Select 'Set blank for option key' radio in the form, submit the form, and download a patched keyboard layout with 'option' key feature disabled. Proved to work on MacOSX 10.7+ with IntelliJ Idea, Php/WebStorm, NetBeans, Eclipse. You can create a custom mapping in several clicks out of almost any keyboard layout.

The special keyboard map on the Mac and extended ASCII character set accessible in Windows are not 100% matched-for instance, there is no Alt code for  (Shift - Option - K), and no Option key combination for ¾ (Alt - 0190)-but it would be nice special characters that can be generated by both keyboard methods.You can create a custom keyboard mapping with option-letters all set to BLANK using online tool from this webpage. My keyboard profile for the VM is already set up to do things such as treat ⌘ - C as ctrl - C when I am in a Windows app, but the keyboard profile in the settings will not permit me to enter keyboard shortcuts such as Alt - 0233 (é) for Windows, or Option - E followed by pressing E again on the Mac (é). As I am now running Windows within a VM at work, I wanted to know if there is a way to map the Option key shortcuts in OS X to the Alt key codes in Windows. Third-party Mac keyboards can be purchased that show the characters that will be produced by using the Option modifier key in combination with the alphanumeric keys, but due to the methodology used in Windows there is no similar Windows keyboard.

The caveat is that Windows requires memorizing a numeric code instead of a single key and the numeric code must be entered from the numeric keypad the latter would be an issue on Macs with the small keyboard. The same characters are generated from the keyboard in Windows by Alt - 0169 (©) and Alt - 241 (±). Windows also has a method, albeit one that is more complex, for entering special characters from the keyboard by holding the Alt key and then entering a numeric code. For instance, on the Mac, Option - G produces the copyright symbol (©) and Shift - Option - = produces the plus/minus symbol (±). A long-standing feature in the Mac OS, predating OS X, is the ability to enter certain special characters from the keyboard using the Option key as an additional modifier key.

Mac special characters map