Retrieve the current value of the specified display property of type void*
#include <screen/screen.h>
int screen_get_display_property_pv(screen_display_t disp, int pname, void **param)
Function Type: Flushing Execution
This function stores the current value of a display property in a user-provided buffer.
Note [1]: When retrieving this property, the function type is Immediate Execution.
Note [2]: You must be working within a privileged context of type SCREEN_DISPLAY_MANAGER_CONTEXT to be able to retrieve these above properties.
0 if successful, or -1 if an error occurred (errno is set; refer to errno.h for more details).