VB 2010与GamePad的直接输入

Question

我有一个表单，上面有两个标签，第一个标签显示USB游戏板的名称(一旦找到)，第二个我想要显示按下的按钮，这是到目前为止我所拥有的：

 Imports Microsoft.DirectX.DirectInput

Public Class Form1
Public _device As Device
Public _state As JoystickState
Public arm As Boolean = True


Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

End Sub

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
    Dim gameControllerList As DeviceList
    gameControllerList = Manager.GetDevices(DeviceClass.GameControl, EnumDevicesFlags.AttachedOnly)

    If (gameControllerList.Count > 0) Then

        Dim deviceInstance As DeviceInstance
        label.Text = "Found"
        For Each deviceInstance In gameControllerList
            _device = New Device(deviceInstance.InstanceGuid)
            label.Text = deviceInstance.InstanceName
            _device.SetDataFormat(DeviceDataFormat.Joystick)
            Exit For
        Next
    Else
        label.Text = "not found"
    End If
    output.Clear()
    _device.Acquire()

    Call Poll()
End Sub


Public Sub Poll()
    Dim buttons() As Byte
    Dim i As Integer = 0
    _device.Poll()
    _state = _device.CurrentJoystickState
    buttons = _state.GetButtons()
    Dim word As String
    word = BitConverter.ToString(buttons)
    output.AppendText(word)

End Sub

结束类

我看到的所有输出都是0，这意味着没有检测到按下键盘上的按钮

有人知道我如何解决这个问题吗？

Answer 1

有趣的是，它完全像错误所说的那样:在开始轮询设备之前，您需要获取设备。

_device.Acquire();

请注意，这只会在实际的轮询函数之前发生一次。