get_device_position

Description:

public bool get_device_position (Device device, out double x, out double y, out ModifierType mask)

Obtains the current device position and modifier state.

The position is given in coordinates relative to the upper left corner of this.

this	a `GdkSurface`
device	pointer `GdkDevice` to query to
x	return location for the X coordinate of `device`
y	return location for the Y coordinate of `device`
mask	return location for the modifier mask

true if the device is over the surface