screen_get_display_property_iv()
Graphics and Screen4.0 (8.x)Screen Graphics Subsystem Developer's GuideAPIProgrammingUtilities
Retrieve the current value of the specified display property of type integer
Synopsis:
#include <screen/screen.h>
int screen_get_display_property_iv(screen_display_t disp,
int pname,
int *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
int
. The buffer may be a single integer or an array of integers, depending on the property being retrieved.
Library:
libscreenDescription:
Function Type: Flushing Execution
This function stores the current value of a display property in a user-provided buffer.
The values of the following properties can be retrieved using this function:
- SCREEN_PROPERTY_ATTACHED
- SCREEN_PROPERTY_BLUE_GAMMA_CURVE [2]
- SCREEN_PROPERTY_BRIGHTNESS
- SCREEN_PROPERTY_CBABC_MODE
- SCREEN_PROPERTY_CHROMATICITY_COORDS
- SCREEN_PROPERTY_CONTRAST
- SCREEN_PROPERTY_DETACHABLE
- SCREEN_PROPERTY_DPI
- SCREEN_PROPERTY_FOCUS
- SCREEN_PROPERTY_FORMATS
- SCREEN_PROPERTY_FORMAT_COUNT
- SCREEN_PROPERTY_GAMMA [2]
- SCREEN_PROPERTY_GREEN_GAMMA_CURVE [2]
- SCREEN_PROPERTY_HUE
- SCREEN_PROPERTY_ID [1]
- SCREEN_PROPERTY_IDLE_STATE
- SCREEN_PROPERTY_INTENSITY
- SCREEN_PROPERTY_KEEP_AWAKES
- SCREEN_PROPERTY_METRIC_COUNT [1]
- SCREEN_PROPERTY_MIRROR_MODE
- SCREEN_PROPERTY_MODE_COUNT
- SCREEN_PROPERTY_NATIVE_RESOLUTION
- SCREEN_PROPERTY_OWNER_PID [1]
- SCREEN_PROPERTY_PERMISSIONS
- SCREEN_PROPERTY_PHYSICAL_SIZE
- SCREEN_PROPERTY_POSITION
- SCREEN_PROPERTY_POWER_MODE
- SCREEN_PROPERTY_PROTECTION_ENABLE
- SCREEN_PROPERTY_RED_GAMMA_CURVE [2]
- SCREEN_PROPERTY_ROTATION
- SCREEN_PROPERTY_SATURATION
- SCREEN_PROPERTY_SCALE_FACTOR [1]
- SCREEN_PROPERTY_SEQUENCE_ID
- SCREEN_PROPERTY_SIZE
- SCREEN_PROPERTY_SOURCE_SIZE
- SCREEN_PROPERTY_TECHNOLOGY
- SCREEN_PROPERTY_TRANSPARENCY
- SCREEN_PROPERTY_TYPE
- SCREEN_PROPERTY_VIEWPORT_POSITION
- SCREEN_PROPERTY_VIEWPORT_SIZE
- SCREEN_PROPERTY_WINDOW_MANAGER_ID
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 get set this property.
Returns:
0
if successful, or -1
if an error occurred (errno
is set; refer to errno.h
for more details).
Page updated: