Retrieve the current value of the specified device property of type void*.
#include <screen/screen.h>
int screen_get_device_property_pv(screen_device_t dev,
int pname,
void **param)
The handle of the device whose property is being queried.
The name of the property whose value is being queried. The properties available for query are of type Screen property types.
The buffer where the retrieved value(s) will be stored. This buffer must be of type void*.
Function Type: Flushing Execution
This function stores the current value of a device property in a user-provided buffer.
0 if a query was successful and the value(s) of the property are stored in param, or -1 if an error occurred (errno is set; refer to /usr/include/errno.h for more details). Note that the error may also have been caused by any delayed execution function that's just been flushed.