Reverse the buttons on your mouse so you can use your index finger for left-click functionality while the mouse is on the left side of the keyboard.If you are left-handed, moving your mouse to the left side of your keyboard can hinder computer usage more than helping it because your natural tendency may be to use your index finger for left-click functionality. However, the left mouse button remains the primary one, forcing you to use your middle finger for left-click functionality. Using a Command Prompt shortcut, you can remove this limitation by reversing the mouse buttons.
Open the Command Prompt. Type "CMD" in the search box at the bottom of the menu, and wait for the "CMD" icon to appear on the results list.
Right-click the "CMD" icon, and select "Run as Administrator" on the context menu. If you are using a limited user account, provide an Administrator password to continue. This opens a Command Prompt window.
Type "RUNDLL32.EXE USER32.DLL,SwapMouseButton" and press "Enter." The Command Prompt drops to the next line without displaying a confirmation message.
Position the mouse pointer over the "X" in the upper-right corner of the Command Prompt window and click the right mouse button. The window closes. The right mouse button now functions as the primary click, and the left mouse button functions as the secondary click.
Tips & Warnings
- You can also change a mouse to left-handed using the "Mouse" icon on the Windows Control Panel. Click the "Buttons" tab at the top of the "Mouse" window, and then click to place a check in the "Switch primary and secondary buttons" box. Clearing this box is also the only way to change the mouse back to right-handed after using the Command Prompt steps described in this article.
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