public static void Shutdown()
{
if (_dllHandle != IntPtr.Zero)
{
_shutdown?.Invoke();
_shutdown = null;
_setTargetDevice = null;
_setLightingForScanCode = null;
_setLightingForKeyName = null;
FreeLibrary(_dllHandle);
_dllHandle = IntPtr.Zero;
}
}
public static bool Init()
{
// Handle the case when the library is already loaded.
if (_dllHandle != IntPtr.Zero)
{
return(true);
}
_dllHandle = LoadLibraryEx(DllPath, IntPtr.Zero, 0);
if (_dllHandle == IntPtr.Zero)
{
return(false);
}
var initAddress = GetProcAddress(_dllHandle, "LogiLedInit");
if (initAddress == IntPtr.Zero)
{
Shutdown();
return(false);
}
var success =
((LogiLedInit)Marshal.GetDelegateForFunctionPointer(initAddress, typeof(LogiLedInit)))();
if (!success)
{
Shutdown();
}
var shutdownAddress = GetProcAddress(_dllHandle, "LogiLedShutdown");
var setTargetDeviceAddress = GetProcAddress(_dllHandle, "LogiLedSetTargetDevice");
var setLightingForKeyWithScanCodeAddress =
GetProcAddress(_dllHandle, "LogiLedSetLightingForKeyWithScanCode");
var setLightingForKeyWithKeyNameAddress =
GetProcAddress(_dllHandle, "LogiLedSetLightingForKeyWithKeyName");
foreach (var address in new[]
{ shutdownAddress, setTargetDeviceAddress, setLightingForKeyWithScanCodeAddress, setLightingForKeyWithKeyNameAddress })
{
if (address == IntPtr.Zero)
{
Shutdown();
return(false);
}
}
_shutdown =
(LogiLedShutdown)Marshal.GetDelegateForFunctionPointer(shutdownAddress,
typeof(LogiLedShutdown));
_setTargetDevice =
(LogiLedSetTargetDevice)Marshal.GetDelegateForFunctionPointer(setTargetDeviceAddress,
typeof(LogiLedSetTargetDevice));
_setLightingForScanCode =
(LogiLedSetLightingForKeyWithScanCode)Marshal.GetDelegateForFunctionPointer(
setLightingForKeyWithScanCodeAddress,
typeof(LogiLedSetLightingForKeyWithScanCode));
_setLightingForKeyName =
(LogiLedSetLightingForKeyWithKeyName)Marshal.GetDelegateForFunctionPointer(
setLightingForKeyWithKeyNameAddress,
typeof(LogiLedSetLightingForKeyWithKeyName));
foreach (var methodDelegate in new object[]
{ _shutdown, _setTargetDevice, _setLightingForScanCode })
{
if (methodDelegate == null)
{
Shutdown();
return(false);
}
}
return(success);
}