Hi,

I've followed this tutorial http://web.mit.edu/qt-dynamic/www/de...getplugin.html to create my own customized widget. After doing the "make" and "make install" I've seen a library file created in my workspace and as well as in the /designer directory. However when I reload the designer, I don't see my custom widget in the widget box. Please help, these are the things that I've accomplished so far.

The .pro file.

Qt Code: 
  1. CONFIG   += designer \
  2.             plugin \
  3.             debug_and_release
  4. TEMPLATE = lib
  5. HEADERS += QCustomDialog.h \
  6.     QCustomDialogPlugin.h
  7. SOURCES += QCustomDialog.cpp \
  8.     QCustomDialogPlugin.cpp
  9.  
  10. target.path = $$[QT_INSTALL_PLUGINS]/designer
  11. INSTALLS += target
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Here's my custom widget plugin.

Qt Code: 
  1. #ifndef QCUSTOMDIALOGPLUGIN_H
  2. #define QCUSTOMDIALOGPLUGIN_H
  3.  
  4.  #include <QDesignerCustomWidgetInterface>
  5.  
  6.  class QCustomDialogPlugin : public QObject, public QDesignerCustomWidgetInterface
  7.  {
  8.      Q_OBJECT
  10.  
  11.  public:
  12.      QCustomDialogPlugin(QObject *parent = 0);
  13.  
  14.      bool isContainer() const;
  15.      bool isInitialized() const;
  16.      QIcon icon() const;
  17.      QString domXml() const;
  18.      QString group() const;
  19.      QString includeFile() const;
  20.      QString name() const;
  21.      QString toolTip() const;
  22.      QString whatsThis() const;
  23.      QWidget *createWidget(QWidget *parent);
  24.      void initialize(QDesignerFormEditorInterface *core);
  25.  
  26.  private:
  27.      bool initialized;
  28.  };
  29.  
  30.  
  31. #endif // QCUSTOMDIALOGPLUGIN_H
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Qt Code: 
  1. #include "QCustomDialogPlugin.h"
  2. #include "QCustomDialog.h"
  3. #include <QString>
  4. #include <QObject>
  5. #include <QtPlugin>
  6.  
  7. QCustomDialogPlugin::QCustomDialogPlugin(QObject *parent)
  8.     : QObject(parent)
  9. {
  10.     initialized = false;
  11. }
  12.  
  13. bool QCustomDialogPlugin::isInitialized() const
  14. {
  15.     return initialized;
  16. }
  17.  
  18. QWidget *QCustomDialogPlugin::createWidget(QWidget *parent)
  19. {
  20.     return new QCustomDialog(parent);
  21. }
  22.  
  23.  QString QCustomDialogPlugin::name() const
  24.  {
  25.      return "QCustomDialog";
  26.  }
  27.  
  28.  QString QCustomDialogPlugin::group() const
  29.  {
  30.      return "Display Widgets [Examples]";
  31.  }
  32.  
  33.  QIcon QCustomDialogPlugin::icon() const
  34.  {
  35.      return QIcon();
  36.  }
  37.  
  38.  QString QCustomDialogPlugin::toolTip() const
  39.  {
  40.      return "";
  41.  }
  42.  
  43.  QString QCustomDialogPlugin::whatsThis() const
  44.  {
  45.      return "";
  46.  }
  47.  
  48.  bool QCustomDialogPlugin::isContainer() const
  49.  {
  50.      return true;
  51.  }
  52.  
  53.  QString QCustomDialogPlugin::domXml() const
  54.  {
  55.      return "<widget class=\"QCustomDialog\" name=\"customDialog\">\n"
  56.             " <property name=\"geometry\">\n"
  57.             "  <rect>\n"
  58.             "   <x>0</x>\n"
  59.             "   <y>0</y>\n"
  60.             "   <width>400</width>\n"
  61.             "   <height>200</height>\n"
  62.             "  </rect>\n"
  63.             " </property>\n"
  64.             " <property name=\"toolTip\" >\n"
  65.             "  <string>The current time</string>\n"
  66.             " </property>\n"
  67.             " <property name=\"whatsThis\" >\n"
  68.             "  <string>Qt Custom Dialog "
  69.             "the current time.</string>\n"
  70.             " </property>\n"
  71.             "</widget>\n";
  72.  }
  73.  
  74.  QString QCustomDialogPlugin::includeFile() const
  75.  {
  76.      return "QCustomDialog.h";
  77.  }
  78.  
  79.  Q_EXPORT_PLUGIN2(libCustomWidget, QCustomDialogPlugin)
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I have not posted the widget class itself because I believe its already working. I've tried using it manually or without using the designer and it shows when run.