Add slot on ContextHelp button

Author: DelazJ

src/gui/qgsgenericprojectionselector.h

@@ -22,6 +22,8 @@
 
 #include <QSet>
 
+#include "qgscontexthelp.h"
+
 /**
  * \ingroup gui
  * A generic dialog to prompt the user for a Coordinate Reference System.
@@ -67,6 +69,8 @@ class GUI_EXPORT QgsGenericProjectionSelector : public QDialog, private Ui::QgsG
     void setSelectedCrsId( long theID );
     void setSelectedAuthId( QString authId );
 
+    void on_buttonBox_helpRequested() { QgsContextHelp::run( metaObject()->className() ); }
+    
     /**
      * \brief filters this dialog by the given CRSs
      *