sl@0: using Microsoft.Win32.SafeHandles; 
sl@0: using System;
sl@0: using System.Runtime.InteropServices; 
sl@0: 
sl@0: namespace GenericHid
sl@0: {    
sl@0: 	/// <summary>
sl@0: 	/// API declarations for HID communications.
sl@0: 	/// </summary>
sl@0:     internal sealed partial class Hid  
sl@0:     {
sl@0: 		internal static class NativeMethods
sl@0: 		{
sl@0: 			//  from hidpi.h
sl@0: 			//  Typedef enum defines a set of integer constants for HidP_Report_Type
sl@0: 
sl@0: 			internal const Int16 HidP_Input = 0;
sl@0: 			internal const Int16 HidP_Output = 1;
sl@0: 			internal const Int16 HidP_Feature = 2;
sl@0: 
sl@0: 			[StructLayout(LayoutKind.Sequential)]
sl@0: 			internal struct HIDD_ATTRIBUTES
sl@0: 			{
sl@0: 				internal Int32 Size;
sl@0: 				internal UInt16 VendorID;
sl@0: 				internal UInt16 ProductID;
sl@0: 				internal UInt16 VersionNumber;
sl@0: 			}
sl@0: 
sl@0: 			internal struct HIDP_CAPS
sl@0: 			{
sl@0: 				internal Int16 Usage;
sl@0: 				internal Int16 UsagePage;
sl@0: 				internal Int16 InputReportByteLength;
sl@0: 				internal Int16 OutputReportByteLength;
sl@0: 				internal Int16 FeatureReportByteLength;
sl@0: 				[MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] internal Int16[] Reserved;
sl@0: 				internal Int16 NumberLinkCollectionNodes;
sl@0: 				internal Int16 NumberInputButtonCaps;
sl@0: 				internal Int16 NumberInputValueCaps;
sl@0: 				internal Int16 NumberInputDataIndices;
sl@0: 				internal Int16 NumberOutputButtonCaps;
sl@0: 				internal Int16 NumberOutputValueCaps;
sl@0: 				internal Int16 NumberOutputDataIndices;
sl@0: 				internal Int16 NumberFeatureButtonCaps;
sl@0: 				internal Int16 NumberFeatureValueCaps;
sl@0: 				internal Int16 NumberFeatureDataIndices;
sl@0: 			}
sl@0: 
sl@0: 			//  If IsRange is false, UsageMin is the Usage and UsageMax is unused.
sl@0: 			//  If IsStringRange is false, StringMin is the String index and StringMax is unused.
sl@0: 			//  If IsDesignatorRange is false, DesignatorMin is the designator index and DesignatorMax is unused.
sl@0: 
sl@0: 			internal struct HidP_Value_Caps
sl@0: 			{
sl@0: 				internal Int16 UsagePage;
sl@0: 				internal Byte ReportID;
sl@0: 				internal Int32 IsAlias;
sl@0: 				internal Int16 BitField;
sl@0: 				internal Int16 LinkCollection;
sl@0: 				internal Int16 LinkUsage;
sl@0: 				internal Int16 LinkUsagePage;
sl@0: 				internal Int32 IsRange;
sl@0: 				internal Int32 IsStringRange;
sl@0: 				internal Int32 IsDesignatorRange;
sl@0: 				internal Int32 IsAbsolute;
sl@0: 				internal Int32 HasNull;
sl@0: 				internal Byte Reserved;
sl@0: 				internal Int16 BitSize;
sl@0: 				internal Int16 ReportCount;
sl@0: 				internal Int16 Reserved2;
sl@0: 				internal Int16 Reserved3;
sl@0: 				internal Int16 Reserved4;
sl@0: 				internal Int16 Reserved5;
sl@0: 				internal Int16 Reserved6;
sl@0: 				internal Int32 LogicalMin;
sl@0: 				internal Int32 LogicalMax;
sl@0: 				internal Int32 PhysicalMin;
sl@0: 				internal Int32 PhysicalMax;
sl@0: 				internal Int16 UsageMin;
sl@0: 				internal Int16 UsageMax;
sl@0: 				internal Int16 StringMin;
sl@0: 				internal Int16 StringMax;
sl@0: 				internal Int16 DesignatorMin;
sl@0: 				internal Int16 DesignatorMax;
sl@0: 				internal Int16 DataIndexMin;
sl@0: 				internal Int16 DataIndexMax;
sl@0: 			}
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_FlushQueue(SafeFileHandle HidDeviceObject);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_FreePreparsedData(IntPtr PreparsedData);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_GetAttributes(SafeFileHandle HidDeviceObject, ref HIDD_ATTRIBUTES Attributes);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_GetFeature(SafeFileHandle HidDeviceObject, Byte[] lpReportBuffer,
sl@0: 			                                               Int32 ReportBufferLength);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_GetInputReport(SafeFileHandle HidDeviceObject, Byte[] lpReportBuffer,
sl@0: 			                                                   Int32 ReportBufferLength);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern void HidD_GetHidGuid(ref Guid HidGuid);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_GetNumInputBuffers(SafeFileHandle HidDeviceObject, ref Int32 NumberBuffers);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_GetPreparsedData(SafeFileHandle HidDeviceObject, ref IntPtr PreparsedData);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_SetFeature(SafeFileHandle HidDeviceObject, Byte[] lpReportBuffer,
sl@0: 			                                               Int32 ReportBufferLength);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_SetNumInputBuffers(SafeFileHandle HidDeviceObject, Int32 NumberBuffers);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Boolean HidD_SetOutputReport(SafeFileHandle HidDeviceObject, Byte[] lpReportBuffer,
sl@0: 			                                                    Int32 ReportBufferLength);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Int32 HidP_GetCaps(IntPtr PreparsedData, ref HIDP_CAPS Capabilities);
sl@0: 
sl@0: 			[DllImport("hid.dll", SetLastError = true)]
sl@0: 			internal static extern Int32 HidP_GetValueCaps(Int32 ReportType, Byte[] ValueCaps, ref Int32 ValueCapsLength,
sl@0: 			                                               IntPtr PreparsedData);
sl@0: 		}
sl@0:     } 
sl@0: }