query_grayT_query_grayQueryGrayQueryGray (Operator)
Name
query_grayT_query_grayQueryGrayQueryGray — Query the displayable gray values.
Signature
Description
query_grayquery_grayQueryGrayQueryGrayQueryGray returns all gray values that are used for
gray value output (disp_imagedisp_imageDispImageDispImageDispImage) and that can be reproduced
exactly in the window. They can be set with the
set_grayset_graySetGraySetGraySetGray 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
WindowHandleWindowHandleWindowHandleWindowHandlewindowHandle (input_control) window → HWindow, HTupleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
GrayvalGrayvalGrayvalGrayvalgrayval (output_control) integer-array → HTupleHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Tuple of all displayable gray values.
Result
query_grayquery_grayQueryGrayQueryGrayQueryGray returns 2 (H_MSG_TRUE), if the window is
valid. Otherwise an exception is raised.
Possible Successors
set_grayset_graySetGraySetGraySetGray,
disp_regiondisp_regionDispRegionDispRegionDispRegion
See also
set_grayset_graySetGraySetGraySetGray,
disp_imagedisp_imageDispImageDispImageDispImage
Module
Foundation