Type casting in Qt

viniltc

Hi all,

What is a better way to do typecasting in Qt
I'm getting warning saying "use of old-style cast" by typecasting following way:

function((uint8_t*)data.data(), (size_t)data.length());

What is the better way to do this?

Thanks in advance.

JonB

@viniltc
You're "not allowed" to use those (lovely) C-style casts any longer. This isn't really Qt, it's C++. You should Google for generic static_cast<> & dynamic_cast<> for use in C++ code (e.g. https://en.cppreference.com/w/cpp/language/static_cast), and for qobject_cast<> in the Qt docs for a specific one useful in some Qt circumstances.

I believe the compiler will be happier with your code if you try:

function(static_cast<uint8_t*>(data.data()), static_cast<size_t>(data.length()));

or probably better If it's OK with the type coercing:

function(reinterpret_cast<uint8_t*>(data.data()), reinterpret_cast<size_t>(data.length()));

viniltc

@JonB
Thanks a lot for the feedback :)

aha_1980

so is your problem solved? Then pleas mark this topic as SOLVED too. Thanks!