Operator Reference

HALCON Operator Reference / Graphics / Window

• HDevelop
• .NET
• Python
• C++
• C

ClassesClasses | | Operators

clear_windowT_clear_windowClearWindowClearWindowclear_window (Operator)

clear_windowT_clear_windowClearWindowClearWindowclear_window — Delete the contents of an output window.

Signature

clear_window( : : WindowHandle : )

Herror T_clear_window(const Htuple WindowHandle)

void ClearWindow(const HTuple& WindowHandle)

void HWindow::ClearWindow() const

static void HOperatorSet.ClearWindow(HTuple windowHandle)

void HWindow.ClearWindow()

def clear_window(window_handle: HHandle) -> None

Description

clear_windowclear_windowClearWindowClearWindowclear_window deletes all entries in the output window. The window (background and edge) is reset to its original state. Parameters assigned to this window (e.g., with set_colorset_colorSetColorSetColorset_color, set_paintset_paintSetPaintSetPaintset_paint, etc.) remain unmodified.

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

WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control)  window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Window handle.

Result

If the output window is valid clear_windowclear_windowClearWindowClearWindowclear_window returns 2 ( H_MSG_TRUE) . If necessary an exception is raised.

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowopen_window

Alternatives

clear_rectangleclear_rectangleClearRectangleClearRectangleclear_rectangle, disp_rectangle1disp_rectangle1DispRectangle1DispRectangle1disp_rectangle1

See also

open_windowopen_windowOpenWindowOpenWindowopen_window

Module

Foundation

---

ClassesClasses | | Operators