3 All keycodes within quantum are numbers between `0x0000` and `0xFFFF`. Within your `keymap.c` it may look like you have functions and other special cases, but ultimately the C preprocessor will translate those into a single 4 byte integer. QMK has reserved `0x0000` through `0x00FF` for standard keycodes. These are keycodes such as `KC_A`, `KC_1`, and `KC_LCTL`, which are basic keys defined in the USB HID specification.
5 On this page we have documented keycodes between `0x00FF` and `0xFFFF` which are used to implement advanced quantum features. If you define your own custom keycodes they will be put into this range as well. Keycodes above `0x00FF` may not be used with any of the mod/layer-tap keys listed
11 |`RESET`|Put the keyboard into DFU mode for flashing|
12 |`DEBUG`|Toggles debug mode|
13 |`KC_GESC`/`GRAVE_ESC`|Acts as escape when pressed normally but when pressed with Shift or GUI will send a `~`|
14 |`KC_LSPO`|Left shift when held, open paranthesis when tapped|
15 |`KC_RSPC`|Right shift when held, close paranthesis when tapped|
16 |`KC_LEAD`|The [leader key](leader_key.md)|
17 |`FUNC(n)`/`F(n)`|Call `fn_action(n)`|
18 |`M(n)`|to call macro n|
19 |`MACROTAP(n)`|to macro-tap n idk FIXME|
20 |`KC_LOCK`|The [lock key](key_lock.md)|
24 Shortcuts for bootmagic options (these work even when bootmagic is off.)
28 |`MAGIC_SWAP_CONTROL_CAPSLOCK`|Swap Capslock and Left Control|
29 |`MAGIC_CAPSLOCK_TO_CONTROL`|Treat Capslock like a Control Key|
30 |`MAGIC_SWAP_LALT_LGUI`|Swap the left Alt and GUI keys|
31 |`MAGIC_SWAP_RALT_RGUI`|Swap the right Alt and GUI keys|
32 |`MAGIC_NO_GUI`|Disable the GUI key|
33 |`MAGIC_SWAP_GRAVE_ESC`|Swap the Grave and Esc key.|
34 |`MAGIC_SWAP_BACKSLASH_BACKSPACE`|Swap backslack and backspace|
35 |`MAGIC_HOST_NKRO`|Force NKRO on|
36 |`MAGIC_SWAP_ALT_GUI`/`AG_SWAP`|Swap Alt and Gui on both sides|
37 |`MAGIC_UNSWAP_CONTROL_CAPSLOCK`|Disable the Control/Capslock swap|
38 |`MAGIC_UNCAPSLOCK_TO_CONTROL`|Disable treating Capslock like Control |
39 |`MAGIC_UNSWAP_LALT_LGUI`|Disable Left Alt and GUI switching|
40 |`MAGIC_UNSWAP_RALT_RGUI`|Disable Right Alt and GUI switching|
41 |`MAGIC_UNNO_GUI`|Enable the GUI key |
42 |`MAGIC_UNSWAP_GRAVE_ESC`|Disable the Grave/Esc swap |
43 |`MAGIC_UNSWAP_BACKSLASH_BACKSPACE`|Disable the backslash/backspace swap|
44 |`MAGIC_UNHOST_NKRO`|Force NKRO off|
45 |`MAGIC_UNSWAP_ALT_GUI`/`AG_NORM`|Disable the Alt/GUI switching|
46 |`MAGIC_TOGGLE_NKRO`|Turn NKRO on or off|
48 <!-- FIXME: this formatting needs work
58 #ifdef FAUXCLICKY_ENABLE
64 // Music mode on/off/toggle
69 // Music voice iterate
77 #if !MIDI_ENABLE_STRICT || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
