dev_close_window — Close the active graphics window.
dev_close_window( : : : )
dev_close_window closes the active graphics window which has been opened by dev_open_window, a suitable menu entry, or automatically by HDevelop itself at program start or after loading a new program (default window).
The operator is equivalent to pressing the Close button in the title bar of the active window or selecting the appropriate menu entry from the visualization menu.
A graphics window can be activated by calling dev_set_window or by pressing the Activate button in the tool bar of the selected graphics window.
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.
* close all windows for i := 1 to 10 by 1 dev_close_window () endfor read_image (For5, 'for5') get_image_size (For5, Width, Height) dev_open_window (0, 0, Width, Height, 'black', WindowHandle) dev_display (For5)
dev_close_window returns always 2 (H_MSG_TRUE).