OnMouseEnter, OnMouseHover, OnMouseLeave event : Form Event : GUI Windows Form C# Source Code

OnMouseEnter, OnMouseHover, OnMouseLeave event

    
 

using System;
using System.Drawing;
using System.Windows.Forms;
   
class EnterLeave: Form
{
     bool bInside = false;
   
     public static void Main()
     {
          Application.Run(new EnterLeave());
     }
     public EnterLeave()
     {
     }
     protected override void OnMouseEnter(EventArgs ea)
     {
          bInside = true;
          Invalidate();
     }
     protected override void OnMouseLeave(EventArgs ea)
     {
          bInside = false;
          Invalidate();
     }
     protected override void OnMouseHover(EventArgs ea)
     {
          Graphics grfx = CreateGraphics();
    
          grfx.Clear(Color.Red);
          System.Threading.Thread.Sleep(500);
          grfx.Clear(Color.Green);
          grfx.Dispose();
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
   
          grfx.Clear(bInside ? Color.Green : BackColor);
     }
}

 
    
   
  
   

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• OnInputLanguageChanged
• Form Focus event
• On Mouse Wheel
• OnKeyDown event
• OnClick event
• Form OnResize
• Form OnMove event
• Cancel Event
• Uncloseable event
• Bind key action to a form window
• Form window closing event