BITBLTINFO Field - ulBltFlags

 ulBltFlags (ULONG) 
    Flags for rendering of rasterized data. 

    Miscellaneous flags used by the graphics engine for rendering of 
    rasterized data: 

    BF_DEFAULT_STATE               Blt direction is left to right and top 
                                   to bottom. 

    BF_DIR_X_NEGATIVE              Blt direction is towards X origin. 

    BF_DIR_Y_NEGATIVE              Blt direction is towards Y origin. 

    BF_ROP_INCL_SRC                ROP includes a source bit map. 

    BF_ROP_INCL_PAT                ROP includes a pattern bit map. 

    BF_SRC_TRANSPARENT             Source transparent involved. 

                                   SRC will not change when SRC=BG_COLOR. 

    BF_DST_TRANSPARENT             Destination transparent involved. 

                                   DST will not change when DST=BG_COLOR. 

    BF_PAT_TRANSPARENT             Pattern transparent involved. 

                                   Pattern not involved when PAT=BG_COLOR. 
                                   

    BF_PAT_SOLID                   Pattern is solid; all Foreground color. 
                                   

    BF_PAT_HOLLOW                  Pattern is hollow (empty); no 
                                   Foreground color. 

    BF_APPLY_BACK_ROP              Treat ROP as Foreground mix and 
                                   MonoBackROP as Background mix. 

    BF_SRC_MONOINVERT              Zero (0) bits are Foreground on 
                                   monochrome SRC bit map. 

    BF_PAT_MONOINVERT              Zero (0) bits are Foreground on 
                                   monochrome PAT bit map. 

    BF_SR_BITS_EXTERNAL            Source bit map bits are in a 
                                   nondevice-specific format. 

    BF_LAST_BLT                    Defines last blit in a banded BitBlit. 

    BF_SRC_Y_FLIP                  Source Y coordinates are inverted 
                                   relative to device origin.