78 MI_ON, // send midi notes when music mode is enabled
79 MI_OFF, // don't send midi notes when music mode is enabled
103 MIDI_TONE_KEYCODE_OCTAVES > 1
126 MIDI_OCTAVE_MIN = MI_OCT_N2,
127 MIDI_OCTAVE_MAX = MI_OCT_7,
128 MI_OCTD, // octave down
129 MI_OCTU, // octave up
133 MIDI_TRANSPOSE_MIN = MI_TRNS_N6,
134 MIDI_TRANSPOSE_MAX = MI_TRNS_6,
135 MI_TRNSD, // transpose down
136 MI_TRNSU, // transpose up
139 MIDI_VELOCITY_MIN = MI_VEL_1,
140 MIDI_VELOCITY_MAX = MI_VEL_9,
141 MI_VELD, // velocity down
142 MI_VELU, // velocity up
145 MIDI_CHANNEL_MIN = MI_CH1
146 MIDI_CHANNEL_MAX = MI_CH16,
147 MI_CHD, // previous channel
148 MI_CHU, // next channel
150 MI_ALLOFF, // all notes off
153 MI_PORT, // portamento
154 MI_SOST, // sostenuto
155 MI_SOFT, // soft pedal
158 MI_MOD, // modulation
159 MI_MODSD, // decrease modulation speed
160 MI_MODSU, // increase modulation speed
161 #endif // MIDI_ADVANCED
167 These keycodes control the backlight. Most keyboards use this for single color in-switch lighting.
171 |`BL_x`|Set a specific backlight level between 0-9|
172 |`BL_ON`|An alias for `BL_9`|
173 |`BL_OFF`|An alias for `BL_0`|
174 |`BL_DEC`|Turn the backlight level down by 1|
175 |`BL_INC`|Turn the backlight level up by 1|
176 |`BL_TOGG`|Toggle the backlight on or off|
177 |`BL_STEP`|Step through backlight levels, wrapping around to 0 when you reach the top.|
179 ## RGBLIGHT WS2818 LEDs
181 This controls the `RGBLIGHT` functionality. Most keyboards use WS2812 (and compatible) LEDs for underlight or case lighting.
185 |`RGB_TOG`|toggle on/off|
186 |`RGB_MOD`|cycle through modes|
187 |`RGB_HUI`|hue increase|
188 |`RGB_HUD`|hue decrease|
189 |`RGB_SAI`|saturation increase|
190 |`RGB_SAD`|saturation decrease|
191 |`RGB_VAI`|value increase|
192 |`RGB_VAD`|value decrease|
194 ## Thermal Printer (experimental)
198 |`PRINT_ON`|Start printing everything the user types|
199 |`PRINT_OFF`|Stop printing everything the user types|
201 ## Keyboard output selection
203 This is used when multiple keyboard outputs can be selected. Currently this only allows for switching between USB and Bluetooth on keyboards that support both.
207 |`OUT_AUTO`|auto mode|
209 |`OUT_BT`|bluetooth (when `BLUETOOTH_ENABLE`)|
213 These are special keycodes that simulate pressing several modifiers at once.
217 |`KC_HYPR`|Hold down LCTL + LSFT + LALT + LGUI|
218 |`KC_MEH`|Hold down LCTL + LSFT + LALT|
220 /* FIXME: Should we have these in QMK too?
221 * |`KC_LCAG`|`LCTL` + `LALT` + `LGUI`|
222 * |`KC_ALTG`|`RCTL` + `RALT`|
223 * |`KC_SCMD`/`KC_SWIN`|`LGUI` + `LSFT`|
224 * |`KC_LCA`|`LCTL` + `LALT`|
227 ### Modifiers with keys
231 |`LCTL(kc)`|`LCTL` + `kc`|
232 |`LSFT(kc)`/`S(kc)`|`LSFT` + `kc`|
233 |`LALT(kc)`|`LALT` + `kc`|
234 |`LGUI(kc)`|`LGUI` + `kc`|
235 |`RCTL(kc)`|`RCTL` + `kc`|
236 |`RSFT(kc)`|`RSFT` + `kc`|
237 |`RALT(kc)`|`RALT` + `kc`|
238 |`RGUI(kc)`|`RGUI` + `kc`|
239 |`HYPR(kc)`|`LCTL` + `LSFT` + `LALT` + `LGUI` + `kc`|
240 |`MEH(kc)`|`LCTL` + `LSFT` + `LALT` + `kc`|
241 |`LCAG(kc)`|`LCTL` + `LALT` + `LGUI` + `kc`|
242 |`ALTG(kc)`|`RCTL` + `RALT` + `kc`|
243 |`SCMD(kc)`/`SWIN(kc)`|`LGUI` + `LSFT` + `kc`|
244 |`LCA(kc)`|`LCTL` + `LALT` + `kc`|
248 Most modifiers work by being held down while you push another key. You can use `OSM()` to setup a "One Shot" modifier. When you tap a one shot mod it will remain is a pressed state until you press another key.
250 To specify a your modifier you need to pass the `MOD` form of the key. For example, if you want to setup a One Shot Control you would use `OSM(MOD_LCTL)`.
254 |`OSM(mod)`|use mod for one keypress|
255 |`OSL(layer)`|switch to layer for one keypress|
259 These keycodes will press the mod(s) when held, and the key when tapped. They only work with [basic keycodes](basic_keycodes.md).
