MOUSE

  MOUSE:-

A Mouse is an input device that rolls around on a flat surface and controls the pointer on a display screen.The pointer is an on_screen object _ usually an arrow _ that is use to select text; access menus: and interact with programs, files or data appear on screen. As you move the mouse, the pointer on the display screen moves in the same direction. A typical mouse has to buttons, which perform different functions depending on what application is running.Some mouse also include a scroll wheel for scrolling through long documents.
Optical mouse is getting popular nowadays: instead of having a roller ball it uses light reflection to control the movement of pointer on the screen.
 MOUSE EVENTS:
                               Mouse event refers to the activity that can be performed by using the mouse.
A typical mouse can perform the following events:

• Left Click
• Right Click
• Drag 

Left click:

                 Left click is used to select a graphical object such as a file icon and apiece of text in a document etc., or to press a button such as  the start  button and closing, opening or minimizing a window etc.

Right Click:

                    Right click is used to view the properties  of  an object such as  file, folder,desktop etc.

Drag:

          Drag event triggers when you keep on pressing the left mouse button while moving the mouse.This event is used to select more than one items at a time, a to drop an object into another application.