BSTR to QString Conversion

How can i convert BSTR to QString. Please Give a example.

This probably works:

Code:

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QString convertedBSTR((QChar*) bstr, wcslen(bstr));

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Don't forget to free the BSTR, else you will get memory leaks!

Quote:

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Originally Posted by _Stefan

This probably works:

Code:

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QString convertedBSTR((QChar*) bstr, wcslen(bstr));

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Don't forget to free the BSTR, else you will get memory leaks!

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This is not working give me some other solution.
BSTR containing the starting base address of a string. I need to convert into QString.

Can you elaborate on the exact problem?

Show some code, debug messages?

Quote:

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Originally Posted by _Stefan

Can you elaborate on the exact problem?

Show some code, debug messages?

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BSTR codesetID;

if(pGetID_Outron->GetCodesetID(&codesetID, &codesetLength) == S_OK)
{
}
CodesetID containg the starting address.
Now we need to get in QString, to which BSTR is pointing to.

But what happens when you use the suggested code?

Quote:

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Originally Posted by _Stefan

This probably works:

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It is my understanding that this will not work as the first 4 bytes of a BSTR contain the length of the string, so you would have to compensate for this. Maybe QString convertedBSTR((QChar*) &bstr[4], wcslen(bstr)); ?

http://www.codeproject.com/kb/string/bstrsproject1.aspx

Try:

std::wstring intermediateString(myBSTR, SysStringLen(myBSTR);
QString finalString = QString::fromStdWString(intermediateString);

-K

No need to use std:
QString qstr((QChar*)bstr, ::SysStringLen(bstr));