Key function switching system and method

Personal computers (PC) and online games are very popular in the whole world. In general, players use PC input apparatuses such as keyboards, mice and the like to play PC games. Numerous modern PC games adopt a control scheme generally called as "WASD/Mouse", and the scheme is the combination of "WASD" keys of a keyboard and a mouse, and serves as a mode of interaction with the PC games. In addition, for further extending a game control function, auxiliary keys are cooperatively used with other keyboard keys to serve as shortcut keys for starting the game control function. However, as the positions of the shortcut keys do not conform to human engineering, the players generally feel discomfortable after playing the PC games because the pressures on the wrists of the players are increased when the shortcut keys are frequently used. Embodiments of the invention describe a system and a method capable of selectively performing switching processing through keys on a user-friendly interface apparatus.