C# MenuItem.MeasureItem事件代码示例

private void MenuItem1_MeasureItem(Object sender, MeasureItemEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Graphics", e.Graphics );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Index", e.Index );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ItemHeight", e.ItemHeight );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ItemWidth", e.ItemWidth );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "MeasureItem Event" );
}

//引入命名空间
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class MenuItemOwnerDraw : System.Windows.Forms.Form
{
  private System.Windows.Forms.MainMenu mainMenu1;
  private System.Windows.Forms.MenuItem mnuNew;
  private System.Windows.Forms.MenuItem mnuFile;
  private System.Windows.Forms.MenuItem mnuFileClose;
  private System.Windows.Forms.MenuItem mnuFileSave;
  private System.Windows.Forms.MenuItem mnuFileSaveAs;
  private System.Windows.Forms.MenuItem mnuEdit;
  private System.Windows.Forms.MenuItem mnuEditCopy;
  private System.Windows.Forms.MenuItem mnuEditPaste;
  private System.Windows.Forms.MenuItem mnuOption1;
  private System.Windows.Forms.MenuItem mnuOption2;
  private System.Windows.Forms.MenuItem mnuOption3;
  private System.Windows.Forms.MenuItem mnuROption1;
  private System.Windows.Forms.MenuItem mnuROption2;
  private System.Windows.Forms.MenuItem mnuROption3;
  private System.Windows.Forms.MenuItem mnuWindow;
  private System.Windows.Forms.MenuItem mnuOptions;
  private System.Windows.Forms.MenuItem mnuRadioOptions;
  private System.Windows.Forms.MenuItem mnuMenu1;
  private System.Windows.Forms.MenuItem mnuMenu11;
  private System.Windows.Forms.MenuItem mnuMenu12;
  private System.Windows.Forms.MenuItem mnuMenu13;
  private System.Windows.Forms.MenuItem mnuMenu14;
  private System.Windows.Forms.MenuItem mnuMenu2;
  private System.Windows.Forms.MenuItem mnuMenu21;
  private System.Windows.Forms.MenuItem mnuMenu22;
  private System.Windows.Forms.MenuItem mnuMenu23;
  private System.Windows.Forms.MenuItem mnuMenu24;
  private System.Windows.Forms.MenuItem mnuMerge;
  private System.Windows.Forms.MenuItem mnuODShazam;

  private string[] files = { @"YourFile.bmp", @"YourFile.bmp" };
  private System.Windows.Forms.MenuItem mnuODVote;
  private System.Windows.Forms.MenuItem mnuSpecial;

  private System.ComponentModel.Container components = null;

  public MenuItemOwnerDraw()
  {
    InitializeComponent();
  }

  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }

  private void InitializeComponent()
  {
    this.mainMenu1 = new System.Windows.Forms.MainMenu();
    this.mnuFile = new System.Windows.Forms.MenuItem();
    this.mnuNew = new System.Windows.Forms.MenuItem();
    this.mnuFileClose = new System.Windows.Forms.MenuItem();
    this.mnuFileSave = new System.Windows.Forms.MenuItem();
    this.mnuFileSaveAs = new System.Windows.Forms.MenuItem();
    this.mnuEdit = new System.Windows.Forms.MenuItem();
    this.mnuEditCopy = new System.Windows.Forms.MenuItem();
    this.mnuEditPaste = new System.Windows.Forms.MenuItem();
    this.mnuOptions = new System.Windows.Forms.MenuItem();
    this.mnuOption1 = new System.Windows.Forms.MenuItem();
    this.mnuOption2 = new System.Windows.Forms.MenuItem();
    this.mnuOption3 = new System.Windows.Forms.MenuItem();
    this.mnuRadioOptions = new System.Windows.Forms.MenuItem();
    this.mnuROption1 = new System.Windows.Forms.MenuItem();
    this.mnuROption2 = new System.Windows.Forms.MenuItem();
    this.mnuROption3 = new System.Windows.Forms.MenuItem();
    this.mnuSpecial = new System.Windows.Forms.MenuItem();
    this.mnuODVote = new System.Windows.Forms.MenuItem();
    this.mnuODShazam = new System.Windows.Forms.MenuItem();
    this.mnuWindow = new System.Windows.Forms.MenuItem();
    this.mnuMenu1 = new System.Windows.Forms.MenuItem();
    this.mnuMenu11 = new System.Windows.Forms.MenuItem();
    this.mnuMenu12 = new System.Windows.Forms.MenuItem();
    this.mnuMenu13 = new System.Windows.Forms.MenuItem();
    this.mnuMenu14 = new System.Windows.Forms.MenuItem();
    this.mnuMerge = new System.Windows.Forms.MenuItem();
    this.mnuMenu2 = new System.Windows.Forms.MenuItem();
    this.mnuMenu21 = new System.Windows.Forms.MenuItem();
    this.mnuMenu22 = new System.Windows.Forms.MenuItem();
    this.mnuMenu23 = new System.Windows.Forms.MenuItem();
    this.mnuMenu24 = new System.Windows.Forms.MenuItem();
    // 
    // mainMenu1
    // 
    this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                          this.mnuFile,
                                          this.mnuEdit,
                                          this.mnuOptions,
                                          this.mnuRadioOptions,
                                          this.mnuSpecial,
                                          this.mnuWindow,
                                          this.mnuMenu1,
                                          this.mnuMenu2});
    // 
    // mnuFile
    // 
    this.mnuFile.Index = 0;
    this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                        this.mnuNew,
                                        this.mnuFileClose,
                                        this.mnuFileSave,
                                        this.mnuFileSaveAs});
    this.mnuFile.Text = "File";
    // 
    // mnuNew
    // 
    this.mnuNew.Index = 0;
    this.mnuNew.Shortcut = System.Windows.Forms.Shortcut.CtrlN;
    this.mnuNew.Text = "&New";
    this.mnuNew.Click += new System.EventHandler(this.mnuNew_Click);
    // 
    // mnuFileClose
    // 
    this.mnuFileClose.Index = 2;
    this.mnuFileClose.Text = "Close";

