query_grayT_query_grayQueryGrayQueryGrayquery_gray (Operator)
Name
query_grayT_query_grayQueryGrayQueryGrayquery_gray — Query the displayable gray values.
Signature
Description
query_grayquery_grayQueryGrayQueryGrayQueryGrayquery_gray returns all gray values that are used for
gray value output (disp_imagedisp_imageDispImageDispImageDispImagedisp_image) and that can be reproduced
exactly in the window. They can be set with the
set_grayset_graySetGraySetGraySetGrayset_gray call.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Parameters
WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
GrayvalGrayvalGrayvalGrayvalgrayvalgrayval (output_control) integer-array → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Tuple of all displayable gray values.
Result
query_grayquery_grayQueryGrayQueryGrayQueryGrayquery_gray returns 2 (H_MSG_TRUE), if the window is
valid. Otherwise an exception is raised.
Possible Successors
set_grayset_graySetGraySetGraySetGrayset_gray,
disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region
See also
set_grayset_graySetGraySetGraySetGrayset_gray,
disp_imagedisp_imageDispImageDispImageDispImagedisp_image
Module
Foundation