public static Capabilities? Get(IntPtr handle)
{
var capabilities = new Capabilities();
var preparsedDataPointer = IntPtr.Zero;
if (HidD_GetPreparsedData(handle, ref preparsedDataPointer))
{
HidP_GetCaps(preparsedDataPointer, ref capabilities);
HidD_FreePreparsedData(preparsedDataPointer);
return capabilities;
}
else
return null;
}
internal HidDeviceCapabilities(Capabilities 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;
}
static internal extern int HidP_GetCaps(IntPtr preparsedData, ref Capabilities capabilities);