 copy of the BitmapInfoHeader structure:
               CopyMemory tBMIMono.bmiHeader, m_tBits(nIndex - 1).bBits(0),
                Len(tBMIH)
               
               ' Find the Mask bits within the icon.  These directly follow the
                XOR bits
               ' so we find the XOR bits and then add the size of the AND DIB:
               lXor = FindDIBits(tBMIMono.bmiHeader)
               lAnd = lXor + m_tIDE(nIndex - 1).bHeight * 1# *
                WidthBytes(tBMIMono.bmiHeader.biWidt