VC Thread的格式

 HANDLE hThread_Read;
 DWORD dwThreadID;

 HANDLE hdev;
DWORD WINAPI ThreadExecute_ReadFromEP1(PVOID pContext);
 hdev = INVALID_HANDLE_VALUE;
 hThread_Read = (HANDLE)CreateThread(
          NULL,
          0,
          ThreadExecute_ReadFromEP1,
          this,
          0,
          &dwThreadID);

 if(hThread_Read == NULL)
 {
  MessageBox("Create thread failed!");
 }


LRESULT CEzUSBDlgDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
 // TODO: Add your specialized code here and/or call the base class
 if(message == WM_DEVICECHANGE)
 {
  if(wParam == DBT_DEVNODES_CHANGED)
  {
   OnCloseDevice();
  }  
 }
 
 return CDialog::WindowProc(message, wParam, lParam);
}
void CEzUSBDlgDlg::OnClose() 
{
 // TODO: Add your message handler code here and/or call default

 ::TerminateThread(hThread_Read,0);

 OnCloseDevice();

 if(hThread_Read != NULL)
 {
  CloseHandle(hThread_Read);
  hThread_Read = NULL;
 }

 CDialog::OnClose();
}

void CEzUSBDlgDlg::OnCloseDevice() 
{
 // TODO: Add your control notification handler code here

 if(hdev == INVALID_HANDLE_VALUE)
 {
  return;
 }

 CloseHandle(hdev);
 hdev = INVALID_HANDLE_VALUE;
   
 m_Open.EnableWindow(TRUE);
 m_Close.EnableWindow(FALSE);
 SetDlgItemText(IDC_NAME,"");
}

void CEzUSBDlgDlg::OnOpenDevice() 
{
 // TODO: Add your control notification handler code here

 if(hdev != INVALID_HANDLE_VALUE)
 {
  return;
 }

 hdev = OpenUSBDevice();

 if(hdev != INVALID_HANDLE_VALUE)
 {
  m_Open.EnableWindow(FALSE);
  m_Close.EnableWindow(TRUE);
  
  SetDlgItemText(IDC_NAME,GetUSBDeviceName());
 }
 else
 {
  MessageBox("Open USB device failed!");
 }
}

void CEzUSBDlgDlg::OnRead() 
{
 // TODO: Add your control notification handler code here
 if(hdev == INVALID_HANDLE_VALUE)
 {
  return;
 }

 OVERLAPPED olIoControl;
 memset(&olIoControl, 0, sizeof(OVERLAPPED));

 CHAR buff[64] = {0};
 DWORD dwBytesReturned;

 if( (!ReadFile(hdev, buff, 64, &dwBytesReturned, &olIoControl)) &&
  (GetLastError()!=ERROR_IO_PENDING))
 {
 // MessageBox("ReadFile() Failed!!!");
 }
 else
 {
  UINT m = 0;

  for(DWORD i=0; i<dwBytesReturned/2; i++)
  {    
   m = (BYTE)buff[i*2+1];
   m <<= 8;
   m += (BYTE)buff[i*2];

   SetDlgItemInt(UID[i], m);
  }
 }
}

DWORD WINAPI ThreadExecute_ReadFromEP1(PVOID pContext)
{
 CEzUSBDlgDlg* pADS = (CEzUSBDlgDlg *)pContext;

 while(TRUE)
 {
  pADS->OnRead();

  Sleep(1);
 }

 return 0;
}

一个硬件USB多线程代码实例

 

原文链接： http://blog.csdn.net/augusdi/article/details/4266917