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

Question

我正在用 C++ 编写实时视频处理程序，并希望能够在彩色、灰度和单色模式下切换具有相同 mjpeg 流的三个窗口。我的所有图像源都在运行，但是，由于我的屏幕很小，我希望能够单独打开和关闭它们。为此，我编写了下面的代码，但调用了 destroyWindow("[windowname]");相反，停止整个程序。我已经阅读了文档，将 void 放在它前面并没有帮助。谁能告诉我我做错了什么？这是代码(它处于无限循环中，直到您在下方看到的中断被调用):

---

    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(通过运行 main 的末尾)。如果这不是您想要发生的情况，请编写在调用 destroyWindow 之后执行其他操作的代码。也许你想要一个循环？