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COleVariant::COleVariant

  • Article

Constructs a COleVariant object.

COleVariant( ); 
COleVariant( 
   const VARIANT& varSrc  
); 
COleVariant( 
   const COleVariant& varSrc  
); 
COleVariant( 
   LPCVARIANT pSrc  
); 
COleVariant( 
   LPCTSTR lpszSrc  
); 
COleVariant( 
   LPCTSTR lpszSrc, 
   VARTYPE vtSrc  
); 
COleVariant( 
   CString& strSrc  
); 
COleVariant( 
   BYTE nSrc  
); 
COleVariant( 
   short nSrc, 
   VARTYPE vtSrc = VT_I2  
); 
COleVariant( 
   long lSrc, 
   VARTYPE vtSrc = VT_I4  
); 
COleVariant( 
   const COleCurrency& curSrc  
); 
COleVariant( 
   float fltSrc  
); 
COleVariant( 
   double dblSrc  
); 
COleVariant( 
   const COleDateTime& timeSrc  
); 
COleVariant( 
   const CByteArray& arrSrc  
); 
COleVariant( 
   const CLongBinary& lbSrc  
); 
COleVariant( 
   LPCITEMIDLIST pidl 
);

Parameters

  • varSrc
    An existing COleVariant or VARIANT object to be copied into the new COleVariant object.

  • pSrc
    A pointer to a VARIANT object that will be copied into the new COleVariant object.

  • lpszSrc
    A null-terminated string to be copied into the new COleVariant object.

  • vtSrc
    The VARTYPE for the new COleVariant object.

  • strSrc
    A CString object to be copied into the new COleVariant object.

  • nSrc, lSrc
    A numerical value to be copied into the new COleVariant object.

  • vtSrc
    The VARTYPE for the new COleVariant object.

  • curSrc
    A COleCurrency object to be copied into the new COleVariant object.

  • fltSrc, dblSrc
    A numerical value to be copied into the new COleVariant object.

  • timeSrc
    A COleDateTime object to be copied into the new COleVariant object.

  • arrSrc
    A CByteArray object to be copied into the new COleVariant object.

  • lbSrc
    A CLongBinary object to be copied into the new COleVariant object.

  • pidl
    A pointer to a ITEMIDLIST structure to be copied into the new COleVariant object.

Remarks

All these constructors create new COleVariant objects initialized to the specified value. A brief description of each of these constructors follows.

  • COleVariant( )   Creates an empty COleVariant object, VT_EMPTY.

  • COleVariant( varSrc )   Copies an existing VARIANT or COleVariant object. The variant type is retained.

  • COleVariant( pSrc )   Copies an existing VARIANT or COleVariant object. The variant type is retained.

  • COleVariant( lpszSrc )   Copies a string into the new object, VT_BSTR (UNICODE).

  • COleVariant( lpszSrc**,** vtSrc )   Copies a string into the new object. The parameter vtSrc must be VT_BSTR (UNICODE) or VT_BSTRT (ANSI).

  • COleVariant( strSrc )   Copies a string into the new object, VT_BSTR (UNICODE).

  • COleVariant( nSrc )   Copies an 8-bit integer into the new object, VT_UI1.

  • COleVariant( nSrc**,** vtSrc )   Copies a 16-bit integer (or Boolean value) into the new object. The parameter vtSrc must be VT_I2 or VT_BOOL.

  • COleVariant( lSrc**,** vtSrc )   Copies a 32-bit integer (or SCODE value) into the new object. The parameter vtSrc must be VT_I4, VT_ERROR, or VT_BOOL.

  • COleVariant( curSrc )   Copies a COleCurrency value into the new object, VT_CY.

  • COleVariant( fltSrc )   Copies a 32-bit floating-point value into the new object, VT_R4.

  • COleVariant( dblSrc )   Copies a 64-bit floating-point value into the new object, VT_R8.

  • COleVariant( timeSrc )   Copies a COleDateTime value into the new object, VT_DATE.

  • COleVariant( arrSrc )   Copies a CByteArray object into the new object, VT_EMPTY.

  • COleVariant( lbSrc )   Copies a CLongBinary object into the new object, VT_EMPTY.

For more information on SCODE, see Structure of COM Error Codes in the Windows SDK.

Requirements

Header: afxdisp.h

See Also

Reference

COleVariant Class

Hierarchy Chart

COleVariant::operator =

CStringT Class

COleCurrency Class

COleDateTime Class