以下是 CDC::GetColorAdjustment 方法的声明:
BOOL GetColorAdjustment(LPCOLORADJUSTMENT lpColorAdjust) const;
- lpColorAdjust:指向 COLORADJUSTMENT 结构的指针,用于接收颜色调整的信息。
COLORADJUSTMENT 结构包含了颜色调整的详细信息:
typedef struct tagCOLORADJUSTMENT {
WORD caSize;
WORD caFlags;
WORD caIlluminantIndex;
WORD caRedGamma;
WORD caGreenGamma;
WORD caBlueGamma;
WORD caReferenceBlack;
WORD caReferenceWhite;
SHORT caContrast;
SHORT caBrightness;
SHORT caColorfulness;
SHORT caRedGreenTint;
} COLORADJUSTMENT;
示例代码如下:
COLORADJUSTMENT colorAdjustment;
BOOL success = myCDC.GetColorAdjustment(&colorAdjustment);
if (success) {
// 处理颜色调整的信息
WORD redGamma = colorAdjustment.caRedGamma;
WORD greenGamma = colorAdjustment.caGreenGamma;
WORD blueGamma = colorAdjustment.caBlueGamma;
// ...
}
这个方法通常在需要了解设备上下文中颜色调整信息的情况下使用。颜色调整信息包括了调整颜色的各种参数,如伽马值、对比度、亮度等,可以用于实现对图像颜色的精细控制。
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