#How to setup key mapping in Android Emulator?#
Click the Keyboard button on the side bar after you enter into a certain game. You may follow below steps to setup keyboard mapping for easy control.
1. Drag the WASD key 
to the place where the movement key spot locates on the screen. Drag the Select & Attack key 
to the place where the attack key spot locates on the screen. As the name suggests, it acts as a combination of select and attack through right click your mouse. It’s normally applied in ARPG game.
2. Drag the Shoot key 
to the place where the shoot key spot locates on the screen. Drag the Shoot Perspective key 
to the place where the front sight spot locates. As the name suggests, Shoot and Shoot Perspective keys are normally applied in shooting game. Once saved, right click mouse to activate them in the game.
3. For accelerometer control, click the gravity sensor key 
and assign key to the direction of tilt. There are four directions supported and you may map them as needed.
4. For slide screen operation, hold the left mouse button down and drag the mouse pointer toward the direction of slide screen, then assign a key as you want to this operation. By the way, WASD key functions identically as slide operation in running games.
Note: When you want to zoom in or zoom out the screen, please hold down the Ctrl key + scroll up or down mouse wheel. In addition, you can also try with F2 or F3.
Note: When you want to type message in the game, click the switch icon 
on the top left corner or press shortcuts “Alt + A” to avoid keyboard occupation temporarily.
Note: You can get help info about key mapping in the MEmu by clicking the help icon 
.
EDIT at 17 Mar
Since 2.5.0, WASD combo keys are allowed to customized as any key you want and zoom in&out the range of direction control.
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