Is there a way to convert COLORREF to int?

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I tried to convert COLORREF to int but I don't find the correct way..

What I have tried:

I tried to search on internet, but I don't find the correct way

Posted 16-Apr-24 3:30am

Member 14594285

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jeron1 16-Apr-24 10:14am

Have you tried casting it? Something like,

int x = (int) dwValue;

2 solutions

Solution 2

The conversion is as easy as already answered but you need to take care when making it to a COLORREF again. You need the same byte order and the same color depth.
When you mismatch it the colors are weirdly changed.

To better learn about working with images you should read the CXimage article and dig through the sample code. You have to love it. ;-)

Posted 19-Apr-24 3:49am

KarstenK

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0x01AA 19-Apr-24 11:34am

Quote: "The conversion is as easy as already answered but you need to take care when making it to a COLORREF again"

Nope:
COLREF do have always the byte order BGR (ABGR), and assigning it to and from an int does note change it.

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Richard MacCutchan · Accepted Answer · 2024-04-16T04:04:00

Solution 1

COLORREF (Windef.h) - Win32 apps | Microsoft Learn[^]. As you can see it is defined as a DWORD (32 bits) so itis already an integer value.

Posted 16-Apr-24 4:04am

Richard MacCutchan

Comments

CPallini 19-Apr-24 10:36am

Indeed.