adding one icon to all items in QTreeView

[Mystical Groovy]

hey all,
i would like to add one icon to all items in qtreeview

i tried the following:
(listModel is my QDirModel)


int role;
QIcon modelicon("/images/package.png");
modelicon.operator QVariant();
listModel->setData(listModel->index("/home/test/"),modelicon, role = Qt::DecorationRole);


int role;
listModel->setData(listModel->index("/home/test/"),QVariant(QIcon("/images/package.png")), role = Qt::DecorationRole);


listModel->setData(listModel->index("/home/test/"),QVariant(QIcon("/images/package.png")), Qt::DecorationRole);

the program compiles and runs successfully but it doesnt add my icon in the items in QTreeView, it continues to show the default icon.

[caduel]

i) why do you assign the role to your variable role?
(Looks like you are confused about default values...)

ii) check the return value of setData(); probably it is false.
Not every model supports setting data (or setting any role).


You can subclass QDirModel and have your subclass's data function return that icon for Qt::DecorationRole.

HTH

[Mystical Groovy]

thanks for your reply :)

youre right im deeply confused im not used to the "model" system yet haha.
can you help me with some example code on how to do this?

thank you

[aamer4yu]

MyModel::data ( const QModelIndex & index, int role = Qt::DisplayRole )
{
if(role == Qt::DecorationRole)
return QIcon(...);

// Rest of the code..
}

[Mystical Groovy]

thank you, but the problem remains,
this is the code:


int role;
listModel->data ( listModel->index("/home/test"), role = Qt::DisplayRole );
if(role == Qt::DecorationRole)
{
return QIcon("");
}


it gives me
" error: return-statement with a value, in function returning 'void'"

[Mystical Groovy]

i got it working after all,
problem solved

[aamer4yu]

Can you share what was the mistake ? It might help others :)