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How do I get Emacs to recognize the third button on my mouse?

April 26, 2017button Emacs mouse recognize

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How do I get Emacs to recognize the third button on my mouse?

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If you have a three-button mouse, Emacs should recognize and support the third (middle) button automatically. However, some people find that they have a three button mouse, but the middle mouse button does not work for them. First check to see if w32-num-mouse-buttons is set correctly. If so, then check to see whether your mouse has been installed with the proper driver (open Control Panel->Mouse to examine the driver being used). If you have the right driver, then, on NT, check if HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Busmouse\Paramete rs\NumberOfButtons is set to 3, and change it to 3 if it is not. If nothing seems to be amiss, then at the very least you can have Emacs emulate the middle button by setting w32-num-mouse-buttons to 2.