QFontDatabase::addApplicationFontFromData && addApplicationFont returns -1

[MeghaM]

Hi

the readAll() function in qiodevice is unable to read ttf files.

The lines

QFile res(fileInfo.absoluteFilePath());
QByteArray data = res.readAll();

data gets the correct content of the file is a pdf file or any other file. But it always gets o when trying to read a ttf file. Anyone has any clue.

[ChrisW67]

the readAll() function in qiodevice is unable to read ttf files.

You are mistaken. Since you are not opening the file at all this readAll() call will return zero bytesl regardless of the file content.