Can't override system brightness in UWP app

Asked May 10 '18 at 05:59

Active May 10 '18 at 05:59

Viewed 236 times

I tried to override system brightness from my UWP app. But When I tried to get BrightnessOverride instance, the code breaks at the below line.

var bo = BrightnessOverride.GetDefaultForSystem();

It throws a generic exception

"System.Runtime.InteropServices.COMException: 'Error HRESULT E_FAIL has been returned from a call to a COM component.'"

I have check the 'System Management' capability in manifest.

Note: I am running the app on my local machine.

asked May 10 '18 at 05:59

Tamil Selvan

On your local machine, go to Windows 10 Settings > Display. Is there a brightness slider at the top? – Sean O'Neil May 10 '18 at 06:43
@SeanO'Neil, Yes I have in my local system. But I need to control it from my UWP app through UWP APIs. – Tamil Selvan May 10 '18 at 07:31
Ok just making sure you were testing on a system where the OS can actually control the brightness. Hopefully someone can help you out. – Sean O'Neil May 10 '18 at 07:55

0 Answers0