qt tutorial for beginners

need a snail girl to help them, this snail girl is what we just said 水缸 ! Upstream to send events to the tank, downstream from the tank to take the event to deal with, so when the upstream event speed too fast, downstream take the event speed is too slow, the tank will quickly fill, and then overflow out, In the end it was oom.These two cases are represented by a picture as follows:Synchronous:Synchronize. pngAsynchronous:Asynchronous. pngWe can see that 同步和异步 the difference is only in whether

(request): #获取前端post过来的用户名和密码 name = request.POST.get(‘name‘,None) password = request.POST.get(‘password‘,None) #把用户和密码组装成字典 data = {‘name‘:name,‘password‘:password} list.append(data) return render(request,‘index.html‘,{‘form‘:list})#通过render模块把index.html这个文件返回到前端，并且返回给了前端一个变量form，在写html时可以调用这个form来展示list里的内容Running the server again through the browser will have the effect of presenting the data in real time.Here we have completed a simple Web page production process, there

The code is not analyzed here because it is enough in the tutorial. If you are interested, you can check the code yourself. This tutorial comes from the original neheopengl Chinese tutorial (http://www.yakergong.net/nehe/), but it has a bad place, that is, when I go to see, it can not download the code ~~~~ Maybe my character is poor. It can be used as a referenc

[QT Tutorial] 30th XML (iv) using stream to read and write XMLLandlord posted on 2013-5-22 13:03:33 |Views: 611 | Replies: 0 Using streams to read and write XMLCopyright notice this article original in the author Yafeilinux, reproduced please indicate the source.Introductory lead introduced two new classes from QT 4.3 to read and write XML documents: Q

corresponding type through the conversion function, as shown in figure QDomElemente=n.toElement(); If you only want to read and display the entire XML file, it is a good choice, because it provides a simpler interface than DOM, and it does not need to read the entire XML file into the memory at a time, this can be used to read large files. The QtXml module of Qt provides a QXmlSimpleReader class, which is a SAX-based XML parser. This parser is

Qt tutorial 1-14 steps in total This tutorial describes how to use the QT toolkit for graphic user interface programming. It does not cover everything: It emphasizes teaching a programming idea of graphical user interface programming, and introducing QT features is also nec

1. OverviewQcustomplot is a super ultra-compact Qt drawing class, very beautiful, very easy to use, Only need to add a qcustomplot.h and qcustomplot.cpp files can be used, far more convenient and beautiful than QWT, you can use the two source files themselves can also be compiled into library files, very convenient.Official website: http://www.qcustomplot.com/1.0:http://download.csdn.net/detail/czyt1988/5986701Here's a look at its super-powerful featu

Qt for Android development example tutorial This article describes how to use Qt5.3.0 to develop Android applications. Due to a small amount of official information, we will record the problems encountered during the development process and solutions. The procedure is as follows: 1. Only qml MediaPlayer can be used for video playback on the Android platform. 2. file: // For example: Image{ source:"