Flags for the Combine Method

The following are the flags that define treatment of the source rectangle:

Value	Meaning
CB_SRC_NOP	No change.
CB_SRC_NOT	Invert the color, resulting in its complement.
CB_SRC_0	Change all bits to 0.
CB_SRC_1	Change all bits to 1.

The following are the flags that define treatment of the destination rectangle:

Value	Meaning
CB_DST_NOP	No change.
CB_DST_NOT	Invert the color, resulting in its complement.
CB_DST_0	Change all bits to 0.
CB_DST_1	Change all bits to 1.

The following are the flags that define the operation to use when combining the data:

Value	Meaning
CB_OP_AND	Combine each set of bytes using a bitwise AND (&).
CB_OP_OR	Combine each set of bytes using a bitwise OR ( \| ).
CB_OP_XOR	Combine each set of bytes using a bitwise exclusive OR (^).
CB_OP_ADD	Add the byte values, allowing a maximum of 255.
CB_OP_SUBSRC	Subtract the source from the destination, allowing a minimum of 0.
CB_OP_SUBDST	Subtract the destination from the source, allowing a minimum of 0.
CB_OP_MUL	Multiply the byte values, allowing a maximum of 255. The result is calculated as follows: result = (source dest) / 255.*
CB_OP_DIVSRC	Divide the destination by the source. If source > 0, then the result is calculated as follows: result = min( (dest / source) 255, 255 ).* Otherwise, if source = 0, then result = 255.
CB_OP_DIVDST	Divide the source by the destination. If dest > 0, then the result is calculated as follows: result = min( (source / dest) 255, 255 ).* Otherwise, if dest = 0, then result = 255.
CB_OP_AVG	Use the average of the two values.
CB_OP_MIN	Use the lesser of the two values.
CB_OP_MAX	Use the greater of the two values.

The following are the flags that define treatment of the resulting image rectangle:

Value	Meaning
CB_RES_NOP	No change.
CB_RES_NOT	Invert the color, resulting in its complement.
CB_RES_0	Change all bits to 0.
CB_RES_1	Change all bits to 1.