Returns the lower bound for a given dimension of the array.
UINT uDim = 0
The array dimension for which to get the lower bound. If omitted, the default is 0.
Returns the lower bound.
If the lower bound is 0, this indicates a C-like array whose first element is element number 0. In the event of an error, for example, an invalid dimension argument, this method calls AtlThrow with an HRESULT describing the error.