C# Form.MenuComplete事件代码示例

private void Form1_MenuComplete(Object sender, EventArgs e) {

   MessageBox.Show("You are in the Form.MenuComplete 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;
  
  internal struct TheFontSize
  {
    public static int Huge = 30;
    public static int Normal = 20;
    public static int Tiny = 8;
  }
  
  public class mainForm : System.Windows.Forms.Form
  {
    Color currColor = Color.MistyRose;
    private int currFontSize = TheFontSize.Normal;
    private StatusBarPanel sbPnlPrompt = new StatusBarPanel();
    private StatusBarPanel sbPnlTime = new StatusBarPanel();
    private MainMenu mainMenu = new MainMenu();
    
    private MenuItem currentCheckedItem;
    private MenuItem checkedHuge;
    private MenuItem checkedNormal;
    private MenuItem checkedTiny;


    public mainForm()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);

      this.MenuComplete += new EventHandler(StatusForm_MenuDone);

      BuildMenuSystem();
      BuildStatBar();
    }

    static void Main() 
    {
      Application.Run(new mainForm());
    }

    private void FileExit_Clicked(object sender, EventArgs e) 
    {
      Console.WriteLine("File | Exit Menu item handler");
      this.Close();
    }

    private void FileSave_Clicked(object sender, EventArgs e) 
    {
            Console.WriteLine("File | Save Menu item handler");
    }

    private void ColorItem_Clicked(object sender, EventArgs e) 
    {
      MenuItem miClicked = (MenuItem)sender;
      string color = miClicked.Text.Remove(0,1);
      
      this.BackColor = Color.FromName(color);
      currColor = this.BackColor;
    }

    private void PopUp_Clicked(object sender, EventArgs e) 
    {
      currentCheckedItem.Checked = false;

      MenuItem miClicked = (MenuItem)sender;
      string item = miClicked.Text;
      
      if(item == "Huge") {
        currFontSize = TheFontSize.Huge;
        currentCheckedItem = checkedHuge;
      }else if(item == "Normal") {
        currFontSize = TheFontSize.Normal;
        currentCheckedItem = checkedNormal;
      }else if(item == "Tiny") {
        currFontSize = TheFontSize.Tiny;
        currentCheckedItem = checkedTiny;
      }
      currentCheckedItem.Checked = true;
      Invalidate();
    }

    protected override void OnPaint(PaintEventArgs e)
    {
      Graphics g = e.Graphics;

      g.DrawString("www.java2s.com", 
        new Font("Times New Roman", (float)currFontSize), 
        new SolidBrush(Color.Black), 
        this.DisplayRectangle);
    }
    
    protected override void OnResize(EventArgs e)
    {
      base.OnResize(e);
      Invalidate();
    }

    private void HelpAbout_Clicked(object sender, EventArgs e) 
    {
      Console.WriteLine("The amazing final app...", "About...");
    }
        
    private void FileMenuItem_Selected(object sender, EventArgs e) 
    {
      MenuItem miClicked = (MenuItem)sender;
      string item = miClicked.Text.Remove(0,1);
      
      if(item == "Save..."){
        sbPnlPrompt.Text = "Save current settings.";     
      }else{
        sbPnlPrompt.Text = "Terminates this app.";     
        } 
    }

    private void ColorMenuItem_Selected(object sender, EventArgs e) 
    {
      MenuItem miClicked = (MenuItem)sender;
      string item = miClicked.Text.Remove(0,1);
      sbPnlPrompt.Text = "Select " + item;            
    }

    private void HelpAbout_Selected(object sender, EventArgs e) 
    {
      sbPnlPrompt.Text = "Displays app info";
    }

    private void StatusForm_MenuDone(object sender, EventArgs e) 
    {
      sbPnlPrompt.Text = "Ready";
    }

    private void timer1_Tick(object sender, EventArgs e) 
    {
      DateTime t = DateTime.Now;
      string s = t.ToLongTimeString() ;
      sbPnlTime.Text = s ;    
    }

    private void BuildMenuSystem()
    {
      MenuItem miFile = mainMenu.MenuItems.Add("&File");           
      miFile.MenuItems.Add(new MenuItem("&Save...", new EventHandler(this.FileSave_Clicked), Shortcut.CtrlS));     
      miFile.MenuItems.Add(new MenuItem("E&xit", new EventHandler(this.FileExit_Clicked), Shortcut.CtrlX));

      miFile.MenuItems[0].Select += new EventHandler(FileMenuItem_Selected);
      miFile.MenuItems[1].Select += new EventHandler(FileMenuItem_Selected);

      MenuItem miColor = mainMenu.MenuItems.Add("&Background Color");
      miColor.MenuItems.Add("&DarkGoldenrod", new EventHandler(ColorItem_Clicked));
      miColor.MenuItems.Add("&GreenYellow", new EventHandler(ColorItem_Clicked));
      
      for(int i = 0; i < miColor.MenuItems.Count; i++){
        miColor.MenuItems[i].Select += new EventHandler(ColorMenuItem_Selected);
            }

      MenuItem miHelp = mainMenu.MenuItems.Add("Help");  
      miHelp.MenuItems.Add(new MenuItem("&amp;About", new EventHandler(this.HelpAbout_Clicked), Shortcut.CtrlA));
      miHelp.MenuItems[0].Select += new EventHandler(HelpAbout_Selected);

      this.Menu = mainMenu;  

            ContextMenu popUpMenu = new ContextMenu();

      popUpMenu.MenuItems.Add("Huge", new EventHandler(PopUp_Clicked));
      popUpMenu.MenuItems.Add("Normal", new EventHandler(PopUp_Clicked));
      popUpMenu.MenuItems.Add("Tiny", new EventHandler(PopUp_Clicked));

      this.ContextMenu = popUpMenu;

      checkedHuge = this.ContextMenu.MenuItems[0];
      checkedNormal = this.ContextMenu.MenuItems[1];        
      checkedTiny = this.ContextMenu.MenuItems[2];
      
      if(currFontSize == TheFontSize.Huge)
        currentCheckedItem = checkedHuge;
      else if(currFontSize == TheFontSize.Normal)
        currentCheckedItem = checkedNormal;
      else
        currentCheckedItem = checkedTiny;

      currentCheckedItem.Checked = true;
    }

    private void BuildStatBar()
    {
        Timer timer1 = new Timer();
      timer1.Interval = 1000;
      timer1.Enabled = true;
      timer1.Tick += new EventHandler(timer1_Tick);

        StatusBar statusBar = new StatusBar();
        
      statusBar.ShowPanels = true;
      statusBar.Panels.AddRange((StatusBarPanel[])new StatusBarPanel[] {sbPnlPrompt, sbPnlTime});

      sbPnlPrompt.BorderStyle = StatusBarPanelBorderStyle.None;
      sbPnlPrompt.AutoSize = StatusBarPanelAutoSize.Spring;
      sbPnlPrompt.Width = 62;
      sbPnlPrompt.Text = "Ready";

      sbPnlTime.Alignment = System.Windows.Forms.HorizontalAlignment.Right;
      sbPnlTime.Width = 76;

      try
      {
        Icon i = new Icon("icon1.ico");
        sbPnlPrompt.Icon = i;
      } catch(Exception e) {
        MessageBox.Show(e.Message);
      }

      this.Controls.Add(statusBar);  
    }

  }