A fullscreen-era game assumes it owns your only monitor. A modern desk — two or three screens, a stream or recording running, chat on the side — breaks that assumption completely. The game seizes the primary display, your other screens flicker or go dark, alt-tabbing risks a crash, and your capture software records a black rectangle. Running the game in a DxWnd window is what turns it back into a well-behaved citizen of a multi-monitor, always-recording desktop.
Why Exclusive Fullscreen Fights Capture Software
Capture tools such as OBS offer two relevant ways to record a game. Game capture hooks into the game’s rendering directly; window capture records an ordinary window the way it would record any application. Classic games stress both. Their exclusive fullscreen mode switches the display’s resolution and refresh behaviour, and every switch is a chance for the capture to lose the picture, stutter, or record black. DirectDraw-era titles are the worst offenders — some render in ways modern capture hooks barely see at all.
A game running in a stable DxWnd window sidesteps the whole class of problems. The window doesn’t change your display mode when it opens or closes, it survives alt-tab without minimising or crashing, and window capture can lock onto it once and keep recording — including while you click away to your second monitor to check chat. This is a big part of why the general DxWnd workflow matters to streamers even when the game itself runs fine.
Putting the Game on the Monitor You Choose
In a multi-monitor setup, Windows treats all your screens as one continuous desktop coordinate space. A window’s position is just an X/Y coordinate in that space — a monitor sitting to the left of your primary can live at negative X coordinates, and one above it at negative Y. DxWnd’s per-game window position uses exactly this system, so you can park a classic game on your secondary screen permanently while your primary stays free for the stream preview, recording controls or work.
The coordinate mechanics — where 0,0 sits, how to find the numbers for your layout, and how window size interacts with the game’s internal resolution — are covered in the dedicated guide to DxWnd window size and position settings. The short version: set the position once in the profile, and the game opens on the right screen every time, captured or not.
Focus, Mouse and the Second Screen
Fullscreen games punish you for looking away: click on another monitor and the game minimises, pauses badly or loses its mouse. A windowed game is far more forgiving. You can move the pointer to your streaming controls and back, and the game keeps rendering in its window — which also means your capture keeps showing gameplay instead of a frozen frame.
The remaining quirk is the mouse itself: many old games expect to own the cursor, and a cursor that escapes the window mid-game is annoying on one screen and chaos on three. DxWnd’s per-game mouse and clipping behaviour is part of its standard profile settings — the settings guide explains where those options live — and if the cursor still misbehaves, the mouse troubleshooting guide works through the causes in order.
Making a Small Window Fill a Stream Layout
One honest limitation: DxWnd windows the game at (or scaled from) its internal resolution, and many classics render at 640×480 or 800×600. In a 1080p stream layout that’s a small picture in a big frame. You have three clean options:
- Let the window be bigger. If the game tolerates a larger window, DxWnd can scale its output up — quality depends on the game, and text can go soft.
- Upscale the window with a dedicated scaler. This is the standard pairing: DxWnd produces the window, then a tool built for scaling — Magpie is the free, open-source option — enlarges it with integer scaling or a filter of your choice. The comparison in DxWnd vs Magpie explains the division of labour.
- Design around it. Plenty of retro streams deliberately show the game at a crisp integer-scaled size inside a themed layout. A sharp 3× picture beats a blurry stretched one.
Whichever you choose, keep the game’s original aspect ratio. A 4:3 game stretched to 16:9 looks wrong on stream exactly as it does on your own screen, and no capture setting downstream will fix it.
Two-PC Setups and Capture Cards
If you stream with a dedicated second PC, the capture card sits between the machines and records whatever the gaming PC sends to the “monitor” the card pretends to be. Windowed mode helps here too, for a mundane reason: a mirrored or extended desktop with a game window on it is a stable, unchanging signal. An exclusive-fullscreen classic that keeps switching display modes forces the card to re-sync on every switch, and viewers see the dropouts. With the game in a DxWnd window, the desktop resolution never changes, the card never re-syncs, and you can arrange the game, your webcam preview and your monitoring tools across your real monitors however you like while the card carries the composed picture.
The same stability argument covers local recording. Whether the file lands on the same machine or the stream goes out live, the capture target either holds still or it doesn’t — and a window holds still.
What Windowed Mode Doesn’t Fix
Honesty about the limits: windowing solves presentation, not rendering. If a game draws its picture incorrectly — wrong colours, missing textures, a palette that shifts — that problem exists inside the window too, and it belongs to the troubleshooting trail (the wrong-colours guide is the usual first stop). A few games also hide the mouse cursor in ways capture software can’t follow, or tie their internal speed to fullscreen timing; window capture will faithfully record those quirks. DxWnd’s own per-game options handle some of them, which is another reason the profile — not just the window — is worth setting up properly for a game you plan to stream more than once.
The Short Checklist
- Run the game through DxWnd with Run in Window enabled, at its native resolution first.
- Set the window position so it lands on the monitor you want to capture.
- Use window capture on the DxWnd game window; test alt-tabbing before you go live.
- If the picture is too small for your layout, upscale the window (Magpie) rather than fighting the game’s internals.
- Save the profile — the whole arrangement, position included, is remembered per game.