Flags for the CombineExt Method

Note:

Arithmetic calculations in this table assume 24-bit image data.

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.
CB_OP_ABSDIF	Calculate the absolute difference between 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.

The following are the flags that define the channel of the source image rectangle:

Value	Meaning
CB_SRC_MASTER	perform operation on all Channels.
CB_SRC_RED	perform operation on Red Channel.
CB_SRC_GREEN	perform operation on Green Channel.
CB_SRC_BLUE	perform operation on Blue Channel.

The following are the flags that define the channel of the destination image rectangle:

Value	Meaning
CB_DST_MASTER	perform operation on all Channels.
CB_DST_RED	perform operation on Red Channel.
CB_DST_GREEN	perform operation on Green Channel.
CB_DST_BLUE	perform operation on Blue Channel.

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

Value	Meaning
CB_RES_MASTER	perform operation on all Channels.
CB_RES_RED	perform operation on Red Channel.
CB_RES_GREEN	perform operation on Green Channel.
CB_RES_BLUE	perform operation on Blue Channel.