Programmer Think

Now the mainstream browsers all support WebRTC, through getUserMedia, you can easily open the camera in the browser. Web developers can use JavaScript to develop barcode scanning applications for web pages. Through the tests of chrome and safari, it is found that when JS code takes a lot of time, the video in Chrome is still smooth, while Safar ...

Qt's docked window QDockWidget class General process for setting up docked windows 1. Create a docking window for the QDockWidget object 2. To set the properties of this docked form, you usually call setFeatures() and setAllowAreas() 3. Create a new control to insert a docked window. The commonly used controls are QListWidget and QTextEdit 4. I ...

The origin of the problem, referring to the handwriting input under winform, realizes the same function under wpf. At last, it is found that the handwritten input cannot be done in the characteristic area. The reason for the problem is that the handle of the control obtained under wpf is the same as that of the whole form. Fin ...

Use NTSD program (if you have installed VS, in the VS installation directory, such as "C: \ program files (x86)," debugging tools for windows (x86), "ntsd.exe", or Download here) ntsd -c q -p PID ntsd -c q -pn PName Two methods One is to use the ID number of the process and replace the PID with the corresponding process ID ...

In this chapter, we officially launch our crawler project. First of all, we need to know which website can get free agent IP. At present, there are popular websites such as Xisi agent and fast agent. Here we take Xisi agent as an example. Official website of West stab agent: http://www.xicidaili.com Here are free IP addresses and port ...

[TOC] Introduction The data generated in the process of application running is stored in memory at first. If you want to save it permanently, you must save it in the hard disk. If the application wants to operate the hardware, it must pass the operating system, and the file is the virtual concept that the operating system provides to the appli ...

1. Make your own tomato clock On a PC I've been using "Little Tomato" as my tomato clock software, and I turn it on and maximize it on my secondary monitor so that not only does it do its part, but I can also tell my colleague that I'm working hard.But I always wanted to write a tomato clock software by myself. It was so itchy that I ...

Put the finished product drawing first: The user's registration interface is actually composed of several input boxes (EditText) and TextView. The key point is that the entered phone number and email can be recognized and displayed in the way of hyperlink. After clicking, the corresponding software will be opened. In fact, i ...

What is http protocol http protocol: Format Specification for data transmission between browser client and server Tools for viewing the http protocol 1) Use Firefox's firebug plug-in (right click > firebug > Network) 2) Use Google's "censorship element" http protocol content Request (browser->Server) G ...

Scrapy Introduction Scrapy introduction 1.Scrapy is an application framework written in pure Python for crawling website data and extracting structural data. It is widely used 2. The power of the framework, users only need to customize and develop a few modules to easily realize a crawler, which is used to grab web content and various pictures ...