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Information:

  • Resolution: 1680 x 1050
  • Graphics model & driver: Nvidia Quadro K420
  • Monitor model: DELL 3007WFPHC
  • Connection type: DVI

This is the information for my current setup, but I am having the same issue on my Lenovo Thinkpad Carbon Gen7 that has no monitor, and is running 1920x1080 resolution.

I am running Windows 10 and use the window snapping feature quite often by holding down the windows key and using the arrow keys. However, an issue I consistently run into is when I snap a window to the left or right side of the screen, it almost always doesn't fill the window.

There was a similar question asked on Microsoft forums (https://answers.microsoft.com/en-us/windows/forum/all/multi-tasking-snap-not-resizing-windows-to-fill/50a7acfe-3c26-4586-81aa-1355c1015766) but the only response by a technician was to make sure the When I snap a window, automatically size it to fill available space setting is enabled, which I do have enabled.

enter image description here

Here are additional images from own PC of the behavior. You can see the top of the browser literally being cutoff from the monitor display in the first picture.

Not Fully Snapped Not fully snapped

Fully Snapped Fully snapped

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14
  • probably there are some app that lays a transparent bar on top of the desktop, or there are some issues with the graphics driver?
    – phuclv
    Commented Apr 13, 2021 at 0:10
  • Use Process Explorer and drag the bullseye icon over the empty space. This will find the process whose window is taking up this space. If that process is explorer.exe, this means the desktop, so that space is truly empty and snap isn't working correctly.
    – harrymc
    Commented Apr 14, 2021 at 20:13
  • Snapping for me DOES fill the whole area, however I DO still get the resize-arrow-cursor at the top & is cut off just like yours so this is normal. Is the screenshot from your PC or a random one on the internet? I see the black bar at top, however since your resize-arrow-cursor is getting cut off I am wondering if its been edited into the photo? Maybe your monitor settings need to be adjusted, but even if YOU saw black bar at top a screenshot wouldn't capture that. Please provide another screenshot AFTER you adjust one of the snapped windows to be maximum height
    – gregg
    Commented Apr 16, 2021 at 13:41
  • Can you update question with your: 1)Resolution. 2)Graphics model & driver . 3)Monitor model & connection type (VGA, DVI, HDMI, DP)
    – gregg
    Commented Apr 16, 2021 at 13:51
  • @gregg I added additional images of my PC. You can see the browser is being cutoff at the top of the monitor. It appears to be trying to resize to resolution larger than the monitor and then after snapping the window again resizes to the correct resolution.
    – Alex F
    Commented Apr 16, 2021 at 13:52

1 Answer 1

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The Windows metrics for displaying graphic windows can be found under the registry key HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics.

The problem here was solved by setting PaddedBorderWidth and BorderWidth to zero (0).

The units for these values are in twips and may contain as value any negative number up to 0. A value of 0 will produce no padding, while for example a value of -300 will produce a very fat border. PaddedBorderWidth should be larger or equal to BorderWidth.

The limits are:

  • BorderWidth - valid values are 0 to -750
  • PaddedBorderWidth - valid values are 0 to -1600

enter image description here

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