How I got borderless windowed mode working on my setup.

[anarchistdalek]

This worked for me (Win7 x64, dual widescreen monitors, Radeon HD 6970):

- Fresh 0.20 Steam install with no addons (those come next, muhaha!)

- I ran the game and set graphics to 1920x1080 with fullscreen disabled, hit apply/accept, and restarted it. KSP still started fullscreen.

- I closed the game, then added -popupwindow to my desktop shortcut and started the game again (run as administrator is checked in the shortcut's compatibility tab.)

- For posterity, my shortcut's target field reads "D:\apps\steam\steamapps\common\Kerbal Space Program\KSP.exe" -popupwindow

- In-game, I went into settings and set the resolution to 1024x768, then hit apply and accept. Then I set it back to 1920x1080 and hit apply and accept.

- Now KSP is running at 1920x1080 in a borderless window. Since then, I've restarted the game (still using the popup window shortcut option) and it kept the setting. I hope this helps.

Edited May 24, 2013 by anarchistdalek

[khold]

Thank you!

This worked for non steam aswell

[anarchistdalek]

I can confirm this still works after multiple reboots etc. Glad to be of service!

[TheSec]

For some reason this solution doesn't work for me :S ?

[Steve-S]

Werked fore mi. Thanks. :-)

[SRV Ron]

The Windows key will bring up the desktop with KSP running in the background. An icon in the Toolbar will return you to the game.

[SolarLiner]

Well, you have in the Games Properties in Steam the ability to add arguments to the executable when launched. This is straightforward and requires no sorcery of any kind.

For non-steam users, you have to have a shortcut linking to the KSP.exe file. And then in its properties, you add -popupwindow in the target text box.

In a similar way, this is all the arguments you can add for special actions: http://docs.unity3d.com/Documentation/Manual/CommandLineArguments.html (under "Unity Standalone Command line arguments")

You can also append them, so for example "-popupwindow -single-instance -screen-quality Fastest" will launch KSP borderless, with only one instance allowed (if I try to launch a second KSP, it will switch to the first one), and with the "Fastest" graphic option.

"-screen-width 2048 -screen-height 1080 -force-opengl" will start KSP with a window of 2048x1080 (2k mode for NASA supercalculators ) and force the Open GL rendering method.

[Kerbal007]

Confirmed working in latest steam adding -popupwindow to run options thanks

[Jananton]

Am I correct in assuming this commandline option is what is added if KSP is started from the Launcher with the option borderless window checked?

Greets,

Jan

[DaveofDefeat]

Or if your using steam you can just add -windowed -noborder to the launch options.

[jaysparrow]

+DaveofDefeat This is fake or outdated and doesn't work with windows or steam games anymore.

+Admin please delete the last post because is the person I wanted to replay to.

[Stone Blue]

So I've had my desktop shortcut for KSP set to use OpenGL and open in a popupwindow. I now am trying to add a 2nd monitor. When KSP launches, the popup is centered between both displays: half on the left display, half on the right...Of course, being borderless I cant just drag it fully onto one of the displays.

Is there anyway to do this? Just for giggles, i tried adding the "--show-screen-selector" to see if something would appear where I could get it onto one screen or the other, but adding the argument didnt appear to do anything...???

Help!?

[plague006]

A decent chance people using google will land here (I did): make sure "fullscreen" is unticked in your graphics settings. That will supercede -popupwindow

[Firex]

Confirmed working with 1.0.5 using -popupwindow in Steam launch options.

Or if your using steam you can just add -windowed -noborder to the launch options.

This will NOT work, these options are for source games only such as TF2 and CSGO.

[Noittone]

Worked like a charm, registered only to thank you for this solution.