Screen library referenceDevices (screen.h) Parent topic: Devices (screen.h)

screen_get_device_property_pv()

Retrieve the current value of the specified device property of type void*

Synopsis:

#include <screen/screen.h>
int screen_get_device_property_pv(screen_device_t dev,
                                  int pname,
                                  void **param)

Arguments:

dev
The handle of the device whose property is being queried.
pname
The name of the property whose value is being queried. The properties available for query are of type Screen property types.
param
The buffer where the retrieved value(s) is stored. This buffer must be of type void*.

Library:

libscreen

Description:

Function Type: Flushing Execution

This function stores the current value of a device property in a user-provided buffer.

The values of the following properties can be retrieved using this function:

Note [1]: When retrieving this property, the function type is Immediate Execution.

Returns:

0 if successful, or -1 if an error occurred (errno is set; refer to errno.h for more details).

Parent topic: Devices (screen.h)