Campare COLORREF and Char

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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.

VB

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.

Posted 5-Aug-10 13:52pm

FISH786

Updated 5-Aug-10 16:10pm

v2

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4 solutions

Solution 3

I think you mean this:

C++

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

Posted 5-Aug-10 21:20pm

Sauro Viti

Solution 1

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

Isn't COLORREF represented as hex? See here[^]

Posted 5-Aug-10 14:56pm

Yusuf

Comments

[no name] 6-Aug-10 6:00am

What do you mean by "represented as hex"? Every thing thats fed to a computer is ultimately a number that can be interpreted as hex if one likes.

Yusuf 6-Aug-10 9:25am

When specifying an explicit RGB color, the COLORREF value has the following hexadecimal form. 0x00bbggrr

[no name] 6-Aug-10 13:15pm

That's just a convinient form that's all. You can give that in any form that's considered number by the compiler. Just because you input anything in some form doesn't mean that it is "represented" in that form.

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bleedingfingers · Accepted Answer · 2010-08-05T20:17:00

Solution 2

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

Posted 5-Aug-10 20:17pm

bleedingfingers

Orjan Westin · Accepted Answer · 2010-08-06T13:48:00

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).