Windows 11 - Accessibility Color Filters

Question

Hi, Does everyone have a sample using C# for Windows 11 Accessibility Color Filters? Im making one sample, but, Im newbie at Windows SDK. Regards, Igor.

Answer 1

Hello @Igor Felipe Pereira Gutierrez (CC0) ,

Welcome to Microsoft Q&A!

It is recommended to use Win32 api MagSetFullscreenColorEffect, here is a grayscale example. You can also modify the matrix to achieve multiple colors.

//​using static Vanara.PInvoke.Magnification;
//using static Vanara.PInvoke.User32; 

 float redScale = 0.2126f, greenScale = 0.7152f, blueScale = 0.0722f;

 var magEffectInvert = new MAGCOLOREFFECT(new[,] { // MagEffectInvert
		 { redScale,   redScale,   redScale,   0.0f,  0.0f, },
         { greenScale, greenScale, greenScale, 0.0f,  0.0f, },
         { blueScale,  blueScale,  blueScale,  0.0f,  0.0f, },
         { 0.0f,       0.0f,       0.0f,       1.0f,  0.0f, },
         { 0.0f,       0.0f,       0.0f,       0.0f,  1.0f }
         });


 MagInitialize();
 MagSetFullscreenColorEffect(magEffectInvert);   

Thank you.

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Answer 2

Hey, here is an sample I made:

It's a simple WPF, with Button to make Screen in Black and White. I'm working it, to be complete done. https://github.com/acigorgutierrezdc/Wsbwog-WPF-PM Thank's, Igor Felipe Pereira Gutierrez.