Plugin Loading and Signal Handling in Qt4

[liquid]

Hi,
Anyone can post a tutorial, which describe how we can load plugins and connect signal and slots from main program to plugin in Qt4.

[ashukla]

Hi,
Anyone can post a tutorial, which describe how we can load plugins and connect signal and slots from main program to plugin in Qt4.

I think it may help you.
http://doc.trolltech.com/4.3/plugins-howto.html http://doc.trolltech.com/4.3/tools-plugandpaint.html

[jpn]

A plugin interface cannot declare signals and slots because it cannot inherit QObject. But you can make the plugin interface return an object which provides those signals and slots.

[liquid]

Thanks.
Can you post a simple example code, which describe how to make a plugin interface, which return an object that provides signals and slots.

[jpn]

class PluginInterface
{
 public:
     virtual ~PluginInterface() {}
     virtual QObject* someObjectWithSignalsAndSlots() const = 0; // <--
     ...
};
 
Q_DECLARE_INTERFACE(...)

class PluginInterface
{
 public:
     virtual ~PluginInterface() {}
     virtual QObject* someObjectWithSignalsAndSlots() const = 0; // <--
     ...
};

Q_DECLARE_INTERFACE(...)

To copy to clipboard, switch view to plain text mode