Enables or disables the Header feature of the printer driver.
SetHeaderEnabled (pDevMode As Long, bEnable As Boolean) As Boolean
Input value - Handle to the BlackIceDEVMODE structure
Input value - Set to TRUE to enable the Header, set to FALSE to disable it.
Return value - TRUE on success, FALSE otherwise.
NOTE: For 32-bit applications, use pDevMode as Integer, instead of Long.