DOSBox

Language keys

Deactivate dual layouts

Left Alt + ↑   Left Shift

All hotkeys for DOSBox

General
Switch to full-screen (and back)

Alt + ⤶ Enter

General
(ALT-F16 on OS X) Pause emulation

Alt + Pause

General
Show the keymapper configuration screen

Ctrl + F1

General
Update cached information about mounted drives. Useful if you changed something on a mounted drive outside of DOSBox. Also cycles through disk images mounted using IMGMOUNT

Ctrl + F4

General
Save a screenshot (goes to capture folder)

Ctrl + F5

General
Start/Stop recording of AVI video. NOTE: You may well have some problems with this, please see Recording Video in DOSBox documentation for more information

Ctrl + Alt + F5

General
Start/Stop recording sound output to a wave file (goes to capture folder)

Ctrl + F6

General
Start/Stop recording of OPL commands

Ctrl + Alt + F7

General
Start/Stop the recording of raw MIDI commands

Ctrl + Alt + F8

General
Decrease frameskip

Ctrl + F7

General
Increase frameskip

Ctrl + F8

General
Kill (close) DOSBox

Ctrl + F9

General
Capture/Release the mouse (if you need to use the mouse within DOSBox)

Ctrl + F10

General
Decrease DOSBox cycles (slows down the emulation)

Ctrl + F11

General
Increase DOSBox cycles (speeds up the emulation)

Ctrl + F12

General
Unlock speed (turbo button)

Alt + F12

Language keys
Switch between foreign layout and US layout

Ctrl + Alt + F2

Language keys
Activate dual layouts (for some keyboards, e.g. GK codepage 869 and RU codepage 808)

Left Alt + ↑   Right Shift

Language keys
Deactivate dual layouts

Left Alt + ↑   Left Shift

Similar combinations for other applications