These represent the buttons on a mouse. 
| Enumerator | 
|---|
| Mouse_XPos | The mouses absolute position on the X-Axis.  | 
| Mouse_YPos | The mouses absolute position on the Y-Axis.  | 
| Mouse_XDelta | The mouses movement delta on the X-Axis.  | 
| Mouse_YDelta | The mouses movement delta on the Y-Axis.  | 
| Mouse_Wheel | The mouses wheel delta.  | 
| Mouse_Wheel2 | The mouses second wheel delta (rare on mouses)  | 
| Mouse_MaxAxis | Max axis enum.  | 
| Mouse_LeftButton | Left mouse button.  | 
| Mouse_RightButton | Right mouse button.  | 
| Mouse_MiddleButton | Middle mouse button.  | 
| Mouse_Extra1 | Extra mouse button 1 (often maps to 'back')  | 
| Mouse_Extra2 | Extra mouse button 2 (often maps to 'forward')  | 
| Mouse_Extra3 | Extra mouse button 3.  | 
| Mouse_Extra4 | Extra mouse button 4.  | 
| Mouse_Extra5 | Extra mouse button 5.  | 
| Mouse_Max | Maximum mouse input.  | 
| Mouse_MaxButtons | Number of mouse buttons.  | 
| Mouse_ForceInt | Force mouse button to an int type.  |