def __init__(self, filename): """Insert a 24bit bitmap image in a worksheet. The main record required is IMDATA but it must be proceeded by a OBJ record to define its position. """ BiffRecord.__init__(self) self.width, self.height, self.size, data = _process_bitmap(filename) # Write the IMDATA record to store the bitmap data cf = 0x09 env = 0x01 lcb = self.size self._rec_data = pack("<HHL", cf, env, lcb) + data