現拖放操作
{
	/// <summary>
	/// Form1 的摘要說明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.RichTextBox richTextBox1;
		/// <summary>
		/// 必需的設計器變量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗體設計器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 調用后添加任何構造函數代碼
			//
		}

		/// <summary>
		/// 清理所有正在使用的資源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.SuspendLayout();
			// 
			// richTextBox1
			// 
			this.richTextBox1.AllowDrop = true;
			this.richTextBox1.Location = new System.Drawing.Point(8, 8);
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(280, 256);
			this.richTextBox1.TabIndex = 0;
			this.richTextBox1.Text = "richTextBox1";
			this.richTextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(
				this.richTextBox1_DragDrop);
			this.richTextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(
				this.richTextBox1_DragEnter);

			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.richTextBox1});
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 應用程序的主入口點。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
		private void richTextBox1_DragDrop(object sender,
			System.Windows.Forms.DragEventArgs e)
		{
			if (e.Data.GetDataPresent(DataFormats.Text))
			{	e.Effect=DragDropEffects.Copy;}
			else
			{e.Effect = DragDropEffects.None;}
		}	
		private void richTextBox1_DragEnter(object sender,
			System.Windows.Forms.DragEventArgs e)
		{
			if (e.Data.GetDataPresent(DataFormats.Text))
			{	e.Effect=DragDropEffects.Copy;}
			else
			{e.Effect = DragDropEffects.None;}
		}	

	}
}