compile error using qFromBigEndian
I'm trying to use qFromBigEndian to read a 32-bit int from a byte stream received over a udp socket.
void processData(uchar *data)
{
qint32 addr;
addr = qFromBigEndian(data);
}
Compiling this gives the following error: error: invalid conversion from 'uchar*' to 'qint32'
The Qt documentation says:
T qFromBigEndian ( const uchar * src )
Reads a big-endian number from memory location src and returns the number in the host byte order rep开发者_Go百科resentation. Note: Template type T can either be a qint16, qint32 or qint64.
Obviously I'm doing something a bit silly and I am already hanging my head in shame. Can someone please explain my obvious mistake?
Note that qFromBigEndian(const uchar *src)
is a function template.
You're missing the template parameter, use
addr = qFromBigEndian<qint32>(data);
instead, and things will work as expected.
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