qt3 to qt4

1) sudo apt-get install qt4-dev-tools qt4-doc qt4-qtconfig Qt4-demos Qt4-designerNote: Basically these bags can be loaded, not installed to run the input: sudo apt-get updateQt4-dev-tools includes tools such as QT Assistant and Qt linguist, so you do not need to install the

Use apt-get to install Qt4 in Ubuntu12.04. First: sudoapt-getinstalllibqt4-devlibqt4-dbglibqt4-guilibqt4-sqlqt4-dev-toolsqt4-docqt4-designerqt4-qtconfigSecond: Test personal instance create folder qt4hello (mkdi Install Qt4 using apt-get In Ubuntu 12.04. First: sudo apt-get install libqt4-dev libqt4-dbg libqt4-gui libqt4-sql qt4-dev-tools

QT is a cross-platform C ++ graphical user interface application framework developed by qique Technology in 1991. It provides the functions required for application developers to create an artistic graphical user interface. QT is easy to expand and allows true component programming. Basically, QT is the sameMotif, openwin, GTK and other graphic interface libraries and MFC, Owl, VCL, and ATL on Windows platforms are similar things. Pyqt is a toolkit for creating GUI applications. It is a successf

Preface?? The previous article said that I to solve the qaction icon can not display the problem of choosing to install the QT5, but after the installation, I recompile the source code, found a lot of errors, many Qt4 in the header files, Qt5 compiled said not found. After searching the internet, said Qt5 and Qt4 difference is still very big, Compatibility is not very good. Although there are some articles

1. Qt4 installation process $ sudoapt-getinstalllibqt4-devlibqt4-dbglibqt4-guilibqt4-sqlqt4-dev-toolsqt4-docqt4-designerqt4-qtconfig2. Pay attention to these two settings when creating a Qt4 project: Qt 'slocation:/usr "Debug/Release" op 1. Qt4 Installation Process$ Sudo apt-get install libqt4-dev libqt4-dbg libqt4-gui libqt4-sql

I started to learn QT these days and installed the qt4 designer. It is said that eclipse can also be used as the QT IDE, so I configured the QT development environment in eclipse (I can't stand the N multiple windows opened by QT designer ). Then I found an article on the Internet titled using eclipse to develop qt4 C ++ programs "Unknown. Problem: when creating a qt gui project, eclipse automatically

1.QT4 InstallationHardware platform: Intel X64Software platform: openSUSE 42.1$sudo zypper Update$sudo zypper in Qt-creator libqt4 libqt4-devel libqt4-sql libqt4-sql-mysql libqt4-sql-sqlite LIBQT4-SQL-X11LIBQTWEBKIT4 Libqtwebkit4-devel Qt4-x11-toolsThe 2.qt4 SDK consists of 1. Qt Creator (QT dedicated IDE)Features include the C + + code Editor, GUI appearance

Preface: The article includes GNOME,VNC-SERVER,QT4 installation configuration and integration;Apt-get update Apt-get upgrade;1,apt-get isntall vnc4server;2,apt-get install x-window-system-core;apt-get install GDM;Apt-get Install Ubuntu-desktop (also available for kubunut-desktop/xubuntu-desktop)Apt-get install Gnome-core;3,apt-get install qt4-dev-tools qt4-doc

Since QT officially did not release the precompiled 64-bit version of QT4, to use the 64-bit version of Qt4, can only compile themselves, the compilation process is as follows:1, download the source code and extract to D:\qt-src\qt-everywhere-opensource-src-4.8.6, the path must not have spaces2. Open the Visual Studio x64 Win64 Command Console and go to the appropriate directory.D:CD qt-src\qt-everywhere-op

I want to lazy borrow OpenCV own Videocapture class directly on arm Open the camera read data, failed .Baidu reason, need to compile the arm version of the OPENCV when the V4L2 support compiled, and it needs a lot of library support, to understand the details before it dawned on some of the OpenCV porting tutorial mentioned in the cross-compiling ffmpeg and other libraries, are the basis.Discard this scenario.two , continue to want to lazy, borrow online can find a variety of V4l2

, such as #include in the file of the #include 2) Add in the. Pro Project file:GreaterThan (Qt_major_version, 4): qt + = Widgets(to add qt + = widgets in versions higher than QT4, which means to use the Widgets module In fact, the direct write QT + = Widgets can, do not need to add: "GreaterThan (Qt_major_version, 4):". question two: Qt 5 uses the original QT4 project when Qwebview, Qwebframe

Document directory Power and performance for cross-platform applications New Integration with Visual Studio Qt for Windows available under open source license Availability Trolltech released the new version qt4 in June 28. It mainly improves heavyweight graphics systems, extended multithreading, and speed memory consumption. In addition, qt4 can be seamlessly integrated into vs. Net to create cross-pl

PrefaceBecause the company needs to do a Linux under the development of QT, coupled with direct contact with some QT, then began to cramming.Previously useful Qt wrote a 2048 game, about 3 April, that will be 2048 positive fire, think of oneself in the computer also did a ~ then silently wrote a, the interface is ugly, but perfectly formed ~ next time thinking and some code again induction, and then write to the blog.Although writing a small thing, but the foundation is still very thin, so in or

Tags: Log target four methods ever choose Execute Command Touchpad create catLinux Compiler QT4 Environment _omapl138There is a Dragon OMAPL138 board, I want to successfully transplant the QT environment and touch screen, this is my second time for the Linux QT Environment transplant, found a lot of problems, need to be re-organized. I compiled, Qt5 version above, the result is unsuccessful, always die in the PDA problem, in the Configure file to add-

Here we will not focus on the development of QT and the details in it. For Embedded Linux systems, it is very common to use a GUI. First of all, it involves the porting problem, you can only develop your own products after the migration. Of course, this step is not dead, but it is really necessary to do a good job of transplantation, and sometimes the process is not very easy. Today, I transplanted qt4 on the S3C2410 platform, and recorded the migrati