Arduino

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Keyboard

## Keyboard.releaseAll()

#### Description

Lets go of all keys currently pressed. See Keyboard.press() for additional information.

#### Syntax

Keyboard.releaseAll()

#### Parameters

None

#### Returns

int : the number of keys released

#### Example

// use this option for OSX:
char ctrlKey = KEY_LEFT_GUI;
// use this option for Windows and Linux:
// char ctrlKey = KEY_LEFT_CTRL;
void setup() {
// make pin 2 an input and turn on the
// pullup resistor so it goes high unless
// connected to ground:
pinMode(2, INPUT_PULLUP);
// initialize control over the keyboard:
Keyboard.begin();
}
void loop() {
while (digitalRead(2) == HIGH) {
// do nothing until pin 2 goes low
delay(500);
}
delay(1000);
// new document:
Keyboard.press(ctrlKey);
Keyboard.press('n');
delay(100);
Keyboard.releaseAll();
// wait for new window to open:
delay(1000);
}
[Get Code]

#### See Also

- Keyboard.begin()
- Keyboard.end()
- Keyboard.press()
- Keyboard.print()
- Keyboard.println()
- Keyboard.release()
- Keyboard.write()
- Keyboard Modifiers

Reference Home

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The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

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