repos_ecs/其他2015后/光盘刻录类/Nero 1.08SDK与例子/NeroSDK-1.08/NeroCOM/Samples/NeroFiddlesCOM.NET/Erase.cs

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using NEROLib;

namespace NeroFiddlesCOM.NET
{
	/// <summary>
	/// Summary description for Erase.
	/// </summary>
	public class EraseForm : System.Windows.Forms.Form
	{
		private NeroDrive m_drive;

		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.ComboBox c_EraseMode;
		private System.Windows.Forms.TextBox c_Device;
		private System.Windows.Forms.Label label8;
		private System.Windows.Forms.Button c_Erase;
		private System.Windows.Forms.Button c_Cancel;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox c_ErasingTime;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		private ControlEnabler m_controlEnabler;

		public EraseForm(NeroDrive drive)
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			m_controlEnabler = new ControlEnabler (this);
			m_drive = drive;
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.c_EraseMode = new System.Windows.Forms.ComboBox();
			this.c_Device = new System.Windows.Forms.TextBox();
			this.label8 = new System.Windows.Forms.Label();
			this.c_Erase = new System.Windows.Forms.Button();
			this.c_Cancel = new System.Windows.Forms.Button();
			this.label2 = new System.Windows.Forms.Label();
			this.c_ErasingTime = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(8, 40);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(72, 16);
			this.label1.TabIndex = 0;
			this.label1.Text = "Erase mode:";
			// 
			// c_EraseMode
			// 
			this.c_EraseMode.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.c_EraseMode.Items.AddRange(new object[] {
															 "Entire",
															 "Quick"});
			this.c_EraseMode.Location = new System.Drawing.Point(8, 56);
			this.c_EraseMode.Name = "c_EraseMode";
			this.c_EraseMode.Size = new System.Drawing.Size(121, 21);
			this.c_EraseMode.TabIndex = 1;
			this.c_EraseMode.SelectedIndexChanged += new System.EventHandler(this.c_EraseMode_SelectedIndexChanged);
			// 
			// c_Device
			// 
			this.c_Device.Location = new System.Drawing.Point(64, 8);
			this.c_Device.Name = "c_Device";
			this.c_Device.ReadOnly = true;
			this.c_Device.Size = new System.Drawing.Size(208, 20);
			this.c_Device.TabIndex = 7;
			this.c_Device.Text = "";
			// 
			// label8
			// 
			this.label8.Location = new System.Drawing.Point(8, 8);
			this.label8.Name = "label8";
			this.label8.Size = new System.Drawing.Size(56, 16);
			this.label8.TabIndex = 6;
			this.label8.Text = "Device:";
			// 
			// c_Erase
			// 
			this.c_Erase.DialogResult = System.Windows.Forms.DialogResult.OK;
			this.c_Erase.Location = new System.Drawing.Point(120, 96);
			this.c_Erase.Name = "c_Erase";
			this.c_Erase.TabIndex = 4;
			this.c_Erase.Text = "Erase";
			this.c_Erase.Click += new System.EventHandler(this.c_Erase_Click);
			// 
			// c_Cancel
			// 
			this.c_Cancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.c_Cancel.Location = new System.Drawing.Point(200, 96);
			this.c_Cancel.Name = "c_Cancel";
			this.c_Cancel.TabIndex = 5;
			this.c_Cancel.Text = "Cancel";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(144, 40);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(72, 16);
			this.label2.TabIndex = 2;
			this.label2.Text = "Erasing time:";
			// 
			// c_ErasingTime
			// 
			this.c_ErasingTime.Location = new System.Drawing.Point(144, 56);
			this.c_ErasingTime.Name = "c_ErasingTime";
			this.c_ErasingTime.ReadOnly = true;
			this.c_ErasingTime.Size = new System.Drawing.Size(64, 20);
			this.c_ErasingTime.TabIndex = 3;
			this.c_ErasingTime.Text = "";
			this.c_ErasingTime.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
			// 
			// EraseForm
			// 
			this.AcceptButton = this.c_Erase;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.CancelButton = this.c_Cancel;
			this.ClientSize = new System.Drawing.Size(282, 128);
			this.Controls.Add(this.c_ErasingTime);
			this.Controls.Add(this.c_Device);
			this.Controls.Add(this.c_Erase);
			this.Controls.Add(this.label8);
			this.Controls.Add(this.c_EraseMode);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.c_Cancel);
			this.Controls.Add(this.label2);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "EraseForm";
			this.ShowInTaskbar = false;
			this.Text = "Erase";
			this.ResumeLayout(false);

		}
		#endregion

		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad (e);

			c_Device.Text = m_drive.DeviceName;

			// Make quick selected by default.
			// 
			c_EraseMode.SelectedIndex = 1;
		}

		protected void UpdateErasingTime ()
		{
			// Let's update the erasing time according to the
			// method chosen.
			// 
			if (-1 != c_EraseMode.SelectedIndex)
			{
				// Quick erase is at index 1, while entire is at 0.
				// 
				bool bQuick = c_EraseMode.SelectedIndex != 0;

				try
				{
					// Get the erasing time. The value returned is in seconds.
					// Let's convert it to mm:ss.
					// 
					int iSeconds = m_drive.get_CDRWErasingTime (bQuick);
					int iMinutes = iSeconds/60;
					iSeconds %= 60;

					// Format the time with leading zeroes as mm:ss
					// 
					c_ErasingTime.Text = iMinutes.ToString ("00") + ":" + iSeconds.ToString ("00");

					c_Erase.Enabled = true;
					c_EraseMode.Enabled = true;
				}
				catch (COMException ex)
				{
					// If a COM exception occurs, we could not obtain the
					// time needed to erase the disc.
					// 
					c_ErasingTime.Text = "";
					c_Erase.Enabled = false;
					c_EraseMode.Enabled = false;

					MessageBox.Show (this, ex.Message );
				}
			}
			else
			{
				c_ErasingTime.Text = "";
			}
		}

		private void c_EraseMode_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			// When the erase method is changed, display the new time.
			// 
			UpdateErasingTime ();
		}

		private void c_Erase_Click(object sender, System.EventArgs e)
		{
			// When erase is reqested, hide the current form and display
			// the erase progress form. ShowDialog will start the actual
			// erase process.
			// 
			bool bQuick = c_EraseMode.SelectedIndex != 0;
			EraseProgressForm frm = new EraseProgressForm (m_drive, bQuick);

			this.Hide ();
			frm.ShowDialog (this);
		}
	}
}