Qt-interest Archive, January 2008
QString from *buff and len
Message 1 in thread
Hi!
Is there an easy way to create a QString from a "char *buff" (not NULL
terminated) and an integer which holds the length of the buffer without
doing a conversion to null-terminated string first?
thanks
Klaus
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Message 2 in thread
> Is there an easy way to create a QString from a "char *buff"
> (not NULL
> terminated) and an integer which holds the length of the
> buffer without
> doing a conversion to null-terminated string first?
try QString(QByteArray(buff,len))
Cheers,
Peter
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Message 3 in thread
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Peter Prade wrote:
>> Is there an easy way to create a QString from a "char *buff"
>> (not NULL
>> terminated) and an integer which holds the length of the
>> buffer without
>> doing a conversion to null-terminated string first?
>
> try QString(QByteArray(buff,len))
>
After spending 30 seconds reading the docs, it appears that way will
result in the string being copied at least twice. It would be better to
use QString(QByteArray::fromRawData(buff,len)), or one of:
QString::fromAscii(buff,len)
QString::fromLatin1(buff,len)
QString::fromLocal8Bit(buff,len)
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Jonathan Brady
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Message 4 in thread
Jonathan Brady schrieb:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Peter Prade wrote:
>>> Is there an easy way to create a QString from a "char *buff"
>>> (not NULL
>>> terminated) and an integer which holds the length of the
>>> buffer without
>>> doing a conversion to null-terminated string first?
>> try QString(QByteArray(buff,len))
>>
>
> After spending 30 seconds reading the docs, it appears that way will
> result in the string being copied at least twice. It would be better to
> use QString(QByteArray::fromRawData(buff,len)), or one of:
>
> QString::fromAscii(buff,len)
> QString::fromLatin1(buff,len)
> QString::fromLocal8Bit(buff,len)
These look fine. I was not aware of the static members and only took a
look at the QString constructors.
thanks
Klaus
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Message 5 in thread
QString string(QByteArray(buff, length));
Of course, this does its own internal Qt conversions.
Keith
**Please do not reply to me, reply to the list.**
On 01-03-2008 9:15 AM, "Klaus Darilion" wrote:
> Hi!
>
> Is there an easy way to create a QString from a "char *buff" (not NULL
> terminated) and an integer which holds the length of the buffer without
> doing a conversion to null-terminated string first?
>
> thanks
> Klaus
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