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Code: Alles auswählen

QFile file (filename);
if (!file.open(QIODevice::ReadOnly)) return;
QDataStream in(&file);
in.setByteOrder(QDataStream::LittleEndian);
  
// Calculate size:
const unsigned int DATASIZE = m_width*m_height*m_depth;
// Allocate data
quint8 *data = new quint8 [DATASIZE];

for (unsigned int i = 0; i < DATASIZE; ++i)
{
    // read data
    in >> data[i];
    // Alternativ auch:
    // in.readRawData(reinterpret_cast<char *>(&data[i]),1);
    // gleich schlechtes zeitliches Resultat
  }

Code: Alles auswählen

filename.replace(QRegExp("\\"),"\\\\");
std::string s = filename.toStdString();
const char* fn = s.data();
std::ifstream quelle(fn, std::ifstream::in | std::ifstream::binary);
if (!quelle)
{
	QMessageBox::critical(0, QObject::tr("Error"), QObject::tr("File could not be opened"), QMessageBox::Ok, QMessageBox::NoButton);
	return;
}
// Calculate size:
const unsigned int DATASIZE = m_width*m_height*m_depth;
	
// Allocate data
qint8 *data = new qint8 [DATASIZE];

for (unsigned int i = 0; i < DATASIZE; ++i)
{
    quelle.read(reinterpret_cast<char *>(&data[i]),1);
}

// ******* Closing Source File
quelle.close();

Code: Alles auswählen

/* return file contenets as qstring */
QString Sqlitedb::utf8_file_get_contents( QString filename )
{
    QString inside = "";  
    QFile file(filename); 
    if (file.exists()) {
                if (file.open(QFile::ReadOnly | QFile::Text)) {
                  inside = QString::fromUtf8(file.readAll());
                  file.close();
                }
    }
   return inside;
}

Code: Alles auswählen

filename.replace(QRegExp("\\"),"\\\\");
std::string s = filename.toStdString();
const char* fn = s.data();
        
int fd = open(fn, O_RDONLY);
if (fd == -1)
{
  // fehler
  perror("File could not be opened");
  return -1;
}
        
 int laenge   = lseek(fd,0,SEEK_END);
        
 quint8* t_data = (quint8*) mmap(0,laenge,PROT_READ,MAP_SHARED,fd,0);