How to disable window transitions on Windows 11?

Question

How to disable window transitions on Windows 11?

Leonardo 96

I have been able to disable it on Windows 10 with the following winapi:

   BOOL disable = TRUE;
   DwmSetWindowAttribute(hwnd, DWMWA_TRANSITIONS_FORCEDISABLED, &disable, sizeof(disable));

But its not working on Windows 11.

I'm referring to this transparent glass effect seen at the bottom:

Windows 10:

NVIDIA_Share_xL16Znb0hc

Windows 11:

AnyDesk_urN1CueGLe

Junjie Zhu - MSFT 21,646 Reputation points

2023-02-20T07:21:14.4433333+00:00

Hello @Leonardo ,

Welcome to Microsoft Q&A!

I can reproduce same issue, I will discuss with the team if this is a bug or is there any other way for win11 to set.

Thank you.
Leonardo 96 Reputation points

2023-02-21T06:57:26.4833333+00:00

Thank you, let me know!
Junjie Zhu - MSFT 21,646 Reputation points

2023-02-27T07:38:03.5166667+00:00

Hi @Leonardo ,

I've discussed this with the team today, and we'll continue to look into whether this is supported in win11 or is there some other way to do it.

Thank you.

1 answer

Your answer

Junjie Zhu - MSFT 21,646 Reputation points

2023-02-20T07:21:14.4433333+00:00

Hello @Leonardo ,

Welcome to Microsoft Q&A!

I can reproduce same issue, I will discuss with the team if this is a bug or is there any other way for win11 to set.

Thank you.
Leonardo 96 Reputation points

2023-02-21T06:57:26.4833333+00:00

Thank you, let me know!
Junjie Zhu - MSFT 21,646 Reputation points

2023-02-27T07:38:03.5166667+00:00

Hi @Leonardo ,

I've discussed this with the team today, and we'll continue to look into whether this is supported in win11 or is there some other way to do it.

Thank you.

Answer 1

Junjie Zhu - MSFT 21,646

Hi @Leonardo

Welcome to Microsoft Q&A!

The window transition on Windows 11 is actually the "snap assist window" which is a new feature implemented on Win11. This can be controlled in the control panel by following instructions: Settings -> System -> Multitasking -> Snap windows. Select the "On"/"Off" button to enable/disable this feature on Win11.

There seems to be no way to control this in programming on win11. One possible way is to set the registry key to enable/disable this feature: [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] "SnapAssist"=dword:00000000 Set 0 to disable this feature and set 1 to enable it.

This may need restart or sign out/sign in to take effect.

Thank you.

Junjie

Leonardo 96 Reputation points

2023-03-03T16:46:22.5333333+00:00

Thank you for looking at it Junjie, the option you mentioned really 'disabled' this transparent thing however, this disable it everywhere and not just in my Gui.

I'm looking for this because my Gui has a custom shape, i have modified her rect on WM_NCCALCSIZE and when its being resized to a edge it looks weird because this transparent rectangle fill the areas where my Gui is not drawing anything.

Do you think its possible adding an option to disable it only to our own window? like the option i have mentioned before DWMWA_TRANSITIONS_FORCEDISABLED?
Junjie Zhu - MSFT 21,646 Reputation points

2023-03-07T06:55:33.6566667+00:00

Sorry, there is no other workaround yet on win11.

You can file this bug in GitHub issue, so you get the latest update.

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How to disable window transitions on Windows 11?

1 answer

Your answer