dev_set_windowT_dev_set_windowDevSetWindowDevSetWindowdev_set_window (Operator)

Name

dev_set_windowT_dev_set_windowDevSetWindowDevSetWindowdev_set_window — Activate a graphics window.

Signature

dev_set_window( : : WindowHandle : )

Description

dev_set_windowdev_set_windowDevSetWindowDevSetWindowdev_set_window activates the graphics window with the passed window handle. This is equivalent to pressing the Active button in the tool bar of the graphics window.

Attention

Using the code export feature of HDevelop, the code that is generated for this operator may have a different behavior than the related HALCON operator. For a detailed description of the code export of HDevelop graphics operators into the different programming languages see in the “HDevelop User's Guide” the chapter Code Export -> General Aspects of Code Generation -> Graphics Windows.

Parameters

WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → (handle)

Window handle.

Example (HDevelop)

dev_open_window (1, 1, 200, 200, 'black', WindowID1)
dev_open_window (1, 220, 200, 200, 'black', WindowID2)
read_image(Image,'monkey')
dev_set_window(WindowID1)
dev_display(Image)
dev_set_window(WindowID2)
dev_display(Image)

Result

If the values of the specified parameters are correct, dev_set_windowdev_set_windowDevSetWindowDevSetWindowdev_set_window returns 2 ( H_MSG_TRUE) . Otherwise, an exception is raised and an error code returned.

Possible Predecessors

dev_open_windowdev_open_windowDevOpenWindowDevOpenWindowdev_open_window

Possible Successors

dev_displaydev_displayDevDisplayDevDisplaydev_display

Module

Foundation

Operators