Support

Product: Borderless Fullscreen Keys (Stream Deck plugin for Windows) · Provider: GRAMSHIFT (Tokyo, Japan)

Contact

Email contact@gramshift.com in English or Japanese. We reply within 7 business days, usually sooner. Please include your Windows version (Settings > System > About), your Stream Deck app version, the name of the game or app, whether it runs as administrator, how many screens you use and their scaling, and a photo or screenshot of the key and of its settings (the Status line says what the plugin sees).

If a window stays without its frame

Bring that window to the front and press the key you used again, or press a Restore Windows key. Both put back the title bar, frame, position, size and maximized state the window had before.
If the key shows WINDOWED for that window and Restore Windows shows 0, the plugin no longer knows the window. This can happen when the plugin was ended by force and the window was then changed by something else. Closing the program and starting it again normally gives you a new window; we have not checked this for particular programs, and some programs remember the size of their last window.
The plugin changes nothing permanent on your PC: no Windows setting, no file of the program. Only the open window is changed.

Get started

Install the plugin from the Elgato Marketplace. In the Stream Deck app, find Borderless Fullscreen Keys in the action list and drag an action onto a key.
Start your game or app in windowed mode and click it so that it is in front. The key shows its name and WINDOWED.
Press the key. Press it again, with that window in front, to put the window back.

While the Stream Deck app itself is in front, the keys show --: the plugin never changes the Stream Deck app's own window.

The actions

Borderless Fullscreen: takes the title bar and frame off the window in front and makes it fill a screen. Screen: the screen the window is on, or one you choose. Fill: the whole screen (over the taskbar), or up to the taskbar.
Borderless Window: takes the title bar and frame off the window in front. Size: "Keep the size it has" leaves the inside of the window exactly where it is and as large as it is (the picture does not move by a pixel; the window just loses the frame around it). A set size (for example 1920 x 1080, or your own width and height from 200 to 16384) makes the window exactly that many pixels and puts it in the middle of the screen it is on. This is for streaming and recording at a fixed size.
Restore Windows: puts back every window the plugin changed. The key shows how many windows are changed now.

A press of Borderless Fullscreen or Borderless Window while a window the plugin already changed is in front always puts that window back first. To go from one to the other, press twice.

How it works, and what that means

The plugin asks Windows to change two things of the window: its frame styles (the title bar and the sizing border are switched off) and its position and size. Before that it reads and keeps the styles, position, size and placement (normal position, maximized or not) the window had. Then it reads the window again, and only if Windows reports no frame and exactly the rectangle asked for does the key say FULL or NO FRAME.

This is not exclusive full screen. The game keeps running in its windowed mode and keeps the resolution of the desktop. The plugin does not change any display setting of the game or of Windows. If the game has its own "borderless" or "windowed fullscreen" option, that option is the surer way: the game then knows about it.
It does not work with every program. Some programs draw their own title bar inside the window (it stays), some put their frame back, some do not redraw for the new size or keep a fixed size or aspect ratio, and a game may render at its old resolution and be stretched or leave a border. If the window does not take the change, the plugin undoes it at once and the key says FAILED. If the program changes the window again later, the key says CHANGED, and the next press puts the window back as it was before the plugin touched it.
A program that runs as administrator. Windows has a protection that is meant to keep a normal program from changing the window of a program that runs with higher rights. We expect the key to say FAILED for such a window, with the window left as it was. We have not tested this case.
The taskbar. With "The whole screen", Windows itself moves the taskbar behind the window while the window is in front; on our test PC that took less than 0.7 seconds. When another window comes to the front, the taskbar is shown again. With "Up to the taskbar" the taskbar stays visible. An auto-hidden taskbar or a taskbar at another edge was not tested.
Anti-cheat software. We make no statement about how any anti-cheat software treats a program that changes the frame of the game's window from outside. The plugin does not read or modify the memory or files of any game, injects nothing and sets no hook. If you are unsure, check the rules of your game before using it there, or use the game's own borderless option.
Never changed: the desktop, the taskbar and the other surfaces of Windows itself, the Stream Deck app, a minimized window, and a window whose program does not answer (the key says NO ANSWER).

