mdichild.cs

一个简单的文本编辑工具

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

namespace MDITextEditor
{
	/// <summary>
	/// Summary description for MDIChild.
	/// </summary>
	public class MDIChild : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menuItem6;
		public System.Windows.Forms.RichTextBox richTextBox1;
		private System.Windows.Forms.MenuItem menuItem7;
		private System.Windows.Forms.MenuItem menuItem8;
		private System.Windows.Forms.MenuItem menuItem9;
		private System.Windows.Forms.MenuItem menuItem10;
		private System.Windows.Forms.MenuItem menuItem11;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
		private System.Drawing.Printing.PrintDocument printDocument1;
		private System.Windows.Forms.PrintDialog printDialog1;
		private System.Windows.Forms.PageSetupDialog pageSetupDialog1;
		private System.Windows.Forms.PrintPreviewDialog printPreviewDialog1;
		StringReader lineReader;

		public MDIChild()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(MDIChild));
			this.menuItem11 = new System.Windows.Forms.MenuItem();
			this.menuItem10 = new System.Windows.Forms.MenuItem();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem7 = new System.Windows.Forms.MenuItem();
			this.menuItem8 = new System.Windows.Forms.MenuItem();
			this.menuItem9 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.menuItem6 = new System.Windows.Forms.MenuItem();
			this.printDocument1 = new System.Drawing.Printing.PrintDocument();
			this.printDialog1 = new System.Windows.Forms.PrintDialog();
			this.printPreviewDialog1 = new System.Windows.Forms.PrintPreviewDialog();
			this.pageSetupDialog1 = new System.Windows.Forms.PageSetupDialog();
			this.SuspendLayout();
			// 
			// menuItem11
			// 
			this.menuItem11.Index = 5;
			this.menuItem11.MergeOrder = 16;
			this.menuItem11.Text = "打印(&P)";
			this.menuItem11.Click += new System.EventHandler(this.menuItem11_Click);
			// 
			// menuItem10
			// 
			this.menuItem10.Index = 4;
			this.menuItem10.MergeOrder = 15;
			this.menuItem10.Text = "打印预览";
			this.menuItem10.Click += new System.EventHandler(this.menuItem10_Click);
			// 
			// richTextBox1
			// 
			this.richTextBox1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(464, 329);
			this.richTextBox1.TabIndex = 0;
			this.richTextBox1.Text = "";
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1,
																					  this.menuItem3});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem2,
																					  this.menuItem7,
																					  this.menuItem8,
																					  this.menuItem9,
																					  this.menuItem10,
																					  this.menuItem11});
			this.menuItem1.MergeType = System.Windows.Forms.MenuMerge.MergeItems;
			this.menuItem1.Text = "文件(&F)";
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 0;
			this.menuItem2.MergeOrder = 8;
			this.menuItem2.Text = "保存(&S)";
			this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
			// 
			// menuItem7
			// 
			this.menuItem7.Index = 1;
			this.menuItem7.MergeOrder = 10;
			this.menuItem7.Text = "-";
			// 
			// menuItem8
			// 
			this.menuItem8.Index = 2;
			this.menuItem8.MergeOrder = 10;
			this.menuItem8.Text = "页面设置";
			this.menuItem8.Click += new System.EventHandler(this.menuItem8_Click);
			// 
			// menuItem9
			// 
			this.menuItem9.Index = 3;
			this.menuItem9.MergeOrder = 14;
			this.menuItem9.Text = "打印设置";
			this.menuItem9.Click += new System.EventHandler(this.menuItem9_Click);
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 1;
			this.menuItem3.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem4,
																					  this.menuItem5,
																					  this.menuItem6});
			this.menuItem3.MergeOrder = 5;
			this.menuItem3.Text = "编辑(&E)";
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 0;
			this.menuItem4.Text = "剪切(&X)";
			this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 1;
			this.menuItem5.Text = "拷贝(&C)";
			this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);
			// 
			// menuItem6
			// 
			this.menuItem6.Index = 2;
			this.menuItem6.Text = "粘贴(&P)";
			this.menuItem6.Click += new System.EventHandler(this.menuItem6_Click);
			// 
			// printDocument1
			// 
			this.printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(this.printDocument1_PrintPage);
			// 
			// printPreviewDialog1
			// 
			this.printPreviewDialog1.AutoScrollMargin = new System.Drawing.Size(0, 0);
			this.printPreviewDialog1.AutoScrollMinSize = new System.Drawing.Size(0, 0);
			this.printPreviewDialog1.ClientSize = new System.Drawing.Size(400, 300);
			this.printPreviewDialog1.Enabled = true;
			this.printPreviewDialog1.Icon = ((System.Drawing.Icon)(resources.GetObject("printPreviewDialog1.Icon")));
			this.printPreviewDialog1.Location = new System.Drawing.Point(470, 26);
			this.printPreviewDialog1.MaximumSize = new System.Drawing.Size(0, 0);
			this.printPreviewDialog1.Name = "printPreviewDialog1";
			this.printPreviewDialog1.Opacity = 1;
			this.printPreviewDialog1.TransparencyKey = System.Drawing.Color.Empty;
			this.printPreviewDialog1.Visible = false;
			// 
			// MDIChild
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(464, 329);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.richTextBox1});
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.Menu = this.mainMenu1;
			this.Name = "MDIChild";
			this.Text = "MDIChild";
			this.ResumeLayout(false);

