Device Arrive/Remove Message Repeated

I'm writing a program that talks to a device with a Cypress USB chip. I'm using the Cypress driver and API. The API registers a windows message to alert my program whenever the device is connected or disconnected. The code runs correctly, but every time I connect to disconnect the device, the number of times the code gets called increases. For example, on the first connect, the code gets run once. On the second connect, the code gets run, say, 5 times. On the third connect, the code might get run 20 times. If I stop the program and re-run it, it starts off at one exectuion, and ramps up. Any ideas why this is? I have never used windows messages before, so I might be doing something wrong. Thanks.


The code:

protected:[System::Security::Permissions::PermissionSet(System::Security::Permissions::SecurityAction::Demand, Name="FullTrust")] void WndProc(Message* m)
{
        // Listen for operating system messages.
        switch (m->Msg)
       {
                case WM_DEVICECHANGE:
            if(m->WParam == DBT_DEVICEREMOVECOMPLETE)
            {
                           //MessageBox(NULL,"Device Removed","Devices",MB_OK|MB_ICONINFORMATION);
                  init_device(false);
            }
            else if(m->WParam == DBT_DEVICEARRIVAL)
            {
                  //MessageBox(NULL,"Device Arrived","Devices",MB_OK|MB_ICONINFORMATION);
                  init_device(false);
            }
      break;
      default:
             Form::WndProc(m);
      break;
         }
       
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