Difference between double click and Open button in QFileDialog

[Oleg]

Qt 4.7.4 for Windows (no such bug on Linux)

The dialog code is quite simple:

QString fileName = QFileDialog::getOpenFileName(this, tr("Open media file"), playerSettings2->prevFileDir, ::mediaDialogFilter);

QString fileName = QFileDialog::getOpenFileName(this, tr("Open media file"), playerSettings2->prevFileDir, ::mediaDialogFilter);

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But hang occurs later in other libVLC's thread, when it tries to start playback. So, I don't know even where to dig.