halcon-dev_set_window激活图形窗口

read_image (Image2, 'D:/bb/tu/ma.jpg')
dev_open_window(0,0,500,300,'black',WindowHandle)
dev_open_window(0,700,500,300,'black',WindowHandle1)

dev_set_window(WindowHandle)
*激活图形窗口
*参数：窗口句柄

dev_display(Image2)