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. |