		}
		#endregion

		private void menuItem4_Click(object sender, System.EventArgs e)
		{
			richTextBox1.Cut();
		}

		private void menuItem5_Click(object sender, System.EventArgs e)
		{
			richTextBox1.Copy();
		}

		private void menuItem6_Click(object sender, System.EventArgs e)
		{
			richTextBox1.Paste();
		}

		private void menuItem2_Click(object sender, System.EventArgs e)
		{
			SaveFileDialog sfDlg=new SaveFileDialog();
			sfDlg.Filter="Rich Text format files(*.rtf)|*.rtf|All files(*.*)|*.*";
			sfDlg.FilterIndex=1;
			sfDlg.DefaultExt="rtf";
			sfDlg.AddExtension=true;
			sfDlg.RestoreDirectory=true;
			if(sfDlg.ShowDialog()==DialogResult.OK)
			{
				richTextBox1.SaveFile(sfDlg.FileName);
				this.Text=sfDlg.FileName;
			}
		}

		private void menuItem11_Click(object sender, System.EventArgs e)
		{
			PrintDialog printdialog=new PrintDialog();
			printdialog.Document=printDocument1;
			lineReader=new StringReader(richTextBox1.Text);
			if(printdialog.ShowDialog()==DialogResult.OK)
			{
				try
				{
					printDocument1.Print();
				}
				catch(Exception excep)
				{
					MessageBox.Show(excep.Message,"打印出错",MessageBoxButtons.OK,MessageBoxIcon.Error);
					printDocument1.PrintController.OnEndPrint(printDocument1,new System.Drawing.Printing.PrintEventArgs());
				}
			}
		}

		private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
		{
			Graphics g=e.Graphics;
			float linesPerPage=0;
			float yPosition=0;
			int count=0;
			float leftMargin=e.MarginBounds.Left;
			float topMargin=e.MarginBounds.Top;
			string line=null;
			Font printFont=this.richTextBox1.Font;
			SolidBrush myBrush=new SolidBrush(Color.Black);
			linesPerPage=e.MarginBounds.Height/printFont.GetHeight(g);

			while(count<linesPerPage && ((line=lineReader.ReadLine())!=null))
			{
				yPosition=topMargin+(count*printFont.GetHeight(g));
				g.DrawString(line,printFont,myBrush,leftMargin,yPosition,new StringFormat());
				count++;
			}

			if(line!=null)
				e.HasMorePages=true;
			else
				e.HasMorePages=false;
		}

		private void menuItem9_Click(object sender, System.EventArgs e)
		{
			PrintDialog printdialog=new PrintDialog();
			printdialog.Document=printDocument1;
			printdialog.ShowDialog();
		}

		private void menuItem8_Click(object sender, System.EventArgs e)
		{
			PageSetupDialog pageSetupDialog=new PageSetupDialog();
			pageSetupDialog.Document=printDocument1;
			pageSetupDialog.ShowDialog();
		}

		private void menuItem10_Click(object sender, System.EventArgs e)
		{
			PrintPreviewDialog printPreviewDialog=new PrintPreviewDialog();
			printPreviewDialog.Document=printDocument1;
			lineReader=new StringReader(richTextBox1.Text);
			try
			{
				printPreviewDialog.ShowDialog();				
			}
			catch(Exception excep)
			{
				MessageBox.Show(excep.Message,"打印出错",MessageBoxButtons.OK,MessageBoxIcon.Error);
			}
		}
	}
}