dev_set_windowT_dev_set_windowDevSetWindowDevSetWindowdev_set_window (算子)

名称

dev_set_windowT_dev_set_windowDevSetWindowDevSetWindowdev_set_window — 激活图形窗口。

签名

dev_set_window( : : WindowHandle : )

描述

dev_set_windowdev_set_windowDevSetWindowDevSetWindowDevSetWindowdev_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.

注意

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.

参数

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (输入控制) window → (handle)

窗口句柄。

示例（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)

结果

If the values of the specified parameters are correct, dev_set_windowdev_set_windowDevSetWindowDevSetWindowDevSetWindowdev_set_window 返回 2 ( H_MSG_TRUE )。否则，将抛出一个异常并返回错误代码。

可能的前趋

dev_open_windowdev_open_windowDevOpenWindowDevOpenWindowDevOpenWindowdev_open_window

可能的后继

dev_displaydev_displayDevDisplayDevDisplayDevDisplaydev_display

模块

基础

算子