I'm using Windows 8.1 on a Surface Pro 2, and my Show Desktop button is 8 pixels wide (that's not even a millimeter), making it near unusable with touch, and even difficult with the mouse. I have the same problem on my desktop, where my multiple monitors make it hard to use without the cursor straying into the next monitor.
How can I increase the width of this button?
I'm assuming there's probably a registry value, but I couldn't find anything about which one to change after a long session of Google-Fu (it's all about peoples' aero peek button being too big, and to disable pen-and-touch input, which I have enabled).
Best Answer
I'm aware of no registry (or otherwise) setting you can change in Windows to affect the width of that button.
There are 3rd party utilities that can adjust the size (as long as the program is running).
One I've tested on Windows 7 and 8.1 is Show Desktop, and it works as advertised.
An alternative (which I have not tested) is 7+ Taskbar Tweaker:
In their FAQ they also mention that there's no registry setting that can be changed to affect the width (and other options they provide):