C language function:InitVariantFromGUIDAsString sample codes

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TITLE : VariantToDouble function (Windows)
HRESULT InitVariantFromGUIDAsString(.......
http://msdn.microsoft.com/en-us/library/windows/desktop/bb762326(v=vs.85).aspx


TITLE : VariantToDouble function (Windows)
HRESULT hr = InitVariantFromGUIDAsString(FMTID_DocSummaryInformation, &var);.......
http://msdn.microsoft.com/en-us/library/windows/desktop/bb762326(v=vs.85).aspx
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