/// <summary>
/// 定时器的回调方法
/// </summary>
/// <param name="state"></param>
private void OnTimerCallback(object state)
{
JoystickAPI.JOYINFOEX infoEx = new JoystickAPI.JOYINFOEX();
infoEx.dwSize = Marshal.SizeOf(typeof(JoystickAPI.JOYINFOEX));
infoEx.dwFlags = (int)(JoystickAPI.JOY_RETURNBUTTONS | JoystickAPI.JOY_RETURNPOV);
int result = JoystickAPI.joyGetPosEx(this.Id, ref infoEx);
if (result == JoystickAPI.JOYERR_NOERROR)
{
JoystickButtons buttons = GetButtons(infoEx.dwButtons);
GetXYZButtons(infoEx.dwXpos, infoEx.dwYpos, infoEx.dwZpos, ref buttons);
GetPOVButtons(infoEx.dwPOV, ref buttons);
if (PreviousButtons != buttons && PreviousButtons != JoystickButtons.None)
{
//按钮状态有更改,则发出ButtonUp事件
//取得前一次按下的按钮与本次按下的按钮的差(即不再处于按下状态的按钮)
JoystickButtons b = (JoystickButtons)(PreviousButtons - (PreviousButtons & buttons));
if (b != JoystickButtons.None)
{
this.OnButtonUp(new JoystickEventArgs(this.Id, b));
//记录还处于按下状态的按钮
PreviousButtons = PreviousButtons & buttons;
}
}
if (buttons != JoystickButtons.None)
{
//本次有按下按钮
//取得当前按下的按钮与前一次按下的按钮的差(即本次是新按下的按钮)
JoystickButtons b = (JoystickButtons)(buttons - (PreviousButtons & buttons));
if (b != PreviousButtons && b != JoystickButtons.None)
{
this.OnButtonDown(new JoystickEventArgs(this.Id, b));
this.OnClick(new JoystickEventArgs(this.Id, b));
//记录当前处于按下状态的按钮
PreviousButtons = buttons;
}
}
}
else
{
//其它值无法工作.则停止获取
//this.ReleaseCapture();
}
}
/// <summary>
/// 根据游戏手柄的Id实例化
/// </summary>
/// <param name="joystickId"></param>
private Joystick_V(int joystickId)
{
this.Id = joystickId;
this.JoystickCAPS = new JoystickAPI.JOYCAPS();
//取得游戏手柄的参数信息
if (JoystickAPI.joyGetDevCaps(joystickId, ref this.JoystickCAPS, Marshal.SizeOf(typeof(JoystickAPI.JOYCAPS)))
== JoystickAPI.JOYERR_NOERROR)
{
this.IsConnected = true;
this.Name = this.JoystickCAPS.szPname;
}
else
{
this.IsConnected = false;
}
}