How to save file with QFileDialog

[pnikolov]

Hello,
I read the QFileDialog class reference, but I still cannot solve the following problem:
I want to impelement a posibility for the user to save a file. I use Python and PyQt4, but if you have a C++ solution please wirte it...
I use:

QtGui.QFileDialog.getSaveFileName(self, "Save file", "", ".conf")

But when I press the Save button from the showed Dialog, there is no saved file..
I tried using:


filename = QtGui.QFileDialog.getSaveFileName(self, "Save file", "", ".conf")

where filename is previosly opened file or string... but no success
I read somewhere that getSavedFileName() returns the selected filename even if there is no such file (?!?!)

I need your help.
All the best!

[jacek]

QFileDialog only asks user for the file name. It won't save your data, because it doesn't even know what data to save.

In C++ you would do this:

filename = QFileDialog::getSaveFileName( ... );
QFile f( filename );
f.open( QIODevice::WriteOnly );
// store data in f
f.close();

[pnikolov]

Thanks for the information.

And why the hell the method is called getSaveFileName() ??? :confused: And the displayed dialog contents the SAVE button? Is this a joke?

I suggested that:

filename = QtGui.QFileDialog.getSaveFileName(self, "Save file", "", ".conf")
will save the content of filename with the .conf extention... but no! I will do it manualy as you suggested... thanks!

[ChristianEhrlicher]

*lol*

:eek: sorry, could not resist

[jacek]

And why the hell the method is called getSaveFileName() ???
Because it returns the name of a file chosen by the user in which data should be saved. It can't do anything with the data, especially that you don't pass it as an argument.

[chochatown]

Hello
i try to use Qfiledialog for a save dialog too
but ther is an error that i cant see the reason that's my code

<code>
void Frm::evtBtnFileTarget()
{
QFileDialog::getSaveFileName(this, "Save file", "", ".conf");
}
</code>

that's the error:

Frm.cpp:945: erreur: no matching function for call to «QFileDialog::getSaveFileName(Frm* const, const char [10], const char [1], const char [6])»
/usr/include/qt4/QtGui/qfiledialog.h:201: note: candidats sont: static QString QFileDialog::getSaveFileName(QWidget*, const QString&, const QString&, const QString&, QString*, QFlags<QFileDialog::Option>)



thx

[Lykurg]

your class Frm must be a subclass of QWidget or pass 0 instead of this as the first parameter

[chochatown]

c'est bien ca, Mercii;)

[prabhudev]

QString s = QFileDialog::getSaveFileName(
"/home",
"Images (*.png *.xpm *.jpg)",
this,
"save file dialog",
"Choose a filename to save under" );

use this works fine
http://linux.die.net/man/3/qfiledialog

[d_stranz]

Thanks for the timely response. I'm sure these guys have been struggling to find this answer since 2009.

[ChrisW67]

Been a few of these lately. I suspect there will be another spate in three years ;)

[prabhudev]

The reason i answered because if in future if some1 have a same problem, he will have a solution here.