Synaptics SDK 找不到设备

Question

我正在尝试使用 Synaptics SDK 在 Synaptics 触摸板上获取设备句柄，特别是使用 SYNCTRLLib 中的方法。但是，SYNCTRL方法找不到，返回-1.

Syn.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using SYNCOMLib;
using SYNCTRLLib;

namespace TP_Test1
{
    class Syn
    {
        SynAPICtrl SynTP_API = new SynAPICtrl();
        SynDeviceCtrl SynTP_Dev = new SynDeviceCtrl();
        SynPacketCtrl SynTP_Pack = new SynPacketCtrl();
        int DeviceHandle;

        //Constructor
        public Syn ()
        {
            SynTP_API.Initialize();
            SynTP_API.Activate();

            //DeviceHandle == -1 ? Can't find device?
            DeviceHandle = SynTP_API.FindDevice(new SynConnectionType(), new SynDeviceType(), 0);
            //Below line causing Unhandled Exception
            SynTP_Dev.Select(DeviceHandle);
            SynTP_Dev.Activate();
            SynTP_Dev.OnPacket += SynTP_Dev_OnPacket;
        }

        public void SynTP_Dev_OnPacket()
        {
                Console.WriteLine(SynTP_Pack.FingerState);
                Console.WriteLine(SynTP_Pack.X);
                Console.WriteLine(SynTP_Pack.Y);
        }
    }
}

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using SYNCOMLib;
using SYNCTRLLib;

namespace TP_Test1
{
    class Program
    {
        static void Main(string[] args)
        {
            Syn mySyn = new Syn();
            mySyn.SynTP_Dev_OnPacket();
        }
    }
}

Answer 1

我看到您正在使用 Synaptics SDK 的 C# 包装器。尽管 CPP 代码对您来说可能并不简单，但您可能想要查看文件 Samples/ComTest.cpp。它包含一些用于查找设备的示例逻辑，更具体地说是在第 66-76 行：

  // Find a device, preferentially a TouchPad or Styk.
  ISynDevice *pDevice = 0;
  long lHandle = -1;
  if ((pAPI->FindDevice(SE_ConnectionAny, SE_DeviceTouchPad, &lHandle) &&
       pAPI->FindDevice(SE_ConnectionAny, SE_DeviceStyk, &lHandle) &&
       pAPI->FindDevice(SE_ConnectionAny, SE_DeviceAny, &lHandle)) || 
      pAPI->CreateDevice(lHandle, &pDevice))
  {
    printf("Unable to find a Synaptics Device.\n");
    exit(-1);
  }

此外，请确保您已注册 dlls。根据 ReadSynSDK.txt 文件：

For certain purposes it may be necessary to register the dlls that are provided with the SDK. This can be done with the windows regsvr32 utility.

Synaptics SDK 找不到设备

Synaptics SDK can't find device

c#

touchpad