you change the platform, the Code must be rewritten ).
Qtopia (qpe) is an embedded desktop for PDA, which contains a series of applications. You can also put your QT program in qpe and allow the program by clicking the mouse or touch screen.
QtAnd qtopia InstallationIf you need to install a qtopia platform with frambuffer, you need the following software (the listed software is used by the author as an example ):◆ Qtopia 1.6.0;◆ Tmake 1.11 (or later)
: "#808080"; border.width: 2; radius: 12;}
You can modify the main. qml file of HelloQtQuickApp to view the effect, or create a new project.
The above Rectangle object, weColor
For color values, you can use color names in QML, such as blue/red/green/transparent, or "# RRGGBB" or "# AARRGGBB, you can also use Qt. rgba ()/Qt. lighter () and so on. For more i
)
2.0, QT 4.7.0 and QT creator Beta
. The first QT quick program (qml Program)
33. Experience the qml demo
34. Introduction to QT quick designer
Qml Components
Image and borderimage of the qml Project
37. flipable, flickable, and state and animation
38. qml View
39. qtdeclar
reduces system efficiency. In another case, if the thread waits for most of the time (such as waiting for a return or reading the hard disk), a slight increase in the number will indeed increase the efficiency.
So to sum up:
How to create and use threads in Qt is very simple. It can be divided into three steps:
(1) first, create a Qt command line project and cre
1. Download and install QT
Go to the QT website (http://trolltech.com/developer/downloads/qt overview, download qt-win-opensource-4.3.2-mingw.exe directly, install it. This version has integrated the compilation environment mingw (Note: Only the compiling environment does not include IDE, and eclipse is the real IDE).
: make–k–j 4, then I saw the System Monitor CPU directly to 100%.The build is complete, and make install is ready. Of course, as a Linux system, you need to pay attention to folder permissions issues ... Well, if you don't understand the problem, I think you need to do a little bit more on Linux.6. How to statically compile a programIn the pro file, addCONFIG +=static orCONFIG +=staticlib, depending on your project type.This allows the compiler to try
installation process is relatively simple, it is omitted here. The final standard is that you can run the built-in example of qt. In fact, these examples are pretty, and they are cross-platform.
Write the first qt program and create a directory, such as d:/qt/study/hello, and then create a main program. cpp empty file, start to write code, in fact, the simplest
Gdb-7.5-i686_winxp.zipWin7 Download qtcreator-gdb-7.4-mingw32_nt-6.1-i686.tar.gzDownload down, is a folder, I copied the folder to the C:\MinGW\bin, hit the breakpoint can be debugged.At this point, the environment was built successfully.
Can not be written to the environment variable: C:\Qt\4.8.6\bin; C;\mingw\bin;
QT development tool selection, generally do not choose Eclipse, why I do not k
immediately (source ~/.BASHRC), which qmake to see if the setting is successful:Next, we will automatically generate the project file through the Qmake project, then generate the makefile through the project file, and then compile the source code into an executable program by make parsing makefile instructions:1) generate the required engineering documents:Qmake
qt Quick Dive (or QT engineering documentation)
Learn and use QT for a while, and do some simple reviews.
QT is an open-source GUI software framework for Nokia, which is itself based on C + +. The efficiency is very high, not only for mobile application development, but also to open desktop applications. Integration of
–k–j 4, then I saw the System Monitor CPU directly to 100%.The build is complete, and make install is ready. Of course, as a Linux system, you need to pay attention to folder permissions issues ... Well, if you don't understand the problem, I think you need to do a little bit more on Linux.6. How to statically compile a programIn the pro file, addCONFIG +=static orCONFIG +=staticlib, depending on your project type.This allows the compiler to try to fi
existing part, or to design a new style of interface from scratch, there's a new way to do it. This chapter includes ways to set the look and look of the application, how to integrate the style sheet with Qt Designr, how to subclass the Qstyle class, how to change the application's perception without using a stylesheet, and so on.
The 10th chapter "using. ui files in a program." This chapter explains how to integrate the. ui file into the
If there is a mistake, please criticize ...
Qt for embeded Linux
Here, http://doc.qt.io/qt-5/embedded-linux.html.QT no longer contains its own windowing system (QWS) implementation since the release of QT 5.0. For single process use cases, Qt Platform abstraction is an excellent solution. Wayland can support multiple
. The ability to share code across platforms means that developers are developing applications that are faster to market and will have a wider range of device user groups.The new QT API Technology Preview version of the QT Mobility Project is also available today. These cross-platform APIs provide developers with a variety of features, such as positioning capabil
. The 32bit version detected above is the 2 binary version I used before.Next, switch to the Build Suite (kit) Tab:If you add it without adding it, make sure the following settings are correct. The debugger does not have to worry about the first item.3. Configuring the DebuggerUsing the QT Creator + Visual C + + compiler to develop QT applications, the default is no debugger, the official said can use CDB,
QT is a cross-platform, C + + graphical user interface application framework. (not just C + +, but also QML,QQUICK,HTML5) it provides the functionality that application developers need to build an art-level graphical user interface. QT is completely object-oriented, easy to scale, and allows for true component programming.QT Creator cross-platform Qt IDE,
-opensource-xxx! qt/e, Qtopia-core, Qt-embedded-opensource (same bird): qt in the first time, for Linux and UNIX systems, Only version X11 built on top of Xlib. However, with the application of Linux operating system in the field of embedded becoming more and more widespread, QT introduced the embedded version
I. Installation
1. Download a qtsource package that can be used in Windows environment on trolltech.com, such as qt-win-opensource-src-4.3.4.zip, and decompress it (for example, extract it to F:/Qt-4.3.4)
2. add system environment variables, add the bin path of QT (F:/Qt-4.3.4/bin) in path, add the new variable qtdir
downloaded and installed on the PC. We recommend that you use VS2012 or a later version.
Qt Official Website: http://www.qt.io/download-open-source/ according to VS version selection suitable for their own Qt version, for example, due to the difference between Qt5 and Qt4, the current general Qt5.0 or above version
Download and install it directly.
Step 2 configure the Compiler
Open the
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