Qt based custom timeline scale control for video monitoring project

Background introduction At present, many PC security monitoring clients directly generate a time axis of the day when viewing the video. On the time axis, different color blocks will be used to mark which time periods of the day are recorded and which time periods are not recorded. It is clear at a gl ...

Posted on Mon, 20 Jan 2020 10:24:14 -0500 by gaogier

Sending packet of Socket network communication

Catalog 22.1 specific forms of packets sent by Socket 22.2 code design 22.3 code 22.1 specific format of packet sent by Socket In view of my painful experience of being wasted all afternoon by those bragging, I will make it clear that my blog is based on the structure form, the client request ...

Posted on Mon, 20 Jan 2020 09:04:11 -0500 by lordrain11

Simple TCP client program based on QTcpsocket

Code connection: Local path (for Copy code): H disk / Baidu online disk: / program backup / QT/QT_EasyClient.zip 1. introduction In fact, the [QTcpsocket](https://doc.qt.io/archives/qt-5.6/qtcpsocket.html) in the Qt network module has been well encapsulated, avoiding the tedious process of programming ...

Posted on Fri, 17 Jan 2020 09:49:33 -0500 by Joe

SDL2 renders QT window across processes, and the screen does not adjust automatically according to the window size

Background description Use QT to create a video window, use WEBRTC protocol to receive data and decode it, use SDL2 to render YUV data, in which QT process and SDL are in a cross process rendering process. When SDL uses "software" to drive rendering, if the window size changes, the rendered im ...

Posted on Thu, 16 Jan 2020 13:02:01 -0500 by chaking

qt install qmatt library steps, personal experience, record

A few days ago, I wanted to simulate the connection between Internet of things terminals and Alibaba cloud on win10 computer. I wanted to find a software tool to try, but I had to pay for it... I can't find the right one! ε = ('οο ')) well, I have to do it myself. After think ...

Posted on Thu, 16 Jan 2020 10:00:44 -0500 by adzie

Transplantation of ARM-ZYNQ platform of Qt5.8 and touch Tslib-1.4 Library

This section mainly introduces the compilation and migration of Tslib-1.4 library, the next section mainly introduces the migration of Qt5.8, and the docking of Qt5.8 and Tslib-1.4 to realize the touch function on Qt; 1, Development environment and tools PC system: Linux version 4.10.0-38-generic (built ...

Posted on Mon, 13 Jan 2020 22:45:15 -0500 by irishpeck

Summary of common skills in Salesforce Apex (continuous update)

Preface The blogger is also a Salesforce Apex, who has been working for a long time. I would like to share the useful knowledge and the knowledge I usually refer to with you. summary 1. When using SOQL statement to query, only 'single quotation mark' can be used for string type, otherwise an err ...

Posted on Sun, 12 Jan 2020 21:35:52 -0500 by tmc01

QT homework student information management system

There are ten thousand wine fights in gold cups and ten thousand money in jade plates. I can't eat when I stop the cup, and I'm at a loss when I draw my sword. If you want to cross the Yellow River, you will climb the Taihang snow covered mountain. When I came here to fish in Bixi, I suddenly dreamed o ...

Posted on Sun, 12 Jan 2020 03:36:09 -0500 by Kano

Python GUI development practice: picture conversion sketch tool!

There is no end to struggle ! Study hard 72 changes, because in the future No one can stop 81 for you. Life is like an ant, when there is ambition; Life is as thin as paper, which should be unyielding. ​ I was touched by this sentence today, so I will share it with you at the beginning. Chicken soup is poisonous, but sometimes we rely on it ...

Posted on Thu, 09 Jan 2020 07:52:23 -0500 by infolock

DOM reading xml in Qt5

http://www.qter.org/portal.php?mod=view&aid=59 Dom (Document Object Model) transforms the XML document into a tree structure that the application can traverse, so that the nodes in it can be accessed randomly. Its disadvantage is that it needs to read the whole XML document into memory, which consumes more memory. In Qt, the QDomProcessin ...

Posted on Fri, 03 Jan 2020 17:37:15 -0500 by changeback