Form popup menu : ContextMenu Popup Menu : GUI Windows Forms C# Examples

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

public  class  FormPopupMenu  :  System.Windows.Forms.Form
{
    private  int  currFontSize  =  12;

    private  ContextMenu  popUpMenu;

    private  MenuItem  currentCheckedItem;
    private  MenuItem  checkedHuge;
    private  MenuItem  checkedNormal;
    private  MenuItem  checkedTiny;

    private  System.ComponentModel.Container  components;

    public  FormPopupMenu()
    {
        InitializeComponent();

        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];
        currentCheckedItem  =  checkedNormal;
        currentCheckedItem.Checked  =  true;

        this.Resize  +=  new  System.EventHandler(this.FormPopupMenu_Resize);
        this.Paint  +=  new  System.Windows.Forms.PaintEventHandler(this.FormPopupMenu_Paint);
    }

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

    private  void  InitializeComponent()
    {
        this.AutoScaleBaseSize  =  new  System.Drawing.Size(5,  13);
        this.ClientSize  =  new  System.Drawing.Size(292,  273);
    }


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

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

        MenuItem  miClicked  =  null;  

        if  (sender  is  MenuItem)
            miClicked  =  (MenuItem)sender;
        else
            return;

        string  item  =  miClicked.Text;

        if(item  ==  "Huge")
        {  
            currFontSize  =  18;
            currentCheckedItem  =  checkedHuge;
        }  
        if(item  ==  "Normal")
        {  
            currFontSize  =  12;
            currentCheckedItem  =  checkedNormal;
        }  
        if(item  ==  "Tiny")
        {  
            currFontSize  =  8;
            currentCheckedItem  =  checkedTiny;
        }  
        currentCheckedItem.Checked  =  true;
        Invalidate();

    }

    private  void  FormPopupMenu_Paint(object  sender,  System.Windows.Forms.PaintEventArgs  e)
    {
        Graphics  g  =  e.Graphics;

        g.DrawString("string",  
            new  Font("Times  New  Roman",  (float)currFontSize),  
            new  SolidBrush(Color.Black),  
            this.DisplayRectangle);
    }

    private  void  FormPopupMenu_Resize(object  sender,  System.EventArgs  e)
    {
        Invalidate();
    }
}