public static void UseLibrary(string fileName)
{
_dllName = fileName;
if (_handles.ContainsKey(_dllName))
{
_dllHandle = _handles[_dllName];
}
else
{
_dllHandle = LoadLibrary(_dllName);
}
if (_dllHandle == IntPtr.Zero)
{
throw new Exception("Unable to load ExtIO library");
}
_initHW = null;
_openHW = null;
_startHW = null;
_stopHW = null;
_closeHW = null;
_setHWLO = null;
_getHWLO = null;
_getHWSR = null;
_getStatus = null;
_showGUI = null;
_hideGUI = null;
_setCallback = null;
IntPtr pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "InitHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_initHW = (InitHWDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(InitHWDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "OpenHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_openHW = (OpenHWDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(OpenHWDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "StartHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_startHW = (StartHWDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(StartHWDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "StopHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_stopHW = (StopHWDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(StopHWDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "CloseHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_closeHW = (CloseHWDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(CloseHWDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "SetCallback");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_setCallback = (SetCallbackDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(SetCallbackDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "SetHWLO");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_setHWLO = (SetHWLODelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(SetHWLODelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "GetHWLO");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_getHWLO = (GetHWLODelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetHWLODelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "GetHWSR");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_getHWSR = (GetHWSRDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetHWSRDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "GetStatus");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_getStatus = (GetStatusDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetStatusDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "ShowGUI");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_showGUI = (ShowGUIDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(ShowGUIDelegate));
}
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "HideGUI");
if (pAddressOfFunctionToCall != IntPtr.Zero)
{
_hideGUI = (HideGUIDelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(HideGUIDelegate));
}
if (_initHW == null || _openHW == null || _startHW == null || _setHWLO == null ||
_getStatus == null || _setCallback == null || _stopHW == null || _closeHW == null)
{
//FreeLibrary(_dllHandle);
_dllHandle = IntPtr.Zero;
throw new ApplicationException("ExtIO DLL is not valid");
}
var name = new StringBuilder(256);
var model = new StringBuilder(256);
int type;
var result = _initHW(name, model, out type);
_name = name.ToString();
_model = model.ToString();
if (result < 1)
{
//FreeLibrary(_dllHandle);
_dllHandle = IntPtr.Zero;
throw new ApplicationException("InitHW() returned " + result);
}
_hwType = (HWTypes)type;
/* Give the library the managed callback address */
_setCallback(_callbackInst);
}
public static void UseLibrary(string fileName)
{
_dllName = fileName;
if (_handles.ContainsKey(_dllName))
{
_dllHandle = _handles[_dllName];
}
else
{
_dllHandle = LoadLibrary(_dllName);
}
if (_dllHandle == IntPtr.Zero)
throw new Exception("Unable to load ExtIO library");
_initHW = null;
_openHW = null;
_startHW = null;
_stopHW = null;
_closeHW = null;
_setHWLO = null;
_getHWLO = null;
_getHWSR = null;
_getStatus = null;
_showGUI = null;
_hideGUI = null;
_setCallback = null;
IntPtr pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "InitHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_initHW = (InitHWDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(InitHWDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "OpenHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_openHW = (OpenHWDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(OpenHWDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "StartHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_startHW = (StartHWDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(StartHWDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "StopHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_stopHW = (StopHWDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(StopHWDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "CloseHW");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_closeHW = (CloseHWDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(CloseHWDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "SetCallback");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_setCallback = (SetCallbackDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(SetCallbackDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "SetHWLO");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_setHWLO = (SetHWLODelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(SetHWLODelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "GetHWLO");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_getHWLO = (GetHWLODelegate)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetHWLODelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "GetHWSR");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_getHWSR = (GetHWSRDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetHWSRDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "GetStatus");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_getStatus = (GetStatusDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GetStatusDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "ShowGUI");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_showGUI = (ShowGUIDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(ShowGUIDelegate));
pAddressOfFunctionToCall = GetProcAddress(_dllHandle, "HideGUI");
if (pAddressOfFunctionToCall != IntPtr.Zero)
_hideGUI = (HideGUIDelegate) Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(HideGUIDelegate));
if (_initHW == null || _openHW == null || _startHW == null || _setHWLO == null ||
_getStatus == null || _setCallback == null || _stopHW == null || _closeHW == null)
{
//FreeLibrary(_dllHandle);
_dllHandle = IntPtr.Zero;
throw new ApplicationException("ExtIO DLL is not valid");
}
var name = new StringBuilder(256);
var model = new StringBuilder(256);
int type;
var result = _initHW(name, model, out type);
_name = name.ToString();
_model = model.ToString();
if (result < 1)
{
//FreeLibrary(_dllHandle);
_dllHandle = IntPtr.Zero;
throw new ApplicationException("InitHW() returned " + result);
}
_hwType = (HWTypes) type;
/* Give the library the managed callback address */
_setCallback(_callbackInst);
}
