Sierra Wireless Writing an embedded application loader Instrukcja Użytkownika Pobierz pdf (Strona 86)

GHI Electronics,LLC Embedded Master User Manual

Hardware and Software Library

Buttons

Joysticks can have many buttons and they are mapped to index '0', to 'number to keys –

1'. The buttons are ordered in their significance. The most significant is button index 0.

At any time, the user can check the status of a button using:

Joystick.GetButtonState(0); // state of the first button

Joystick.GetButtonState(1); // state of the second button

Events

Different events are available when a button is pressed or when a movement has

occurred. The events associated with a button contain EventArgs that hold the index of the

button associated with the event.

Example

Initialization of a joystick:

// *joystick* is connected and *device* refers to the system device, joystick.

Joystick joystick = new Joystick(device);

// Event when the joystick is disconnected

joystick.Disconnected += JoystickDisconnected;

// Set Cursor bounds

joystick.SetCursorBounds(0, screen.Width, 0, screen.Height );

// Event when a X-Y movement has occured

joystick.JoystickXYMove += JoystickMoved;

// Event when a button is preseed

joystick.JoystickButtonDown += JoystickButtonPressed;

Handling Events:

public static void JoystickMoved(Joystick sender, JoystickEventArgs e)

{

// joystick.Cursor holds the position

}

public static void JoystickButtonPressed(Joystick sender, JoystickEventArgs e)

{

e.ChangedButton; // holds the changed button

}

Reference

GHIElectronics.System.SystemDevices.Joystick

GHIElectronics.System.SystemDevices.JoystickButtonState

GHIElectronics.System.SystemDevices.JoystickCursor

GHIElectronics.System.SystemDevices.JoystickEventHandler

GHIElectronics.System.SystemDevices.JoystickEventArgs

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Sierra Wireless Writing an embedded application loader Instrukcja Użytkownika Strona 86