convert Variant to CString?

[ThinkingPrometheus]

hiho@ll i have to convert a string from Variant to CString (or LPCTSTR) i read some articles about bstr conversion, but doesn't seem to work 1. i have a variant variable 2. i want to use MessageBox to show the Variant-String how do i do this? some code would be perfect thx

[Graham Bradshaw]

I'll help with the conversion (I'm sure you can handle the MessageBox!)

CString GetString(const VARIANT* pvaData)
{
	if (pvaData->vt == VT_BSTR)
		return pvaData->bstrVal;

	if (pvaData->vt == (VT_BSTR | VT_BYREF))
		return *pvaData->pbstrVal;

	if (pvaData->vt == (VT_VARIANT | VT_BYREF))
		return GetString(pvaData->pvarVal);


	VARIANT varDest;
	VariantInit(&varDest);


	if (SUCCEEDED(VariantChangeTypeEx(&varDest, (VARIANT*) pvaData, LOCALE_SYSTEM_DEFAULT, 0, VT_BSTR)))
		return GetString(&varDest);

	return _T("");
}

[Nilesh K]

Check here[^]

- Nilesh "Reading made Don Quixote a gentleman. Believing what he read made him mad" -George Bernard Shaw

[ThinkingPrometheus]

wow cool thx to both of you

[Anonymous]

hi you can take the variable of bstr type and assign variant to the bstr and then pass the bstr value in messagebox . It works cheers

[James R Twine]

If you know that the VARIANT contains a BSTR you can get the BSTR, which is really a special form of a wide-character string, and pass it to the wide-character version of MessageBox:

MessageBoxW( hWndParent, vtMyVariant.bstrVal, L"The Caption", ( MB_ICONINFORMATION | MB_OK ) )

(You could also pass in a dereferenced pbstrVal.)    Peace! -=- James

---

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)