// classic Porter-Duff compositions
// http://keithp.com/~keithp/porterduff/p253-porter.pdf
+ wxCOMPOSITION_INVALID = -1, /* indicates invalid/unsupported mode */
wxCOMPOSITION_CLEAR, /* R = 0 */
wxCOMPOSITION_SOURCE, /* R = S */
wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */
wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */
// mathematical compositions
- wxCOMPOSITION_ADD, /* R = S + D */
+ wxCOMPOSITION_ADD /* R = S + D */
};
class WXDLLIMPEXP_FWD_CORE wxWindowDC;