How to switch to DRR using windows api?

Question

How to switch to DRR using windows api?

zzz-R 5

Windows 11 has added DRR(Dynamic refresh rate) features, what if I want to switch to DRR through the windows api?

Screenshot 2023-04-03 014247

Anonymous

2023-04-13T01:52:46.9+00:00

Any updates about this?
zzz-R 5 Reputation points

2023-04-13T06:45:05.04+00:00

This API does not support switching to DRR.

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Anonymous

2023-04-13T01:52:46.9+00:00

Any updates about this?
zzz-R 5 Reputation points

2023-04-13T06:45:05.04+00:00

This API does not support switching to DRR.

Answer 1

Xiaopo Yang - MSFT 12,731 Microsoft External Staff

Hello, Welcome to Microsoft Q&A!

As the thread said, you can ChangeDisplaySettings with specifying the dmDisplayFrequency field of DEVMODE before checking the DRR(Dynamic refresh rate) value.

Thank you.

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zzz-R 5 Reputation points

2023-04-13T06:43:22.57+00:00

This API only supports switching to 240hz/120hz/60hz. Are there any other API?
Xiaopo Yang - MSFT 12,731 Reputation points Microsoft External Staff

2023-04-14T05:57:36.2766667+00:00

Now that, there could be not a function can do this. Windows is free to implement the dynamic refresh rate as a feature. But I'll also consult this next Monday.
Xiaopo Yang - MSFT 12,731 Reputation points Microsoft External Staff

2023-04-18T02:21:55.1033333+00:00

@zzz-R , for dynamic refresh rate, there is no API to get this after consulting. You may turn to hardware interfaces.
zzz-R 5 Reputation points

2023-04-21T05:06:55.5266667+00:00

Got it, thanks for your reply.
Lin, Weiting (CW) 0 Reputation points

2023-11-27T02:10:13.0766667+00:00

Hello, is it still not support switch to DRR through the windows API?
Xiaopo Yang - MSFT 12,731 Reputation points Microsoft External Staff

2023-11-27T02:51:46.05+00:00

I haven't seen a message that says a Windows API has been released for DRR support.

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How to switch to DRR using windows api?

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