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Recently, I learned PyQt5 programming and encountered a problem, which is the cleaning of QThreadPool. Specifically, I sometimes need to stop the execution of all threads in a QThreadPool and do the necessary cleaning. Sometimes there are two main scenarios here: because the new input QThreadPool needs to be cleaned up and start with the new in ...

Starting from this chapter, we begin to learn Qt widgets, in which each type of widget is selected as an example to explain their usage. Through the example, you can draw inferences from one instance. This chapter is also pure code programming and does not use Qt Designer graphical interface to develop programs. In this chapter, we can lea ...

I. Preface The navigation progress bar control is actually the progress control of Alipay, Jingdong and Taobao order page. It prompts the steps of the current step, a total of several steps, and then the current progress special color display, each progress with time text and other information, this control specifically integrates the three sty ...

I. Preface In the ordinary writing process, it is often necessary to capture some action and effect maps into gif format, which makes the information covered more comprehensive and vivid. Sometimes, the whole operation process and operation effect can be recorded into MP4, but the file size is relatively large, and many websites are not easy to ...

Taking the QtConcurrent::run() function in Qt as an example, this paper introduces how to run the function in a single thread. 1  QtConcurrent::run() QtConcurrent is a namespace that provides a high-level interface function (APIs) to automatically adjust the number of threads running according to the actual number of CPU s in the current comput ...