QFileDialog with no edit box

samdol

Hi,
The following code pops up a dialog window showing File name edit box where selected filename is set. But I don't want to show this edit box.
I want to show only just list of files in the directory.
QFileDialog dialog(this, "Source Directory", filename);
dialog.exec();

kshegunov

Try the QFileDialog::HideNameFilterDetails option. If it doesn't work, then I believe the only way to modify the file dialog in such a way is to switch to the alien implementation and hide the text box manually. E.g.:

// Use alien file dialog
QFileDialog dialog(this, QStringLiteral("Source Directory"), filename);
dialog.setOption(QFileDialog::DontUseNativeDialog);

// Hide the file name edit box
QWidget * fileNameEdit = dialog.findChild<QWidget *>(QStringLiteral("fileNameEdit"));
Q_ASSERT(fileNameEdit);
fileNameEdit->setVisible(false);

// ...
dialog.exec();

samdol

@kshegunov
Sorry, but neither works,
The first one just use non-native Filadialog which also has editbox.
The second one crashes. It maybe there is no object named fileNameEdit on QFileDialog class. I tried to find an object name on QFileDialog.h but I could not see any.

joeQ

@samdol @kshegunov

I tried @kshegunov 's way. It is OK! The fileNameEdit widget not show. My Qt Version is 5.7.0.

kshegunov

What version are you using?

samdol

@kshegunov
I am using Version 5.5.0.
Is it called differently?

SGaist

Hi,

To add to @kshegunov, I'd search for QLineEdit rather than QWidget, that should narrow things a bit.

samdol

@SGaist
Still the same.
If fileNameEdit is a name of object used in the library, how can I find it in source code.

SGaist

It's in qfiledialog.ui in Qt's sources.

On which OS are you running that ?

kshegunov

@samdol said in QFileDialog with no edit box:

I am using Version 5.5.0.

Are you sure? @SGaist got ahead of me, but what OS are you running?

Is it called differently?

Not as far as I can see. You can check it yourself:
http://code.qt.io/cgit/qt/qtbase.git/tree/src/widgets/dialogs/qfiledialog.ui?h=v5.5.0#n287

@SGaist said in QFileDialog with no edit box:

I'd search for QLineEdit rather than QWidget, that should narrow things a bit.

Ordinarily I'd agree, however here it's a search by name and there's no gain in casting to line edit.

samdol

@kshegunov
I installed Qt 5.5.0 by
qt-opensource-windows-x86-mingw492-5.5.0.exe
I could not see qfiledialog.ui because, I think, it is not source code.
If fileNameEdit is the correct name, I don't understand why it crashes.

jsulm

@samdol said in QFileDialog with no edit box:

If fileNameEdit is the correct name, I don't understand why it crashes

Probably because fileNameEdit is nullptr? This is easy to check.

kshegunov

@samdol said in QFileDialog with no edit box:

If fileNameEdit is the correct name, I don't understand why it crashes.

By "crashes" you probably mean you trip the assertion I've put. Why I don't know for sure, you should debug it and check against your sources (if those are not available, building Qt so you obtain a source tree corresponding to the binary, might be a good idea).

SGaist

Just a silly idea: you didn't remove dialog.setOption(QFileDialog::DontUseNativeDialog); from your code, did you ?

If you are trying that with the native dialog it won't work.

samdol

@SGaist
Thank you SGaist and kshegunov,
I was silly, I should have put QFileDialog::DontUseNativeDialog.
Now with the following, I could hide fileNameEdit, filenameLabel and
buttonBox. It looks much better now. By the way, do we need QStringLiteral?

    QFileDialog dialog(this, "Source Directory", directory);
    dialog.setNameFilter(myFilter);
    dialog.setOption(QFileDialog::DontUseNativeDialog);
    QWidget * fileNameEdit = dialog.findChild<QWidget *>("fileNameEdit");
    //QWidget * fileNameEdit = dialog.findChild<QWidget *>(QStringLiteral("fileNameEdit"));
    Q_ASSERT(fileNameEdit);
    fileNameEdit->setVisible(false);
    QWidget * fileNameLabel = dialog.findChild<QWidget *>("fileNameLabel");
    fileNameLabel->setVisible(false);
    QWidget * buttonBox = dialog.findChild<QWidget *>("buttonBox");
    buttonBox->setVisible(false);

    dialog.exec();

'''

kshegunov

@samdol said in QFileDialog with no edit box:

I was silly, I should have put QFileDialog::DontUseNativeDialog.

Yes, you must use the alien dialog if you want to manipulate it in such a way.

By the way, do we need QStringLiteral?

It's a macro that enables some string literal optimizations if your compiler supports them otherwise it defaults to QString("text"). I advise using it, although it's not strictly necessary.