get_window_background_imageT_get_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image (算子名称)
名称
get_window_background_imageT_get_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image — Gets a copy of the background image of the HALCON window.
参数签名
def get_window_background_image(window_handle: HHandle) -> HObject
描述
get_window_background_imageget_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image returns a copy of the background image
BackgroundImageBackgroundImageBackgroundImageBackgroundImagebackgroundImagebackground_image set in the window WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_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_callbackSetDrawingObjectCallbackSetDrawingObjectCallbackSetDrawingObjectCallbackset_drawing_object_callback for more details.
运行信息
- 多线程类型:可重入(与非独占操作符并行运行)。
- 多线程作用域:全局(可以从任何线程调用)。
- 未经并行化处理。
参数表
BackgroundImageBackgroundImageBackgroundImageBackgroundImagebackgroundImagebackground_image (output_object) (multichannel-)image → objectHImageHObjectHImageHobject * (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)
Copy of the background image.
WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Window handle.
结果
If the window exists and the specified parameters are correct
get_window_background_imageget_window_background_imageGetWindowBackgroundImageGetWindowBackgroundImageGetWindowBackgroundImageget_window_background_image returns 2 (
H_MSG_TRUE)
. If necessary an
exception is raised.
可能的前置算子
attach_background_to_windowattach_background_to_windowAttachBackgroundToWindowAttachBackgroundToWindowAttachBackgroundToWindowattach_background_to_window
可能的后置算子
close_windowclose_windowCloseWindowCloseWindowCloseWindowclose_window,
detach_background_from_windowdetach_background_from_windowDetachBackgroundFromWindowDetachBackgroundFromWindowDetachBackgroundFromWindowdetach_background_from_window,
attach_drawing_object_to_windowattach_drawing_object_to_windowAttachDrawingObjectToWindowAttachDrawingObjectToWindowAttachDrawingObjectToWindowattach_drawing_object_to_window
参考其它
attach_background_to_windowattach_background_to_windowAttachBackgroundToWindowAttachBackgroundToWindowAttachBackgroundToWindowattach_background_to_window,
detach_drawing_object_from_windowdetach_drawing_object_from_windowDetachDrawingObjectFromWindowDetachDrawingObjectFromWindowDetachDrawingObjectFromWindowdetach_drawing_object_from_window
模块
Foundation