COleVariant problem with strings

Fadel Al-Jaifi -- hamd@ritsec3.com.eg
Tuesday, June 25, 1996

vc++ 4.0 /win95

Hello there

I have a problem with COleVariant ,

I created an object of type COleVariant and passed a CString object
as a parameter to the constructor ,then when I used V_BSTRT to
retrieve the string ,I only got the first character.
here is the code:
        
COleVariant var(CString(_T("any text")));
AfxMessageBox(V_BSTRT(&var));

then I only got the first character displayed in the message box!

I hope somebody can help..
thanks
fadel

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Rohit Namjoshi -- namjoshi@slb.com
Thursday, June 27, 1996

[Mini-digest: 3 responses]

	Unicode strikes again! Try:

COleVariant var(CString(_T("any text")), VT_BSTRT);

Cheers... Rohit
--
Rohit Namjoshi                      namjoshi@austin.asc.slb.com
Schlumberger Austin Product Center         Vox: +1 512 331 3353
Austin, TX 78726,  USA                     Fax: +1 512 331 3320


-----From: CraigTT@ccmail01.PE-Nelson.COM

     
Fadel,

I'm assuming that you're compiling ANSI rather than UNICODE since you're using 
Win95.  BSTR's are always UNICODE.  The COleVariant constructor takes your ANSI 
string and converts it to UNICODE for you.  When you pass this to AfxMessageBox,
it tries to interpret this as ANSI and sees the second half of the first UNICODE
character as a NULL character and thinks it's done displaying the text.

Tim Craig
PE-Nelson

-----From: "Julius Hamelberg" 

     
     Try this function:
     HRESULT VariantChangeType(pvargDest, pvargSrc, wFlags, vtNew)
     

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