cSave (LONG) - input
Indicates the saved DC state, which the handling routine uses to restore the transform. When cSave is passed as -1, the handling routine resets the transform to its initial state (-1 is passed to this routine from GreResetDC and is the only valid negative value). A value of 0 indicates that the transform is reset to its initial state. Other positive values identify which saved level is restored. See RestoreDCState.