Hi,

Here I am once again.

I'm trying to developp my own custom widget. I did it well the old fashion way but when I try to do it as a plugin it fails at compilation, invoking a problem with my Constructor, I don't know why so I hopre someone could help me.

The widget I'm trying to developp is a FileChooser from Qt Tutorial.

The compilation error message is the following :
Qt Code: 
  1. error C2533 CustomWidgetPlugin::CustomWidgetPlugin : constructor not allowed a return type
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... I'm pretty sure that it does not return any value, so why does the compilation failed ?

Here is my code for the .h
Qt Code: 
  1. #include <qwidgetplugin.h>
  2.  
  3. class CustomWidgetPlugin : public QWidgetPlugin
  4. {
  5. public:
  6. 	CustomWidgetPlugin();
  7.  
  8. 	QStringList keys() const;
  9. 	QWidget* create(const QString& classname, QWidget* parent=0, const char* name=0);
  10. 	QString group(const QString&) const;
  11. 	QIconSet iconSet(const QString&) const;
  12. 	QString includeFile(const QString&) const;
  13. 	QString toolTip(const QString&) const;
  14. 	QString whatsThis(const QString&) const;
  15. 	bool isContainer(const QString&) const;
  16. }
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the code for the .cpp
Qt Code: 
  1. #include "CustomWidgetPlugin.h"
  2.  
  3. CustomWidgetPlugin::CustomWidgetPlugin()
  4. {
  5.  
  6. }
  7.  
  8. QStringList CustomWidgetPlugin::keys() const
  9. {
  11. 	list << "FileChooser";
  12. 	return list;
  13. }
  14.  
  15. QWidget* CustomWidgetPlugin::create(const QString& key, QWidget* parent, const char* name) const
  16. {
  17. 	if( key == "FileChooser" )
  18. 		return new FileChooser(parent, name);
  19. 	return 0;
  20. }
  21.  
  22. QString CustomWidgetPlugin::includeFile(const QString& feature) const
  23. {
  24. 	if( feature == "FileChooser" )
  25. 		return "filechooser.h";
  26. 	return QString::null;
  27. }
  28.  
  29. QString CustomWidgetPlugin::group(const QString& feature) const
  30. {
  31. 	if( feature == "FileChooser" )
  32. 		return "Input";
  33. 	return QString::null;
  34. }
  35.  
  36. QIconSet CustomWidgetPlugin::iconSet(const QString& feature) const
  37. {
  38. 	return QIconSet( QPixmap("filechooser_pixmap.png"));
  39. }
  40.  
  41. QString CustomWidgetPlugin::toolTip(const QString& feature) const
  42. {
  43. 	if( feature == "FileChooser" )
  44. 		return "File Chooser Widget";
  45. 	return QString::null;
  46. }
  47.  
  48. QString CustomWidgetPlugin::whatsThis(const QString& feature) const
  49. {
  50. 	if( feature == "FileChooser" )
  51. 		return "A widget to choose a file";
  52. 	return QString::null;
  53. }
  54.  
  55. bool CustomWidgetPlugin::isContainer(const QString& feature) const
  56. {
  57. 	return FALSE;
  58. }
  59.  
  60. Q_EXPORT_PLUGIN( CustomWidgetPlugin )
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and my .pro
Qt Code: 
  1. SOURCES += CustomWidgetPlugin.cpp ../FileChooser/filechooser.cpp
  2. HEADERS += CustomWidgetPlugin.h ../FileChooser/filechooser.h
  3. DESTDIR = $(QTDIR)/plugins/designer
  4. TARGET = filechooser
  5.  
  6. target.path=$$plugins.path
  7. isEmpty(target.path):target.path==$$QT_PREFIX/plugins
  8. INSTALLS += target
  9. TEMPLATE = lib
  10. CONFIG += qt warn_on release plugin
  11. INCLUDEPATH += $(QTDIR)/tools/designer/interfaces
  12. DBFILE = CustomWidgetPlugin.db
  13. PROJECTNAME = CustomWidgetPlugin
  14. LANGUAGE = C++
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Thanks in advance for your help.