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我有一个带有 2 个标签的表单，第一个标签显示 USB 游戏手柄名称（一旦找到），第二个我想显示按下的按钮，这是我目前所拥有的：

 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

我看到的只是输出上的 0，这意味着键盘上按下的按钮未被检测到

有谁知道我该如何解决这个问题？

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1 回答 1

2

有趣的是，它就像错误所说的那样：您需要在开始轮询之前获取设备。

_device.Acquire();

请注意，这仅在实际轮询函数之前发生一次。

于 2011-07-26T14:40:09.923 回答