destroyWindow (来自opencv)关闭所有窗口并停止c++程序

Question

我正在用c++编写一个实时视频处理程序，并希望能够切换具有相同mjpeg流的三个窗口，颜色、灰度和单色。我已经运行了所有的图像提要，但是，由于我的屏幕很小，我希望能够单独地切换它们。为了做到这一点，我编写了下面的代码，但是调用destroyWindow(“窗口名”)；而不是停止整个程序。我已经读过这些文档了，把空放在前面也没什么用。有人能告诉我我做错了什么吗？下面是代码(，它在一个无限循环中，直到下面看到的中断称为)：

    imshow("Color", imageColor);
    imshow("Monochrome", imageMonochrome);
    imshow("Grayscale", imageGrayscale);

    int keyPressed = waitKey(0);
    if (keyPressed > 0)
    {
        cout << keyPressed;
        cout << "key was pressed\n";
        // Press C to toggle color window
        if (99 == keyPressed)
        {
            if (colorOpen)
            {
                cout << "Color window closed\n";
                void destroyWindow("Color");
                colorOpen = false;
            }
            if (!colorOpen)
            {   
                cout << "Color window opened\n";
                imshow("Color", imageColor);
                colorOpen = true;
            }
        }

        // Press M to toggle monochrome window
        if (109 == keyPressed)
        {
            if (monochromeOpen)
            {
                cout << "Monochrome window closed\n";
                void destroyWindow("Monochrome");
                monochromeOpen = false;
            }
            if (!monochromeOpen)
            {
                cout << "Monochrome window opened\n";
                imshow("Monochrome", imagebw);
                monochromeOpen = true;
            }
        }

        // Press G to toggle grayscale window
        if (103 == keyPressed)
        {
            if (grayscaleOpen)
            {
                cout << "Grayscale window closed\n";
                void destroyWindow("Grayscale");
                grayscaleOpen = false;
            }
            if (!grayscaleOpen)
            {
                cout << "Grayscale window opened\n";
                imshow("Grayscale", image);
                grayscaleOpen = true;
            }
        }
        // Break out of infinite loop when [ESC] is pressed:   
        if (27 == keyPressed)
        {
            cout << "Escape Pressed\n";
            break;
        }
    }

Answer 1

您粘贴的代码在调用destroyWindow后终止(通过从main的末尾运行)。如果这不是您想要发生的情况，那么编写代码，在调用destroyWindow之后执行其他操作。也许你想要一个循环？