Window.onMouseWheel

This is the state of shift keys and mouse buttons that were pressed at the same time when the mouse was moving.
It is a combination of the following values by bit OR.

• ssAlt : The ALT key was pressed
• ssShift : The SHIFT key was pressed
• ssCtrl : CTRL key was pressed
• ssLeft : The left mouse button was pressed
• ssMiddle : The middle mouse button was pressed
• ssRight : The right mouse button was pressed

The angle of rotation of the wheel.
If it is turned upward (the direction opposite to the user), it will be a positive value, and if it is turned downward (the direction toward the user), it will be a negative value.
The minimum amount is typically 120.

The x-coordinate (in client coordinates) value of where the wheel was rotated.

The y-coordinate (in client coordinates) value of where the wheel was rotated.