Method
GdkDeviceget_surface_at_position
Declaration [src]
GdkSurface*
gdk_device_get_surface_at_position (
  GdkDevice* device,
  double* win_x,
  double* win_y
)
Description [src]
Obtains the surface underneath device, returning the location of the
device in win_x and win_y.
Returns NULL if the surface tree under device is not known to GDK
(for example, belongs to another application).
Parameters
- win_x
- 
            Type: double*Return location for the X coordinate of the device location relative to the surface origin. The argument will be set by the function. The argument can be NULL.
- win_y
- 
            Type: double*Return location for the Y coordinate of the device location relative to the surface origin. The argument will be set by the function. The argument can be NULL.
Return value
Type: GdkSurface
The GdkSurface under the
  device position.
| The returned data is owned by the instance. | 
| The return value can be NULL. |