int QByteArray array

[shokarta]

Dear all,

So far i have used this:

QByteArray writeData_green;
writeData_green.resize(5);
writeData_green[0] = 0x05;
…

but now i need to convert int which will be provided as variable, so lets say:

int green = 150;
QByteArray writeData_green;
writeData_green.resize(5);
writeData_green[0] = green.toHex();
…

and I need to write it with "0x" prefix and the HEX value to be in uppercases, so for example 0x8A

how to do this?

[JonB]

@shokarta
Use something like:

writeData_green.setNum(green, 16);
qDebug() << writeData_green.toHex();

You will have to call QByteArray::toUpper() to get the uppercase letters, and you will have to insert your own 0x prefix, to get a final result of 0x8A. See https://stackoverflow.com/a/36603575/489865 for an example.

[JonB]

@shokarta
Use something like:

writeData_green.setNum(green, 16);
qDebug() << writeData_green.toHex();

You will have to call QByteArray::toUpper() to get the uppercase letters, and you will have to insert your own 0x prefix, to get a final result of 0x8A. See https://stackoverflow.com/a/36603575/489865 for an example.