    // 
    // mnuFileSave
    // 
    this.mnuFileSave.Index = 3;
    this.mnuFileSave.Text = "Save";
    this.mnuFileSave.Click += new System.EventHandler(this.mnuFileSave_Click);
    // 
    // mnuFileSaveAs
    // 
    this.mnuFileSaveAs.Index = 4;
    this.mnuFileSaveAs.Text = "Save&As";
    this.mnuFileSaveAs.Click += new System.EventHandler(this.mnuFileSaveAs_Click);
    // 
    // mnuEdit
    // 
    this.mnuEdit.Index = 1;
    this.mnuEdit.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                        this.mnuEditCopy,
                                        this.mnuEditPaste});
    this.mnuEdit.Text = "Edit";
    // 
    // mnuEditCopy
    // 
    this.mnuEditCopy.Index = 0;
    this.mnuEditCopy.Text = "&Copy";
    this.mnuEditCopy.Click += new System.EventHandler(this.mnuEditCopy_Click);
    // 
    // mnuEditPaste
    // 
    this.mnuEditPaste.Index = 1;
    this.mnuEditPaste.Text = "Paste";
    this.mnuEditPaste.Click += new System.EventHandler(this.mnuEditPaste_Click);
    // 
    // mnuOptions
    // 
    this.mnuOptions.Index = 2;
    this.mnuOptions.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                           this.mnuOption1,
                                           this.mnuOption2,
                                           this.mnuOption3});
    this.mnuOptions.Text = "Options";
    // 
    // mnuOption1
    // 
    this.mnuOption1.Index = 0;
    this.mnuOption1.Text = "Option1";
    this.mnuOption1.Click += new System.EventHandler(this.Option_Click);
    // 
    // mnuOption2
    // 
    this.mnuOption2.Index = 1;
    this.mnuOption2.Text = "Option2";
    this.mnuOption2.Click += new System.EventHandler(this.Option_Click);
    // 
    // mnuOption3
    // 
    this.mnuOption3.Index = 2;
    this.mnuOption3.Text = "Option3";
    this.mnuOption3.Click += new System.EventHandler(this.Option_Click);
    // 
    // mnuRadioOptions
    // 
    this.mnuRadioOptions.Index = 3;
    this.mnuRadioOptions.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                            this.mnuROption1,
                                            this.mnuROption2,
                                            this.mnuROption3});
    this.mnuRadioOptions.Text = "Radio Options";
    // 
    // mnuROption1
    // 
    this.mnuROption1.Index = 0;
    this.mnuROption1.RadioCheck = true;
    this.mnuROption1.Text = "Radio Option 1";
    this.mnuROption1.Click += new System.EventHandler(this.RadioOption_Click);
    // 
    // mnuROption2
    // 
    this.mnuROption2.Index = 1;
    this.mnuROption2.RadioCheck = true;
    this.mnuROption2.Text = "Radio Option 2";
    this.mnuROption2.Click += new System.EventHandler(this.RadioOption_Click);
    // 
    // mnuROption3
    // 
    this.mnuROption3.Index = 2;
    this.mnuROption3.RadioCheck = true;
    this.mnuROption3.Text = "Radio Option 3";
    this.mnuROption3.Click += new System.EventHandler(this.RadioOption_Click);
    // 
    // mnuSpecial
    // 
    this.mnuSpecial.Index = 4;
    this.mnuSpecial.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                           this.mnuODVote,
                                           this.mnuODShazam});
    this.mnuSpecial.Text = "Special";
    // 
    // mnuODVote
    // 
    this.mnuODVote.Index = 0;
    this.mnuODVote.OwnerDraw = true;
    this.mnuODVote.Text = "Vote";
    this.mnuODVote.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.OnDrawItem);
    this.mnuODVote.Click += new System.EventHandler(this.mnuODDraw_Click);
    this.mnuODVote.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.OnMeasureItem);
    // 
    // mnuODShazam
    // 
    this.mnuODShazam.Index = 1;
    this.mnuODShazam.OwnerDraw = true;
    this.mnuODShazam.Text = "Shazam";
    this.mnuODShazam.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.OnDrawItem);
    this.mnuODShazam.Click += new System.EventHandler(this.mnuODDraw_Click);
    this.mnuODShazam.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.OnMeasureItem);
    // 
    // mnuWindow
    // 
    this.mnuWindow.Index = 5;
    this.mnuWindow.MdiList = true;
    this.mnuWindow.MergeOrder = 99;
    this.mnuWindow.Text = "&Window";
    // 
    // mnuMenu1
    // 
    this.mnuMenu1.Index = 6;
    this.mnuMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                         this.mnuMenu11,
                                         this.mnuMenu12,
                                         this.mnuMenu13,
                                         this.mnuMenu14,
                                         this.mnuMerge});
    this.mnuMenu1.Text = "Menu 1";
    // 
    // mnuMenu11
    // 
    this.mnuMenu11.Index = 0;
    this.mnuMenu11.MergeOrder = 1;
    this.mnuMenu11.Text = "Menu 1.1";
    // 
    // mnuMenu12
    // 
    this.mnuMenu12.Index = 1;
    this.mnuMenu12.MergeOrder = 2;
    this.mnuMenu12.Text = "Menu 1.2";
    // 
    // mnuMenu13
    // 
    this.mnuMenu13.Index = 2;
    this.mnuMenu13.MergeOrder = 3;
    this.mnuMenu13.Text = "Menu 1.3";
    // 
    // mnuMenu14
    // 
    this.mnuMenu14.Index = 3;
    this.mnuMenu14.MergeOrder = 4;
    this.mnuMenu14.Text = "Menu 1.4";
    // 
    // mnuMerge
    // 
    this.mnuMerge.Index = 4;
    this.mnuMerge.MergeOrder = 99;
    this.mnuMerge.Text = "Merge!";
    this.mnuMerge.Click += new System.EventHandler(this.mnuMerge_Click);
    // 
    // mnuMenu2
    // 
    this.mnuMenu2.Index = 7;
    this.mnuMenu2.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                         this.mnuMenu21,
                                         this.mnuMenu22,
                                         this.mnuMenu23,
                                         this.mnuMenu24});
    this.mnuMenu2.Text = "Menu 2";
    // 
    // mnuMenu21
    // 
    this.mnuMenu21.Index = 0;
    this.mnuMenu21.MergeOrder = 1;
    this.mnuMenu21.Text = "Menu 2.1";
    // 
    // mnuMenu22
    // 
    this.mnuMenu22.Index = 1;
    this.mnuMenu22.MergeOrder = 2;
    this.mnuMenu22.MergeType = System.Windows.Forms.MenuMerge.Replace;
    this.mnuMenu22.Text = "Menu 2.2";
    // 
    // mnuMenu23
    // 
    this.mnuMenu23.Index = 2;
    this.mnuMenu23.MergeOrder = 3;
    this.mnuMenu23.MergeType = System.Windows.Forms.MenuMerge.Remove;
    this.mnuMenu23.Text = "Menu 2.3";
    // 
    // mnuMenu24
    // 
    this.mnuMenu24.Index = 3;
    this.mnuMenu24.MergeOrder = 5;
    this.mnuMenu24.Text = "Menu 2.4";
    // 
    // MenuItemOwnerDraw
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(536, 148);
    this.IsMdiContainer = true;
    this.Menu = this.mainMenu1;
    this.Name = "MenuItemOwnerDraw";
    this.Text = "MenuItemOwnerDraw";

