he height = 2x the actual height:
                     .biHeight = .biHeight \ 2
                     .biPlanes = 1
                     .biBitCount = 1
                     .biCompression = BI_RGB
                     .biSizeImage = 0
                     .biXPelsPerMeter = 0
                     .biYPelsPerMeter = 0
                     .biClrUsed = 0
                     .biClrImportant = 0
                  End With
                  ' Set up monochrome colour palette:
                  With .bmiColors(