GpioPin.ValueChanged Event

Definition

Namespace:

Windows.Devices.Gpio

Occurs when the value of the general-purpose I/O (GPIO) pin changes, either because of an external stimulus when the pin is configured as an input, or when a value is written to the pin when the pin is configured as an output.

// Register
event_token ValueChanged(TypedEventHandler<GpioPin, GpioPinValueChangedEventArgs const&> const& handler) const;

// Revoke with event_token
void ValueChanged(event_token const* cookie) const;

// Revoke with event_revoker
GpioPin::ValueChanged_revoker ValueChanged(auto_revoke_t, TypedEventHandler<GpioPin, GpioPinValueChangedEventArgs const&> const& handler) const;

public event TypedEventHandler<GpioPin,GpioPinValueChangedEventArgs> ValueChanged;

function onValueChanged(eventArgs) { /* Your code */ }
gpioPin.addEventListener("valuechanged", onValueChanged);
gpioPin.removeEventListener("valuechanged", onValueChanged);
- or -
gpioPin.onvaluechanged = onValueChanged;

Public Custom Event ValueChanged As TypedEventHandler(Of GpioPin, GpioPinValueChangedEventArgs) 

Event Type

TypedEventHandler<GpioPin,GpioPinValueChangedEventArgs>

Windows requirements

App capabilities

lowLevel

See also

• GpioPinValueChangedEventArgs