CGBitmapContextCreate is error ,can't use like this

[carbonZhao]

CGContextRef imageContext = CGBitmapContextCreate(imageData, (size_t)subimageRect.size.width, (size_t)subimageRect.size.height, 8, (size_t)subimageRect.size.width * 4, genericRGBColorspace, kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedLast);

the last params is wrong!

what is 'kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedLast) '?

the last params is CGBitmapInfo type!!!!!!!!

what a fuck!!!