OpenCV:如何强制图像窗口出现在其他窗口之上? [英] OpenCV: how to force the image window to appear on top of other windows?

问题描述

使用 cvShowImage，可以轻松地在 OpenCV 中显示图像.但是，您如何告诉 OpenCV 在每个其他窗口的顶部显示该窗口?

Using cvShowImage, one can easily show an image in OpenCV. However, how do you tell OpenCV to show the window on top of every other window?

我在显示图像时运行全屏 OpenGL 应用程序.OpenCV 窗口第一次在我的应用程序窗口顶部弹出，但是如果我单击我的应用程序窗口(即，将焦点返回给它)，那么我无法让 OpenCV 回到顶部OpenGL 窗口，即使在销毁和重新创建窗口时也是如此.

I run a full screen OpenGL application while showing images. The first time the OpenCV window pops up on top of my application window, but if I click on the window of my application (i.e. give focus back to it), then I can't manage to have the OpenCV come back on top of the OpenGL window, even when destroying and recreating the window.

我每次都想重命名窗口，但还有其他方法吗?

I thought of renaming the window each time, but is there another way to do it?

推荐答案

OpenCV 没有本地方法可以做到这一点(我知道).

答案取决于平台.如果您的目标是 Windows，请查看此答案，然后查看this 和 这个肯定会有用.

The answer is platform dependent. If your target is Windows, check this answer and then this and this will certainly be useful.

如果您使用的是 Linux，则需要查看 OpenCV 是如何编译的，并检查其构建在什么系统上(可能是 GTK+ 2.x).然后，自己做一些研究.

If you are on Linux, you need to take a look at how OpenCV was compiled and check what system its built on (probably GTK+ 2.x). Then, do some research of your own.

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