Check if directory exists

RIVOPICO

Hi i do this to check the directory exists:
if (directorio.exists(Path)){
and then copy to this directory
}
But not Works some solution

Paul Colby

Hi @RIVOPICO,

I typically do something like:

    const QFileInfo outputDir("some-directory-path-name");
    if ((!outputDir.exists()) || (!outputDir.isDir()) || (!outputDir.isWritable())) {
        qWarning() << "output directory does not exist, is not a directory, or is not writeable"
                   << outputDir.absoluteFilePath();
        return false;
    }

Cheers.

koahnig

@RIVOPICO

you should use this

QDir pathDir(Path);
if (pathDir.exists())
{
... do your stuff ...
}

RIVOPICO

@koahnig i get this message when i do this:
QIODevice::write (QFile, "PATH"): device not open

I'm trying to copy one application

? Offline

Have a look at http://doc.qt.io/qt-5/qdir.html. Just like @koahnig said, bool QDir::exists(const QString &name) const and bool QDir::exists() const do different things.

Poorti

You can try this..

QString destPath;
QString srcPath;
......
......
QDir dir(destPath);
if(dir.exists())
{
        // append file name to destPath here
        ....
        destPath.append(fileName);
	if(!QFile::copy(srcPath, destPath))
	{
		qDebug() << "Unable to copy file!";
		....
	}
	... copy successful...
}

Note that, for QFile::copy to work the destination path should contain the name of the file as well.
eg,

QFile::copy("C:/work/myfolder/srcFile.txt", "D:/samples/destFile.txt");

will work.

QFile::copy("C:/work/myfolder/srcFile.txt", "D:/samples");

won't work.