Qt: How to add Custom ‘Local Drive’ row in QFileSystemModel to display Drives

I am using QFileSystemModel to represent file structure through the QTreeView. Everything works fine and it displays C:, D: etc drives in TreeView, but I need to add an additional row at the beginning of the tree. For example for now is:

+ C:
+ D:
+ E:

After adding the row ‘Local Drives’ at the beginning, I wanna display it like:

Code:

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- Local Drive
      + C:
      + D:
      + E:

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Here is the code:

Code:

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pSystemPrimaryModel = new QFileSystemModel(this);  
pSystemPrimaryModel->setRootPath(QDir::currentPath());
ui->TreeView->setModel(pSystemPrimaryModel);

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Please stop spamming. One thread for the problem is enough, you don't have to post in five different threads.

I am sorry. I tried using QFSFileEngine too but it just gives me a list of drives in 'Local Folder' but not the directories inside each drive. Can you please check and tel me whether this is a right way or not.

Code:

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QFileInfoList list = QFSFileEngine::drives();
    for(int i = 0; i < list.size(); i++)
    {
        qDebug() << list.at(i).absoluteDir();
    }
 
    m_model = new QStandardItemModel(0,0);
 
    QList<QStandardItem *> LocalItem;
    LocalItem.insert(0,new QStandardItem("Local Drives"));
    LocalItem.at(0)->setEditable(false);
    m_model->insertRow(0,LocalItem);
 
 
    for (int i = 0; i < list.size(); i++)
    {
        QString str = list.at(i).absolutePath();
        QStandardItem* Localchild = new QStandardItem(str);
        QStandardItem* LocalparentItem = m_model->item(0,0);
        Localchild->setEditable(false);
        LocalparentItem->appendRow(Localchild);
    }   
 
    ui->PrimTreeView->setModel(m_model);

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Output:
Attachment 8492

Quote:

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Originally Posted by wysota

Please stop spamming. One thread for the problem is enough, you don't have to post in five different threads.

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Quote:

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Originally Posted by owais_blore

I am sorry. I tried using QFSFileEngine too but it just gives me a list of drives in 'Local Folder' but not the directories inside each drive.

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You are only asking for the drives, how do you expect the program to know that you want to recurse into them?

Cheers,
_

Yes anda you are right. This scenario seems to be complicated. How can I make sure after clicking each drive, I should recurse into them?

Quote:

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Originally Posted by anda_skoa

You are only asking for the drives, how do you expect the program to know that you want to recurse into them?

Cheers,
_

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The tree view asks the model about the child count (rowCount) of each node. If the count is greater than 0 then the node will be visualized as expandable.
When the user expands that node, the view will ask for the children.

Since you are working with a model that stores all data in itself, you'll have to build the model that way, i.e. recurse through the data structure and create items accordingly.

Cheers,
_