screen_get_context_property_iv()
Graphics and Screen4.0 (8.x)Screen Graphics Subsystem Developer's GuideAPIProgrammingUtilities
Retrieve the current value of the specified context property of type integer
Synopsis:
#include <screen/screen.h>
int screen_get_context_property_iv(screen_context_t ctx,
int pname,
int *param)
Arguments:
- ctx
- The handle of the context 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 context property in a user-provided buffer.
The values of the following properties can be retrieved using this function:
- SCREEN_PROPERTY_DEVICE_COUNT [1]
- SCREEN_PROPERTY_DISPLAY_COUNT [1]
- SCREEN_PROPERTY_GROUP_COUNT [1]
- SCREEN_PROPERTY_ID [1]
- SCREEN_PROPERTY_IDLE_STATE
- SCREEN_PROPERTY_OWNER_PID [1]
- SCREEN_PROPERTY_PERMISSIONS
- SCREEN_PROPERTY_PIXMAP_COUNT [1]
- SCREEN_PROPERTY_SEQUENCE_ID
- SCREEN_PROPERTY_SESSION_COUNT [1]
- SCREEN_PROPERTY_STATUS
- SCREEN_PROPERTY_STREAM_COUNT [1]
- SCREEN_PROPERTY_TYPE
- SCREEN_PROPERTY_WINDOW_COUNT [1]
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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