Question

有没有办法将OpenCV窗口设置为始终位于顶部？我可以从窗口中删除最小化和关闭按钮吗？谢谢。

Answer 1

您可以使用： cvGetWindowHandle（）获得Widows处理程序。然后使用常规的Windows API，你可以做任何你喜欢的事情

Answer 2

我找到了发表在评论中的最佳解决方案：Python OpenCV open window on top of other applications

例如，打开一个窗口后，只需在下面添加命令即可。

cv2.namedWindow('img_file_name', cv2.WINDOW_NORMAL) # Creates a window
os.system('''/usr/bin/osascript -e 'tell app "Finder" to set frontmost of process "python" to true' ''') # To make window active

以小写形式使用“ python”。我在一些答案中发现，使用“ Python”给我一个错误：

21:62: execution error: Finder got an error: Can’t set process "Python" to true. (-10006))

Answer 3

我发现我所要做的只是将主窗口设置为全屏，然后恢复正常。

    #!/usr/bin/env python
    import cv2
    import numpy

    WindowName="Main View"
    view_window = cv2.namedWindow(WindowName,cv2.WINDOW_NORMAL)

    # These two lines will force your "Main View" window to be on top with focus.
    cv2.setWindowProperty(WindowName,cv2.WND_PROP_FULLSCREEN,cv2.WINDOW_FULLSCREEN)
    cv2.setWindowProperty(WindowName,cv2.WND_PROP_FULLSCREEN,cv2.WINDOW_NORMAL)

    # The rest of this does not matter. This would be the rest of your program.
    # This just shows an image so that you can see that this example works.
    img = numpy.zeros((400,400,3), numpy.uint8)
    for x in range(0,401,100):
        for y in range(0,401,100):
            cv2.line(img,(x,0),(0,y),(128,128,254),1)
            cv2.line(img,(x,399),(0,y),(254,128,128),1)
            cv2.line(img,(399,y),(x,399),(128,254,128),1)
            cv2.line(img,(399,y),(x,0),(254,254,254),1)
    cv2.imshow(WindowName, img)
    cv2.waitKey(0)
    cv2.destroyWindow(WindowName)

Answer 4

对我来说，这在 macOS 中运行良好，我认为它在另一个操作系统中运行良好

destroyWindow( "windowName" );
namedWindow( "windowName", WINDOW_NORMAL );
moveWindow( "windowName", posx, posy );
imshow( "windowName", frame );

这个循环重复，顺序是：

销毁窗口，强制创建新窗口
声明新窗口
将窗口移动到您想要的位置，例如最后位置
显示窗口

OpenCV窗口始终位于顶部

4 个答案: