private static HidDeviceCapabilities GetDeviceCapabilities(IntPtr hidHandle)
{
NativeMethods.HIDP_CAPS capabilities = default(NativeMethods.HIDP_CAPS);
IntPtr preparsedData = default(IntPtr);
if (NativeMethods.HidD_GetPreparsedData(hidHandle, ref preparsedData))
{
NativeMethods.HidP_GetCaps(preparsedData, ref capabilities);
NativeMethods.HidD_FreePreparsedData(preparsedData);
}
return(new HidDeviceCapabilities(capabilities));
}
internal HidDeviceCapabilities(NativeMethods.HIDP_CAPS capabilities)
{
Usage = capabilities.Usage;
UsagePage = capabilities.UsagePage;
InputReportByteLength = capabilities.InputReportByteLength;
OutputReportByteLength = capabilities.OutputReportByteLength;
FeatureReportByteLength = capabilities.FeatureReportByteLength;
Reserved = capabilities.Reserved;
NumberLinkCollectionNodes = capabilities.NumberLinkCollectionNodes;
NumberInputButtonCaps = capabilities.NumberInputButtonCaps;
NumberInputValueCaps = capabilities.NumberInputValueCaps;
NumberInputDataIndices = capabilities.NumberInputDataIndices;
NumberOutputButtonCaps = capabilities.NumberOutputButtonCaps;
NumberOutputValueCaps = capabilities.NumberOutputValueCaps;
NumberOutputDataIndices = capabilities.NumberOutputDataIndices;
NumberFeatureButtonCaps = capabilities.NumberFeatureButtonCaps;
NumberFeatureValueCaps = capabilities.NumberFeatureValueCaps;
NumberFeatureDataIndices = capabilities.NumberFeatureDataIndices;
}
