screen_get_device_property_fv()
Retrieve the current value of the specified device property of type float
Synopsis:
#include <screen/screen.h>
int screen_get_device_property_fv(screen_device_t dev, int pname, float *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
-
A pointer to a buffer where this function stores the retrieved value(s). This buffer must be of type
float
.
Library:
libscreenDescription:
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).
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