BSTR to QString Conversion

[bismitapadhy]

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

[_Stefan]

This probably works:

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

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

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

[bismitapadhy]

This probably works:

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

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

To copy to clipboard, switch view to plain text mode 

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

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

[_Stefan]

Can you elaborate on the exact problem?

Show some code, debug messages?

[bismitapadhy]

Can you elaborate on the exact problem?

Show some code, debug messages?

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.

[wysota]

But what happens when you use the suggested code?

[squidge]

This probably works:

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)); ?

[wysota]

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

[hvkleist]

Try:

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

-K

[bmn]

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