public Variant(object?obj)
{
_data = 0;
VarEnum vt = VarEnum.VT_EMPTY;
if (obj is DateTime)
{
_objref = null;
_flags = CV_DATETIME;
_data = ((DateTime)obj).Ticks;
return;
}
if (obj is string)
{
_flags = CV_STRING;
_objref = obj;
return;
}
if (obj == null)
{
this = Empty;
return;
}
if (obj == System.DBNull.Value)
{
this = DBNull;
return;
}
if (obj == Type.Missing)
{
this = Missing;
return;
}
if (obj is Array)
{
_flags = CV_OBJECT | ArrayBitMask;
_objref = obj;
return;
}
// Compiler appeasement
_flags = CV_EMPTY;
_objref = null;
// Check to see if the object passed in is a wrapper object.
if (obj is UnknownWrapper)
{
vt = VarEnum.VT_UNKNOWN;
obj = ((UnknownWrapper)obj).WrappedObject;
}
else if (obj is DispatchWrapper)
{
vt = VarEnum.VT_DISPATCH;
Debug.Assert(OperatingSystem.IsWindows());
obj = ((DispatchWrapper)obj).WrappedObject;
}
else if (obj is ErrorWrapper)
{
vt = VarEnum.VT_ERROR;
obj = (object)(((ErrorWrapper)obj).ErrorCode);
Debug.Assert(obj != null, "obj != null");
}
else if (obj is CurrencyWrapper)
{
vt = VarEnum.VT_CY;
obj = (object)(((CurrencyWrapper)obj).WrappedObject);
Debug.Assert(obj != null, "obj != null");
}
else if (obj is BStrWrapper)
{
vt = VarEnum.VT_BSTR;
obj = (object?)(((BStrWrapper)obj).WrappedObject);
}
if (obj != null)
{
SetFieldsObject(obj);
}
// If the object passed in is one of the wrappers then set the VARIANT type.
if (vt != VarEnum.VT_EMPTY)
{
_flags |= ((int)vt << VTBitShift);
}
}
