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 |
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 |
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
| Returns: | GdkSurface |
The |
|
| The data is owned by the instance. | |
The return value can be NULL. |