263 |`CTL_T(kc)`/`LCTL_T(kc)`|`LCTL` when held, `kc` when tapped|
264 |`RCTL_T(kc)`|`RCTL` when held, `kc` when tapped|
265 |`SFT_T(kc)`/`LSFT_T(kc)`|`LSFT` when held, `kc` when tapped|
266 |`RSFT_T(kc)`|`RSFT` when held, `kc` when tapped|
267 |`ALT_T(kc)`/`LALT_T(kc)`|`LALT` when held, `kc` when tapped|
268 |`RALT_T(kc)`/`ALGR_T(kc)`|`RALT` when held, `kc` when tapped|
269 |`GUI_T(kc)`/`LGUI_T(kc)`|`LGUI` when held, `kc` when tapped|
270 |`RGUI_T(kc)`|`RGUI` when held, `kc` when tapped|
271 |`C_S_T(kc)`|`LCTL` + `LSFT` when held, `kc` when tapped|
272 |`MEH_T(kc)`|`LCTL` + `LSFT` + `LALT` when held, `kc` when tapped|
273 |`LCAG_T(kc)`|`LCTL` + `LALT` + `LGUI` when held, `kc` when tapped|
274 |`RCAG_T(kc)`|`RCTL` + `RALT` + `RGUI` when held, `kc` when tapped|
275 |`ALL_T(kc)`|`LCTL` + `LSFT` + `LALT` + `LGUI` when held, `kc` when tapped [more info](http://brettterpstra.com/2012/12/08/a-useful-caps-lock-key/)|
276 |`SCMD_T(kc)`/`SWIN_T(kc)`|`LGUI` + `LSFT` when held, `kc` when tapped|
277 |`LCA_T(kc)`|`LCTL` + `LALT` when held, `kc` when tapped|
279 ## US ANSI Shifted symbols
281 These keycodes correspond to characters that are "shifted" on a standard US ANSI keyboards. They do not have dedicated keycodes but are instead typed by holding down shift and then sending a keycode.
283 It's important to remember that all of these keycodes send a left shift - this may cause unintended actions if unaccounted for. The short code is preferred in most situations.
285 |Short Name|Long Name|Description|
286 |----------|---------|-----------|
287 |`KC_TILD`|`KC_TILDE`|tilde `~`|
288 |`KC_EXLM`|`KC_EXCLAIM`|exclamation mark `!`|
289 |`KC_AT`||at sign `@`|
290 |`KC_HASH`||hash sign `#`|
291 |`KC_DLR`|`KC_DOLLAR`|dollar sign `$`|
292 |`KC_PERC`|`KC_PERCENT`|percent sign `%`|
293 |`KC_CIRC`|`KC_CIRCUMFLEX`|circumflex `^`|
294 |`KC_AMPR`|`KC_AMPERSAND`|ampersand `&`|
295 |`KC_ASTR`|`KC_ASTERISK`|asterisk `*`|
296 |`KC_LPRN`|`KC_LEFT_PAREN`|left parenthesis `(`|
297 |`KC_RPRN`|`KC_RIGHT_PAREN`|right parenthesis `)`|
298 |`KC_UNDS`|`KC_UNDERSCORE`|underscore `_`|
299 |`KC_PLUS`||plus sign `+`|
300 |`KC_LCBR`|`KC_LEFT_CURLY_BRACE`|left curly brace `{`|
301 |`KC_RCBR`|`KC_RIGHT_CURLY_BRACE`|right curly brace `}`|
302 |`KC_LT`/`KC_LABK`|`KC_LEFT_ANGLE_BRACKET`|left angle bracket `<`|
303 |`KC_GT`/`KC_RABK`|`KC_RIGHT_ANGLE_BRACKET`|right angle bracket `>`|
304 |`KC_COLN`|`KC_COLON`|colon `:`|
305 |`KC_PIPE`||pipe `\|`|
306 |`KC_QUES`|`KC_QUESTION`|question mark `?`|
307 |`KC_DQT`/`KC_DQUO`|`KC_DOUBLE_QUOTE`|double quote `"`|
311 These are keycodes that can be used to change the current layer.
315 |`LT(layer, kc)`|turn on layer (0-15) when held, kc ([basic keycodes](basic_keycodes.md)) when tapped|
316 |`TO(layer)`|turn on layer when depressed|
317 |`MO(layer)`|momentarily turn on layer when depressed (requires `KC_TRNS` on destination layer)|
318 |`DF(layer)`|sets the base (default) layer|
319 |`TG(layer)`|toggle layer on/off|
320 |`TT(layer)`|tap toggle? idk FIXME|
321 |`OSL(layer)`|switch to layer for one keycode|
325 These keycodes can be used in conjuction with the [Unicode](unicode_and_additional_language_support.md) support.
327 |`UNICODE(n)`/`UC(n)`|if `UNICODE_ENABLE`, this will send characters up to `0x7FFF`|
328 |`X(n)`|if `UNICODEMAP_ENABLE`, also sends unicode via a different method|
330 # `SAFE_RANGE`, or safely defining custom keycodes
332 Sometimes you want to define your own custom keycodes to make your keymap easier to read. QMK provides `SAFE_RANGE` to help you do that. `SAFE_RANGE` is the first available keycode in the `0x0000`-`0xFFFF` range and you can use it when creating your own custom keycode enum:
341 You can then use `process_record_user()` to do something with your keycode:
344 bool process_record_user(uint16_t keycode, keyrecord_t *record) {