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VarUI4FromStr (Compact 2013)

3/26/2014

This function converts variant data types to unsigned longfromBSTR.

Syntax

WINOLEAUTAPI VarUI4FromStr(
  BSTR strIn, 
  LCID lcid, 
  ULONG dwFlags, 
  ULONG* pulOut 
);

Parameters

  • strIn
    [in] The value to coerce.
  • lcid
    [in] For conversions from string and VT_DISPATCH input, the LCID to use for the conversion.
  • dwFlags
    [in] One or more of the following flags:

    Flag

    Description

    LOCALE_NOUSEROVERRIDE

    Uses the system default locale settings, rather than custom locale settings.

    VAR_TIMEVALUEONLY

    Omits the date portion of a VT_DATE and returns only the time.

    Applies to conversions to or from dates.

    Not used for VariantChangeType and VariantChangeTypeEx.

    VAR_DATEVALUEONLY

    Omits the time portion of a VT_DATE and returns only the date.

    Applies to conversions to or from dates.

    Not used for VariantChangeType and VariantChangeTypeEx.

  • pulOut
    [out] Points to the coerced value.

Return Value

The following HRESULT values can be returned.

Value

Description

S_OK

Success.

DISP_E_BADVARTYPE

The input parameter is not a valid type of variant.

DISP_E_OVERFLOW

The data pointed to by the output parameter does not fit in the destination type.

DISP_E_TYPEMISMATCH

The argument could not be coerced to the specified type.

E_INVALIDARG

An argument is invalid.

E_OUTOFMEMORY

Memory could not be allocated for the conversion.

Remarks

Passing invalid (and under some circumstances NULL) pointers into this function causes an unexpected termination of the application.

To determine whether the platform supports this function, see Determining Supported COM APIs.

Requirements

Header

oleauto.h

Library

oleaut32.lib

See Also

Tasks

Determine Supported COM APIs

Reference

OLE Functions
Automation Functions
BSTR
VariantChangeType
VariantChangeTypeEx