This is an HexEdit widget for Qt Framework 5, it is released under MIT License.


  • Big File Support.
  • Unlimited Undo/Redo.
  • Fully Customizable.
  • Easy to Use.
  • Python3 bindings


The data is managed by QHexEdit through QHexEditData class.

You can load a generic QIODevice using the method fromDevice() of QHexEditData class, also, helper methods are provided in order to load a QFile a In-Memory buffer in QHexEdit:

Loading Data

QHexEdit allows you to load data from an in-memory buffer, generic I/O device, or file.

From an in-memory buffer (QHexEditData takes ownership of the object):

QHexEditData* hexeditdata = QHexEditData::fromMemory(bytearray);

From a generic I/O device:

QHexEditData* hexeditdata = QHexEditData::fromDevice(iodevice);

From a file:

QHexEditData* hexeditdata = QHexEditData::fromFile("data.bin");

Create a new QHexEdit object and associate it with the QHexEditData object.

QHexEdit* hexedit = new QHexEdit();


Change background color:

hexedit->highlightBackground(0, 10, QColor(Qt::Red)); /* Highlight Background from 0 to 10 (10 included) */

Change the foreground color:

hexedit->highlightForeground(0, 15, QColor(Qt::darkBLue)); /* Highlight from 0 to 15 (15 included) */

Clear highlighting:



Apply Comment

hexedit->commentRange(0, 12, "I'm a comment!");

Remove a comment

hexedit->uncommentRange(0, 5);

Clear all comments


Reading and writing data

Getting data

QHexEditReader reader(hexeditdata);
quint32 a = reader.readUInt32(23); /* Read a 32 bit unsigned int from offset 23 using platform's byte order */
qint16 b = reader.readInt16(46, QSysInfo::BigEndian); /* Read a 16 bit unsigned short from offset 46 and convert it in Big Endian */
QByteArray data = reader.read(24, 78); /* Read 78 bytes starting from offset 24 */

Writing data

QHexEditWriter writer(hexeditdata);
writer.insert(4, QString("Hello QHexEdit").toUTF8()); /* Insert an UTF-8 string from offset 4 */
writer.remove(6, 10);/* Delete bytes from offset 6 to offset 10 */
writer.replace(30, 12, QString("New Data").toUTF8()); /* Replace 12 bytes from offset 30 with the UTF-8 string "New Data" */

Python3 Bindings

To build the python bindings (on Linux), first build and install the shared library:

qmake QHexEdit.pro
sudo make install

then build the python bindings:

cd python
python3 setup.py build
sudo python3 setup.py install

There’s a test.py program in the same directory that should show itself in the QHexEdit widget.