Objective c 如何将NSColor对象的值更改为其8位值

我需要将NSColor对象的值转换为8位整数值

代码：

uint8_t r = (uint32_t)(MIN(1.0f, MAX(0.0f, [[CWhiteBoardController ReturnFillColor] redComponent])) * 0xff);

uint8_t g = (uint32_t)(MIN(1.0f, MAX(0.0f, [[CWhiteBoardController ReturnFillColor] greenComponent])) * 0xff);

uint8_t b = (uint32_t)(MIN(1.0f, MAX(0.0f, [[CWhiteBoardController ReturnFillColor] blueComponent])) * 0xff);

uint8_t a = (uint32_t)(MIN(1.0f, MAX(0.0f, [[CWhiteBoardController ReturnFillColor] alphaComponent])) * 0xff);

uint8_t value = (a << 24) | (r<< 16) | (g << 8) | b;

uint8\u t r=（uint32\u t）（最小值（1.0f，最大值（0.0f，[[CWhiteBoardController ReturnFillColor]红色组件]）*0xff）；
uint8_t g=（uint32_t）（最小值（1.0f，最大值（0.0f，[[CWhiteBoardController ReturnFillColor]绿色组件]）*0xff）；
uint8_t b=（uint32_t）（最小值（1.0f，最大值（0.0f，[[CWhiteBoardController ReturnFillColor]蓝色组件]）*0xff）；
uint8_t a=（uint32_t）（最小值（1.0f，最大值（0.0f，[[CWhiteBoardController ReturnFillColor]alphaComponent]））*0xff）；
uint8_t value=（a我知道了这个问题，实际上我需要写

int value=（a我知道了这个问题，实际上我需要写

int value=（a请格式化代码使其可读请格式化代码使其可读