get_window_background_imageT_get_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image (Operator)
Name
get_window_background_imageT_get_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image — Gets a copy of the background image of the HALCON window.
Signature
def get_window_background_image(window_handle: HHandle) -> HObject
Description
get_window_background_imageget_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image returns a copy of the background image
BackgroundImageBackgroundImageBackgroundImagebackgroundImagebackground_image set in the window WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle.
This operator is specially useful in cases where
the user would like to perform some operations in one of the callback
functions of a drawing object attached to the window. See
set_drawing_object_callbackset_drawing_object_callbackSetDrawingObjectCallbackSetDrawingObjectCallbackset_drawing_object_callback for more details.
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
BackgroundImageBackgroundImageBackgroundImagebackgroundImagebackground_image (output_object) (multichannel-)image → objectHImageHObjectHObjectHobject * (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)
Copy of the background image.
WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
Result
If the window exists and the specified parameters are correct
get_window_background_imageget_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image returns 2 (
H_MSG_TRUE)
. If necessary an
exception is raised.
Possible Predecessors
attach_background_to_windowattach_background_to_windowAttachBackgroundToWindowAttachBackgroundToWindowattach_background_to_window
Possible Successors
close_windowclose_windowCloseWindowCloseWindowclose_window,
detach_background_from_windowdetach_background_from_windowDetachBackgroundFromWindowDetachBackgroundFromWindowdetach_background_from_window,
attach_drawing_object_to_windowattach_drawing_object_to_windowAttachDrawingObjectToWindowAttachDrawingObjectToWindowattach_drawing_object_to_window
See also
attach_background_to_windowattach_background_to_windowAttachBackgroundToWindowAttachBackgroundToWindowattach_background_to_window,
detach_drawing_object_from_windowdetach_drawing_object_from_windowDetachDrawingObjectFromWindowDetachDrawingObjectFromWindowdetach_drawing_object_from_window
Module
Foundation