screen_set_display_property_fv()
Set the value of the specified display property of type float
Synopsis:
#include <screen/screen.h>
int screen_set_display_property_fv(screen_display_t disp, int pname, const float *param)
Arguments:
- disp
- The handle of the display whose property is to be set.
- pname
- The name of the property whose value is being set. The properties that you can set are of type Screen property types.
- param
-
A pointer to a buffer containing the new value(s). This buffer must be of type
float
.
Library:
libscreenDescription:
Function Type: Delayed Execution
This function sets the value of a display property from a user-provided buffer. Typically, you must be working within a privileged context of type SCREEN_DISPLAY_MANAGER_CONTEXT to be able to set display-related properties.
You can use this function to set the value of the following properties:
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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