How to customize widgets in QT5

Lifting Method
QT assistance:using Custom Widgets with Qt Designer
eg. (Define a new qlable part)
1. Define a class
Class Label:public base, public qlabel//can support multiple inheritance
2. Open the UI editor in Qt Creator, drag a qlable to redeem, promote, enter the class name of the promoted label, tick all include, add, promote success.


plug-in method
QT assistance:creating Custom Widgets for Qt Designer
1, as with the lifting method, it is necessary to create a new component class
Class Analogclock:public Qwidget
2, create a plug-in class
Class Analogclockplugin:public Qobject, public qdesignercustomwidgetinterface
{
Q_object
Q_plugin_metadata (IID "Org.qt-project.qt.qdesignercustomwidgetinterface" FILE "Analogclock.json")
Q_interfaces (Qdesignercustomwidgetinterface)
Public
Explicit Analogclockplugin (Qobject *parent = 0);
......
};
and implement its related functions in its CPP.
3. Modify the. Pro File
......
CONFIG + = Plugin
CONFIG + = Designer
CONFIG + = Debug_and_release
TEMPLATE = Lib
QT + = Widgets Designer
SOURCES + = \
Analogclock.cpp \
Analogclockplugin.cpp
HEADERS + = \
Analogclock.h \
Analogclockplugin.h
Other_files + = Analogclock.json
Target.path = $$[qt_install_plugins]/designer

Installs + = target

...... 4. Build an empty Analogclock.json file in the project file directory

5. Compile the build. dll file and place it under C:\Qt\Qt5.2.0\5.2.0\msvc2012_64_opengl\plugins\designer to use the custom plugin in Qt Designer.

Note: If you need to use this plugin in Qt Creator, since the two parts of Qt SDK for Windows are compiled by a different compilation environment, Qtcreator is compiled by MSVC, the QT Library is compiled by MinGW, so it needs to be copied to C:\Qt\ Qt5.2.0\tools\qtcreator\bin\plugins\designer, there are several ways to solve this problem:

1) Download the QT creator source code and compile it in Qt Creator with MinGW
2) Compile the plugin under Visual Studio build the plugin with Visual Studio
3) compile QT creator source code, but turn the build key checking off

You can then open the project's interface file (*.ui) in Qtcreator, at which point Qtcreator allows you to edit the UI file using the integrated Qtdesigner, then open the menu item "Tools, Interface Editor->about Qt Designer plugins ... "to see which plug-ins have been loaded successfully and which have not been loaded successfully (in a separate run Qtdesigner, open the Help, about plugins menu to see if the plug-in was loaded successfully).

Reference article:

http://blog.csdn.net/ubiter/article/details/12757817

http://www.yekezhong.com/704

http://blog.csdn.net/dbzhang800/article/details/6871693

http://blog.csdn.net/yangxiao_0203/article/details/6896707