qt dvr

I. INTRODUCTION of QTQt is a cross-platform C + + graphical user Interface application Development framework developed by caused by parity technology in 1991. It can either develop GUI programs or be used to develop non-GUI programs, such as console tools and servers. QT is an object-oriented framework that uses special code generation extensions (called Meta Object Compiler, MOC) and some macros that are easy to extend and allow for component program

In Qt, the pure C ++ project is released as a dll method (detailed steps). qt detailed steps Directory General Creation Method Export methods and call methods of common functions Methods and call methods for exporting classes and their member functions As we all know, we canClass and FunctionExport to form a. dll file for use by other programs. The following describes how to use it in the

Qt entry routine (1), qt entry routine The following uses "Hello Qt" as an example to briefly introduce how to build a Qt project. 1 QLabel routine 1.1 Hello Qt #1 and #2 indicate the contained header file; #6. Create an Instance Object of the QApplication class, and enable

Qt DesignerIt provides programmers with visual design capabilities and can be used to develop all or part of forms in an application. To put it simply, cross-compilation is to generate executable code on one platform. The so-called platform actually contains two concepts: Architecture) and Operating System (Operating System ). The same architecture can run different operating systems. Likewise, the same operating system can run on different architectu

Due to the actual project requirements, Qt needs to be compiled into the LINUX-ARM version, the following is the entire operation process, the program written using Qt has been run on the actual development board, posted here, I hope I can help my friends in need. Preparations:Linux Kernel version:Linux 2.6.35-22-generic # 33-UbuntuCross-compilation tool:Arm-none-linux-gnueabi 4.4.1Qt installation package:

Respect the author, support the original, if you need to reprint, please attach the original address: http://blog.csdn.net/libaineu2004/article/details/46234079With QT development under Mac OS X, QT libraries and compilers need to be configured. The compiler can only use clang that Apple has developed on its own.1, respectively download and install Xcode and command line Tools (must be installed), after ins

To download the package in advance:1. Java SE develpoment Kit (JDK), version 6 or above;Http://download.oracle.com/otn-pub/java/jdk/7u60-b19/jdk-7u60-linux-i586.tar.gz? Authparam=1401337546_b496ffbe22fcb206d4dca0d56b44eddc2. Apache Ant 1.8.0 or above;http://mirror.bit.edu.cn/apache//ant/binaries/apache-ant-1.9.4-bin.tar.bz23. Android SDK;Http://dl.google.com/android/android-sdk_r22.6.2-linux.tgzHttp://dl.google.com/android/adt/22.6.2/adt-bundle-linux-x86-20140321.zip4. Android NDK (for QT5),http

>This tutorial focuses on using QT creator to create a small QT application for text search, which is a simplified version of the QT UI Tools text Finder example. The user interface of the application is built using QT Designer by the Qt widget, and the logic of the applicat

For a long time, the Qt has allowed the decorate your GUIs with CSS ' ish style sheets. Inspired by the web, stylesheets is a great a-to-stylize your Qt GUI, but it seems this few people use them. In this tutorial, we'll create an example dialog in Qt using Designer and stylesheets. This tutorial assumes so you can get the around in

qt Engineering Pro File template variables (templates) template variables Tell Qmake What kind of makefile is generated for this application. Here are the options to use: App-Build an app for makefile. This is the default value, so if the template is not specified, this will be used. Lib-Create a library of makefile. Vcapp-Create a Visual Studio project file for an application. Vclib-Create a Visual Studio project file for a libra

Qt entry routine (2), qt entry routine This document uses the QtConcurrent: run () function in Qt as an example to describe how to run a function in a separate thread. 1 QtConcurrent: run () QtConcurrent is a namespace that provides high-level interface functions (APIs) to automatically adjust the number of running threads of a program based on the actual number

After the first two studies, you can already create your own project using the QT Empty project template. Through this study, to organize the use of QT Engineering directory structure, make the project more standardized and easy to manage. The current directory structure As shown in the figure, this is the project created in the previous article, only main.cpp and Widget.cpp, widget.h three files, placed di

Recently, the GUI interface of the company project uses QT, the study of QT discovery in the last two months is really a problem, there are two main problems in this problem: "1" Chinese display; "2" Chinese garbled; The "1" problem occurs when the situation is: QT interface only the English alphabet, Chinese one is not displayed, and

Copyright Notice Respect Original Works. Reprinted, please maintain the integrity of the article, and in the form of a hyperlink to indicate the original author "tingsking18" and the main site address, so that other friends can ask and correct. Qt source code parsing (1) Qt creates window programs, message loops, and winmain Functions Qt source code analysis (2

A common mistake many C + + beginners make is to allocate a chunk of memory with malloc, new, and forget to release, causing a memory leak. The QT object model provides a parent-child relationship between Qt objects, and when many objects are set up in a certain order, the parent-child relationship is organized into a tree. When you delete a parent object, the QT

Many C/C ++ beginners often make the mistake of using malloc and new to allocate a piece of memory but forget to release it, resulting in Memory leakage. The QT object model provides a parent-child relationship between QT objects. When many objects establish this parent-child relationship in a certain order, they are organized into a tree. When deleting a parent object, QT's object model ensures that all it

Author: Dawei Cheng Dawei (Intel) (10 articles) Date: June 8, 2010 at pm This proposition is not very well answered, because the QT library is constantly updated, and the WebKit project in KDE is also released with a new version of release. As far as I know, I would like to share with you whether it is available or not. Let's take a look at what qtwebkit can do first, WebKit is an open-source browser engine with gecko (the typographical engine used by

This proposition is not very well answered, because the QT library is constantly updated, and the WebKit project in KDE is also released with a new version of release. As far as I know, I would like to share with you whether it is available or not. Let's take a look at what qtwebkit can do first, WebKit is an open-source browser engine with gecko (the typographical engine used by Mozilla Firefox) and Trident (also known as mshtml, the typographical en

According to the section "integrate custom widgets with QT designers" in Chapter 5th of C ++ GUI programming with QT 4, second edition, after the components generated by using the plug-in method are compiled using QT creator, the designers in QT creator cannot find them, however, you can find the plug-in by opening

In Ubuntu, how does one install the Qt environment? In Ubuntu, how does one develop Qt Creator? This article will describe these contents. First install Qt4 and use Qt Creator for development demonstration In Terminal, enter: sudo apt-get install qt4-dev-tools qt4-doc qt4-qtconfig qt4-demos qt4-designer ◆ The qt4-dev-tools includes