Paint two forms with one paint event handler : Form Event « GUI Windows Forms « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. GUI Windows Forms
3. Form Event

using System;
using System.Drawing;
using System.Windows.Forms;
   
class PaintTwoForms
{
     static Form form1, form2;
   
     public static void Main()
     {
          form1 = new Form();
          form2 = new Form();
   
          form1.Text      = "First Form";
          form1.BackColor = Color.White;
          form1.Paint    += new PaintEventHandler(MyPaintHandler);
   
          form2.Text      = "Second Form";
          form2.BackColor = Color.White;
          form2.Paint    += new PaintEventHandler(MyPaintHandler);
          form2.Show();
   
          Application.Run(form1);
     }
     static void MyPaintHandler(object objSender, PaintEventArgs pea)
     {
          Form     form = (Form)objSender;
          Graphics graphics = pea.Graphics;
          string   str;
   
          if(form == form1)
               str = "Hello from the first form";
          else
               str = "Hello from the second form";
   
          graphics.DrawString(str, form.Font, Brushes.Black, 0, 0);
     }
}

23.3.Form Event
	23.3.1.	Form size changed event handler
	23.3.2.	All form events
	23.3.3.	React to form resize event
	23.3.4.	Paint event
	23.3.5.	Paint two forms with one paint event handler
	23.3.6.	Paint one forms with two paint event handler
	23.3.7.	Form Mouse Up event
	23.3.8.	Form mouse move event
	23.3.9.	Form Key event
	23.3.10.	Form life time event: Closing, Load, Closed, Activated, Deactivate
	23.3.11.	Cancel Form Closing event
	23.3.12.	Form Paint event