  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new MenuItemOwnerDraw());
  }


  private void mnuNew_Click(object sender, System.EventArgs e)
  {
  }

  private void Option_Click(object sender, System.EventArgs e)
  {
  }

  private void RadioOption_Click(object sender, System.EventArgs e)
  {
  }

  private void mnuEditCopy_Click(object sender, System.EventArgs e)
  {
  }

  private void mnuEditPaste_Click(object sender, System.EventArgs e)
  {
  }

  private void mnuFileSave_Click(object sender, System.EventArgs e)
  {
  }

  private void mnuFileSaveAs_Click(object sender, System.EventArgs e)
  {
  }

  private void mnuMerge_Click(object sender, System.EventArgs e)
  {
  }

  private void OnDrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
  {
    Image img = Image.FromFile(files[e.Index]);
    Rectangle r = e.Bounds;
    Pen pen = new Pen(e.BackColor,2);
    r.Inflate(-6,-6);
    e.Graphics.DrawRectangle(pen,r);
    e.Graphics.DrawImage(img,r);
  }

  private void OnMeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
  {
    Image img = Image.FromFile(files[e.Index]);
    e.ItemHeight = img.Height;
    e.ItemWidth = img.Width;
  }

  private void mnuODDraw_Click(object sender, System.EventArgs e)
  {
    MenuItem item = sender as MenuItem;
    if ( item != null )
    {
      string choice = item.Text;
    
      MessageBox.Show ("You clicked " + choice, "Menu Event Tester", 
        MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
    }
  }
}