| Platform SDK: International Features | 
An application sends the IMC_GETCOMPOSITIONFONT command to an IME window to retrieve the logical font used for displaying intermediate characters in the composition window.
To send this command, use the WM_IME_CONTROL message with wParam and lParam set as follows.
Returns zero if successful, nonzero otherwise.
  Windows NT/2000: Requires Windows NT 4.0 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Imm.h.
Input Method Editor Overview, Input Method Editor Commands, LOGFONT