Campare COLORREF和Char [英] Campare COLORREF and Char

问题描述

你好，

有人可以告诉我如何将COLORREF转换为char吗?

我已经看到了将它们转换为CString的示例.

COLORREF Color;
char Temp[256];
Color = GetPixel(MemDC,Point2.x,Point2.y);

如何获取颜色"到温度"作为十六进制值?

在此先感谢

是的.

我正在尝试从不同的像素获得以下语句.

 如果(颜色1 == " && Color2 == " 
        && Color3 == " && Color4 == " 
        && Color5 == " )

除了将COLORREF转换为字符串或char之外，我还能设法做到这一点.

我是新来的，试图对没有注释的代码进行调试.

解决方案

COLORREF是一个普通的长字，它是类型定义的.

我认为你的意思是:

 COLORREF颜色；
字符 Temp [ 256 ];
颜色= GetPixel(MemDC，Point2.x，Point2.y);
sprintf_s(Temp，" ，彩色); 

COLORREF是一个32位无符号整数的typedef.

因此，可以像下面的示例一样比较值，而不是比较字符串:

if (Color1 == 0x414141 && Color2 == 0x3a3a3a
        && Color3 == 0xd2d2d2 && Color4 == 0
        && Color5 == 0 )

这会将Colour1，Color2和Color3与三种不同的灰色阴影进行比较(红色，绿色，蓝色这三个值相同的任何颜色都会给出灰度结果).

Hello,

Can someone pls tell me how do I convert COLORREF to char?

I have seen examples to convert them into CString.

COLORREF Color;
char Temp[256];
Color = GetPixel(MemDC,Point2.x,Point2.y);

How do I get Color to Temp as a hex value?

Thanks in Advance

Yes It is.

I am trying to achive the following statement from different pixels.

if (Color1 == "414141" && Color2 == "3a3a3a"
        && Color3 == "d2d2d2" && Color4 == "0"
        && Color5 == "0" )

How else but to either turn the COLORREF into a string or char will I manage to achive that.

I am new at this and trying to degug a code, that was left behind with no comments.

解决方案

COLORREF is a plain long which is typedef''ed. Use sprintf with ''x'' for format specifier.

I think you mean this:

COLORREF Color;
char Temp[256];
Color = GetPixel(MemDC,Point2.x,Point2.y);
sprintf_s(Temp, "%06x", Color);

COLORREF is, as people have said, a typedef of a 32-bit unsigned integer.

So instead of comparing strings, as your example, you can compare values like this:

if (Color1 == 0x414141 && Color2 == 0x3a3a3a
        && Color3 == 0xd2d2d2 && Color4 == 0
        && Color5 == 0 )

This compares Colour1, Color2 and Color3 to three different grey shades (any colour where the three values - Red, Green, Blue - are the same give a greyscale result).

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