Demonstration of e.Delta Property of MouseWheel
Demonstration of e DELTA property of MouseWheel scroll UP/ down in visual
C# Control things with scroll of mouse wheels.
This is a simple demonstration of e.Delta property of MouseWheel event , On scroll Up and Down of Mouse wheel. (MouseEventHandler).
Mouse wheel event can be very handy and use full for some cool application for your projects , where you can do things with scroll of mouse. For example, In my project for LCD display using pic18f4550 using USB , I used the same concept of e.Delta property in C# for controlling text on a LCD display on mouse scroll up and down ( http://www.youtube.com/watch?v=xMIhc4DsJ3A ).
The sample below shows the logic behind the e.Delta property, Download a copy of a project at the bottom of this page for better understanding. A block of code below shows the simple logic behind it.
First you have to initialize the MouseWheel event
“this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseWheel);”
You can use it under a button where the scrolling event will work only after you click the button under which the above sample is defined or you can put it under Public form , InitializeComponent(); directly from the beginning.
private void Form1_MouseWheel(object sender, MouseEventArgs e)
{
if (e.Delta > 0) // On Scroll up mouse wheels.
{
DO Something;
}
else //scrolling down mouse wheels
{
DO something Else;
}
}
Namespace: System.Windows.Forms
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Download Sample copy of Visual C# project here.
Download project : e.Delta Mouse wheel event
Thanks for reading
Rakesh Mondal
ron
