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[Solved] Prepend long to QByteArray
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Hi
I have a define that carries a long that I want to prepend to a QByteArray. How can I easily do this?
@#define SAMPLE 0x72454578
QByteArray Data->prepend(SAMPLE);
@does not work (obviously!?).
Data should get {72,45,45,78 ......}
How can this be done easily?
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Forgot to show how I currently do it:
@
uTemp.l = SAMPLE;
Data->prepend(uTemp.c[0]);
Data->prepend(uTemp.c[1]);
Data->prepend(uTemp.c[2]);
Data->prepend(uTemp.c[3]);@
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Would
QByteArray Data;
Data.prepend(QByteArray::number(SAMPLE));help?
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@ #define SAMPLE 0x72454578
QByteArray Data;Data.prepend( (char) (SAMPLE>>0*8) ); Data.prepend( (char) (SAMPLE>>1*8) ); Data.prepend( (char) (SAMPLE>>2*8) ); Data.prepend( (char) (SAMPLE>>3*8) );@
should do the job ... ?
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@prady_80
This does not work. QByteArray::number serves a different use.@vidar
This would work, but is not really shorter or a "smaller" way.Thank you guys for trying to help.
I think I leave it as it is.
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This would also work, if you think that's shorter:
@ QByteArray Data;
const char sample[4] = { 0x72, 0x45, 0x45, 0x78 };Data.prepend( sample, 4 );@