screen_get_display_property_fv()

Retrieve the current value of the specified display property of type float

Synopsis:

#include <screen/screen.h>
int screen_get_display_property_fv(screen_display_t disp, int pname, float *param)

Arguments:

disp
The handle of the display 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
A pointer to a buffer where this function stores the retrieved value(s). This buffer must be of type float.

Library:

libscreen

Description:

Function Type: Flushing Execution

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

Note [1]: You must be working within a privileged context of type SCREEN_DISPLAY_MANAGER_CONTEXT to be able get set this property.

Returns:

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

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