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customwidgetplugin.cpp Example File
designer/customwidgetplugin/customwidgetplugin.cpp

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 #include "analogclock.h"
 #include "customwidgetplugin.h"

 #include <QtPlugin>

 AnalogClockPlugin::AnalogClockPlugin(QObject *parent)
     : QObject(parent)
 {
     initialized = false;
 }

 void AnalogClockPlugin::initialize(QDesignerFormEditorInterface * /* core */)
 {
     if (initialized)
         return;

     initialized = true;
 }

 bool AnalogClockPlugin::isInitialized() const
 {
     return initialized;
 }

 QWidget *AnalogClockPlugin::createWidget(QWidget *parent)
 {
     return new AnalogClock(parent);
 }

 QString AnalogClockPlugin::name() const
 {
     return "AnalogClock";
 }

 QString AnalogClockPlugin::group() const
 {
     return "Display Widgets [Examples]";
 }

 QIcon AnalogClockPlugin::icon() const
 {
     return QIcon();
 }

 QString AnalogClockPlugin::toolTip() const
 {
     return "";
 }

 QString AnalogClockPlugin::whatsThis() const
 {
     return "";
 }

 bool AnalogClockPlugin::isContainer() const
 {
     return false;
 }

 QString AnalogClockPlugin::domXml() const
 {
     return "<ui language=\"c++\">\n"
            " <widget class=\"AnalogClock\" name=\"analogClock\">\n"
            "  <property name=\"geometry\">\n"
            "   <rect>\n"
            "    <x>0</x>\n"
            "    <y>0</y>\n"
            "    <width>100</width>\n"
            "    <height>100</height>\n"
            "   </rect>\n"
            "  </property>\n"
            "  <property name=\"toolTip\" >\n"
            "   <string>The current time</string>\n"
            "  </property>\n"
            "  <property name=\"whatsThis\" >\n"
            "   <string>The analog clock widget displays the current time.</string>\n"
            "  </property>\n"
            " </widget>\n"
            "</ui>\n";
 }

 QString AnalogClockPlugin::includeFile() const
 {
     return "analogclock.h";
 }

 Q_EXPORT_PLUGIN2(customwidgetplugin, AnalogClockPlugin)