Version 5.10.1 windows mingw32 release question about the Class QFileDialog

Hcf134

hi,

i use the QFileDialog's function: selectedMimeTypeFilter(), i want to get the file type .

my code:

QFileDialog dialog(this, tr("Open File"));
QStringList mimeTypeFilters;
const QByteArrayList supportedMimeTypes = QImageReader::supportedMimeTypes();

foreach (const QByteArray &mimeTypeName, supportedMimeTypes)
    mimeTypeFilters.append(mimeTypeName);

QString selecttype = userSelectedType.isEmpty() ? QString("image/jpeg") : userSelectedType;

dialog.selectMimeTypeFilter(selecttype);

dialog.setMimeTypeFilters(mimeTypeFilters);
dialog.exec();
.....

QString tempPath = dialog.selectedFiles().first();

userSelectedType = dialog.selectedMimeTypeFilter();

/***************************/
i add the qDebug to print out the value of userSelectedType ,unfortunately, it is always
empty.

I want to know the method which i used is right or not .

jsulm

@Hcf134 said in Version 5.10.1 windows mingw32 release question about the Class QFileDialog:

userSelectedType

Where is it defined and set?

Hcf134

This post is deleted!

Hcf134

@jsulm
Thanks your replying!
I define it in the class which i writed above code .

class ImageReader : public QWidget
{
/others/
.....
public:
QString getFilePath();
private:
QString userSelectedType;
}

QString ImageReader::getFilePath()
{
/*above code */
...
return tempPath;
}

jsulm

@Hcf134 Maybe you should first call

dialog.setMimeTypeFilters(mimeTypeFilters);

and then

dialog.selectMimeTypeFilter(selecttype);