[solved] Why rowCount() of QFileSystemModel always return 0

[Hareen Laks]

Hi,

While reading "this":http://qt-project.org/doc/qt-4.8/model-view-programming.html#using-model-indexes I tried to code the example.

@QFileSystemModel *model = new QFileSystemModel;
QModelIndex parent_index = model->index(QDir::currentPath());
int num_rows = model->rowCount(parent_index);@

But num_rows always give me 0.

Kindly request your guidance.

Thanks you.

[SGaist]

Hi,

QFileSystemModel's loading is done asynchronously you have to at least wait for the directoryLoaded signal to be emitted before checking that kind for thing

[Hareen Laks]

Thank you SGaist it solved my issue.

I use.

@connect(model,SIGNAL(directoryLoaded(QString)),this,SLOT(findItems(QString)));@

"QFileSystemModel uses a separate thread to populate itself so it will not cause the main thread to hang as the file system is being queried. Calls to rowCount() will return 0 until the model populates a directory."

I should read document first.