Revision as of 20:52, 24 May 2013

Uses

http://www.omgubuntu.co.uk/2013/03/unity-next-project-announced
RStudio is written in the C++ programming language and uses the Qt framework for its graphical user interface. See http://en.wikipedia.org/wiki/RStudio, http://support.rstudio.org/help/discussions/suggestions/3154-rstudio-and-qt-5 and Linux platform or Windows platform.
Qt is used in a lot of places. See some example in wikipedia. Some famous ones are Mathematica, DreamWorks, Google Earth, HP, KDE, Roku TV box, Samsung, Skype, Ubuntu, VirtualBox, VLC, Volvo, Propeller GCC IDE, Texmaker, etc. I guess 'Glucore Omics Explorer' was also made from Qt; see LinkedIn.
Search http://code.google.com/ to find projects based on Qt.
10 Qt use cases “we” didn’t know

In my first example of GUI with button & label, I need to put 7 dll files in the same exe directory.

Google: how to reploy application on windows, how to build qt contains all dll static on windows

My experience based on Qt 5.0.2

read ReadME file to download perl, python and ruby. Make sure the executable path in in PATH env variable.
OpenGL requirement: DirectX SDK The 6/7/2010 version is about 572MB. This will be installed to C:\Program Files (x86)\Microsoft DirectX SDK(June 2010) directory.
modify mkspecs by searching qmake.conf. It was found in C:\Qt\qt-everwhere-opensource-src-5.0.2\qtbase\mkspecs\win32-msvc2010
configure -static -release -platform win32-msvc2010 -opengl desktop

Multiple version of Qt library
Keyboard shortcuts:
- Ctrl + Click the symbol - move to the definition or the declaration of a symbol.
- Click a symbol + Right click + Follow the symbol under cursor - move to the definition
The default build directory is parallel to the folder of source code which is a pain if there is a same project name. A better default build directory should be under the source code folder. To change the default setting, go to Tools -> Options -> Build and Run -> Remove "../" from the Default build directory value "../build-%{CurrentProject:Name}-%{CurrentKit:FileSystemName}-%{CurrentBuild:Name}". The project name is determined by Qt project file XXXX.pro.

http://qt-project.org/doc/qt-4.8/tutorials.html
http://www.zetcode.com/gui/qt4/ This website contains tutorials of GUI programming by many different languages.
Examples from codeprogress.com

# Open command prompt from Visual Studio 2010
set PATH=C:\Qt\Qt5.0.2\5.0.2\msvc2010_opengl\bin;%PATH%

Now we can build the project by for example

cd C:\Qt\FQD\Chapter01\plain-cpp
qmake -project
qmake
nmake

The executable will be located under release subfolder.

Frame (seems to be the same as 'Dock' in Qt's language)
Dock window/Dock Widget http://qt-project.org/doc/qt-4.8/mainwindows-dockwidgets.html
Use -> to dereference a pointer. The label below is a pointer rather than an object but *label is an object.

QLabel *label = new QLabel("ABCDE");
label->show();
// (*label).show();

QObject::connect();

means to use connect() function from QObject class.

'namespace Ui' in xxxx.h helps to glue classes together.
Qt widget - Basic widgets, Advanced widgets, Organizer widgets and Abstract widigets.
Qt class hierarchy diagram http://doc.qt.digia.com/extras/qt43-class-chart.pdf
QObject vs QWidget vs QMainWindow http://stackoverflow.com/questions/3298792/whats-the-difference-between-qmainwindow-and-qwidget-and-qdialog

@@ Line 3: / Line 3: @@
 * [https://github.com/rstudio/rstudio RStudio] is written in the C++ programming language and uses the Qt framework for its graphical user interface. See http://en.wikipedia.org/wiki/RStudio, http://support.rstudio.org/help/discussions/suggestions/3154-rstudio-and-qt-5 and [https://github.com/rstudio/rstudio/tree/master/dependencies/linux Linux platform] or [https://github.com/rstudio/rstudio/tree/master/dependencies/windows Windows platform].
 * Qt is used in a lot of places. See some example in [http://en.wikipedia.org/wiki/Qt_framework#Uses wikipedia]. Some famous ones are Mathematica, DreamWorks, Google Earth, HP, KDE, Roku TV box, Samsung, Skype, Ubuntu, VirtualBox, VLC, Volvo, [http://code.google.com/p/propside/ Propeller GCC IDE], [http://www.xm1math.net/texmaker/download.html Texmaker], etc. I guess 'Glucore Omics Explorer' was also made from Qt; see [http://se.linkedin.com/in/fredriknyberg LinkedIn].
+* Search http://code.google.com/ to find projects based on Qt.
 * [http://www.meegoexperts.com/2011/03/10-qt-cases-we-didn%E2%80%99t/ 10 Qt use cases “we” didn’t know]