How to Turn ClickLock On or Off in Windows 7
In this tutorial you will learn about the usage of ClickLock to easily select multiple objects.
ClickLock enables you to highlight or drag without holding down the mouse button.
This feature is very useful for selecting items with a laptop touchpad.
 Open the Start menu. Type in "Mouse" (without the quotation marks) and hit Enter.
 To Turn On ClickLock
A) At the bottom of the dialog box, check the "Turn on ClickLock" box. Then, hit the "Apply" button, and then the "OK" button.
B) Go to step 4. To Turn Off ClickLock
A) At the bottom of the dialog box, uncheck the "Turn on ClickLock" box. Then, hit the "Apply" button, and then the "OK" button. (See screenshot above) Let's go to a folder with some items. Press and hold the left mouse button and slowly begin to make a selection. After 3 seconds of the left mouse button being held, release it. You will notice that the process of selecting is still ongoing. This also works for selecting text and other content.
B) You're done.
You can adjust how long
you have to hold the mouse button before ClickLock activates by going to the Mouse options again and clicking the "Settings" button to the right of the "ClickLock" checkbox. Drag the slider to adjust this setting.