When the plugin or the Stream Deck app ends

Event	What happens
The Stream Deck app closes its connection to the plugin (it quits, or restarts the plugin)	The plugin puts every changed window back, then ends. In our test the window was back as before and the plugin process had ended 27 milliseconds after the connection closed. (Tested by closing the connection from a test host, not by quitting the Stream Deck app itself.)
The plugin process is ended by force (Task Manager, a crash)	Nothing runs any more that could put the windows back: they stay without a frame. The list of changed windows is kept by the Stream Deck app. When the plugin starts again, it takes over the windows of that list that are still open, belong to the same process and still have no frame; a Restore Windows key then counts them and puts them back. (Tested by killing the plugin process and starting it again under a test host.)
You switch to another Stream Deck page or profile	Nothing: changed windows stay as they are, so that a profile that switches with the game does not undo full screen. Put a Restore Windows key where you can reach it.
A changed window is closed	It leaves the count. If Windows gives its handle number to another window later, the plugin notices (another process or window class) and does not touch that window.
A changed window is minimized when it is put back	It stays minimized and gets its frame back; when you show it again it is where it was, maximized if it was maximized.

What we tested, and what we did not

Tested on one PC (Windows 11, one 1920 x 1080 screen at 100 % scaling), with the plugin as shipped running on the Node.js of Stream Deck 7.6, on a plain resizable test window that belongs to another process: Borderless Fullscreen (the window and its inside were exactly the screen, read by a separate process), putting it back (styles, position, size and placement identical), the same from a maximized window (maximized again afterwards, same normal position), Borderless Window with "keep the size" (the inside did not move), the connection closing, and a kill followed by a restart and Restore Windows. Putting back a changed window while it is minimized was tested with the same Windows calls outside the plugin.

Not tested: any particular game or app; exclusive full-screen games; a program running as administrator; apps from the Microsoft Store; more than one screen and screens with different scaling on a real PC (the plugin works in real pixels per screen and this path is covered by automated tests with simulated screens only); scaling other than 100 %; HDR and variable refresh rate; whether a game runs faster or slower this way; anti-cheat software; quitting the real Stream Deck app while a window is changed; Windows 10; ARM PCs.

What the keys show

Key	Meaning
Dark, window name, `WINDOWED`, size	The window in front has not been changed by the plugin. The size is the inside of the window.
Green, window name, `FULL`	Read back from Windows: the window in front has no frame and is exactly on the rectangle the plugin gave it.
Green, window name, `NO FRAME`	The same for a window changed with Borderless Window.
Amber frame, `CHANGED` "press to restore"	The plugin changed this window, and the program or Windows changed it again since (a frame, another position or size). A press puts back what it had before the plugin touched it.
Gray, `--` "no window in front"	Nothing a press would change is in front (the desktop, the taskbar, the Stream Deck app).
Amber frame, `FAILED` "window refused"	The window did not take the new frame or size; it was put back as it was.
Amber frame, `NO WINDOW`, `MINIMIZED`, `NO ANSWER`, `ALREADY`, `BAD SIZE`	Why the press did nothing: no window to change, the window is minimized, its program does not answer, it already has no frame and is already there, or the width and height in the settings can not be used.
Restore Windows: a number	How many windows are changed by the plugin now (green when more than 0). After a press: `DONE`, or `FAILED` with the number that could not be put back (they stay in the count; press again later).
Amber frame, `--` "reinstall plugin"	The plugin could not load its Windows part. Remove the plugin in the Stream Deck app and install it again from the Elgato Marketplace.

Questions

The picture is stretched, or has black bars, after going full screen.
The game still renders at its old window size or keeps its aspect ratio. Use the game's own borderless option if it has one, or set the game's windowed resolution to your screen's resolution first.

The title bar is still there.
The program draws its own title bar inside the window. The plugin can only switch off the frame that Windows draws.

The key shows the name of another window than my game.
The key shows the window that is in front at that moment, which is the one a press acts on. Click the game first.

Can it make a game full screen automatically when it starts?
Not in this version. A window is only changed when you press a key.

Does it work on Mac?
No. This plugin is for Windows 10 and 11 only.

Privacy

To show the name of the window in front, the plugin reads window titles on your PC. Nothing is sent to us or to any online service. See the Privacy Policy for exactly what is read and what is kept.