Windows 10: How to programmatically disable snap for a window class

I have a MDI application and on Windows11 I have Snap enabled. Works fine with one oddity. If I do not have my application's MDI document maximized, when I move over the maximize button, the Snap window appears. I can click and entry and my application Snaps not the MDI child window. How can I disable this as I only want the application to snap.I added a handler for WM_NCHITTEST to my MDI child window but if I don't return HTMAXBUTTON, I get no highlighting on the button and it doesn't react to clicks. Spying on the messages the window gets I don't see anything that I might intercept to prev

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Disabling Snap

Hi Dan,

Snap assist is a neat productivity feature especially for those of us who have multiple windows open at once. If you're having issues disabling the feature and you've done all the steps on how to disable the said feature to no avail, let's try a different approach.
We've found a thread similar to your concern. Check this thread
and see if the steps will work for you. If not, you can also post directly on our
TechNet Windows 10 Networking forum to have further assistance from our IT Professionals.

Let us know if you need anything else. We're here to help.

 

Snap Assist

Hi Cory,

The Snap Assist allows you to juggle apps, arrange open windows, resize windows by simply dragging and dropping them to the edges of the screen. If you don't want to get a quarter screen snap, you can change the settings of Snap Assist by follow the steps below:

• Open the Settings app
• Click System.
• Click Multitasking.
• You can turn off some of the option of Snap Assist on this window.

If you want to disable Snap Assist, you can turn off Arrange windows automatically by dragging them to the sides or corners of the screen.

Should you have further queries, feel free to post it.

 

How do I disable the Snap feature?

Hi Abby,

To help on how to disable the Snap Feature on Windows 10, you may follow the steps below:

1. Navigate to Settings, System and then Multitasking.

2. Adjust the settings in the Snap window as you see fit. Disable them all to turn off all snap features.

3. Close Settings.

Let us know if you need further assistance.