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  1. Qt
  2. QTBUG-53152

Register comparators for std::vector in QVariant

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    Description

      Consider this code:

      std::vector< std::vector<int> > v;
v.push_back( std::vector<int>( 1, 4 ) );
v.push_back( std::vector<int>( 1, 3 ) );
QComboBox box;
box.addItem( "", QVariant::fromValue<std::vector<int>>( v[0] ) );
box.addItem( "", QVariant::fromValue<std::vector<int>>( v[1] ) );
int pos = box.findData( QVariant::fromValue<std::vector<int>>(v[0]) );

      pos is -1, when 0 was expected.

      Manual search (for i to box.count()) is doable and works. As ( box.itemData( 0 ).value< std::vector<int> >() == v[0] ) surprisingly returns true! But findData is supposed to work too!

      Note: Adding Q_DECLARE_METATYPE( std::vector<int> ); does not help

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            thiago Thiago Macieira
            jpo38 Jean Porcherot
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              Created:
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              Resolved:

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