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Code Issues Releases Wiki Activity

Added DEVPROPTYPE.GetObject extension methods

pull/229/head
dahall 2021-05-02 21:50:37 -06:00
parent a934a84a82
commit ef9ad5c169
1 changed files with 63 additions and 0 deletions
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63
PInvoke/SetupAPI/SetupAPI.cs
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@ -1,4 +1,5 @@
using System;
using System.Linq;
using System.Runtime.InteropServices;
using Vanara.Extensions;
using Vanara.InteropServices;
@ -2688,6 +2689,68 @@ namespace Vanara.PInvoke
SRCLIST_NOSTRIPPLATFORM = 0x00000400,
}
/// <summary>Extracts a value from memory of the type specified.</summary>
/// <param name="pType">Type of the value to extract.</param>
/// <param name="mem">The memory handle holding the value.</param>
/// <returns>An object of the specified type.</returns>
public static object GetObject(this DEVPROPTYPE pType, ISafeMemoryHandle mem) => GetObject(pType, mem.DangerousGetHandle(), mem.Size);
/// <summary>Extracts a value from memory of the type specified.</summary>
/// <param name="pType">Type of the value to extract.</param>
/// <param name="mem">The pointer to the memory holding the value.</param>
/// <param name="memSize">Size of the allocated memory.</param>
/// <returns>An object of the specified type.</returns>
public static object GetObject(this DEVPROPTYPE pType, IntPtr mem, SizeT memSize)
{
switch (pType)
{
case DEVPROPTYPE.DEVPROP_TYPE_EMPTY:
case DEVPROPTYPE.DEVPROP_TYPE_NULL:
return null;
case DEVPROPTYPE.DEVPROP_TYPE_SBYTE:
case DEVPROPTYPE.DEVPROP_TYPE_BYTE:
case DEVPROPTYPE.DEVPROP_TYPE_INT16:
case DEVPROPTYPE.DEVPROP_TYPE_UINT16:
case DEVPROPTYPE.DEVPROP_TYPE_INT32:
case DEVPROPTYPE.DEVPROP_TYPE_UINT32:
case DEVPROPTYPE.DEVPROP_TYPE_INT64:
case DEVPROPTYPE.DEVPROP_TYPE_UINT64:
case DEVPROPTYPE.DEVPROP_TYPE_FLOAT:
case DEVPROPTYPE.DEVPROP_TYPE_DOUBLE:
case DEVPROPTYPE.DEVPROP_TYPE_DECIMAL:
case DEVPROPTYPE.DEVPROP_TYPE_GUID:
case DEVPROPTYPE.DEVPROP_TYPE_FILETIME:
case DEVPROPTYPE.DEVPROP_TYPE_CURRENCY:
case DEVPROPTYPE.DEVPROP_TYPE_DATE:
case DEVPROPTYPE.DEVPROP_TYPE_STRING:
case DEVPROPTYPE.DEVPROP_TYPE_DEVPROPKEY:
case DEVPROPTYPE.DEVPROP_TYPE_DEVPROPTYPE:
case DEVPROPTYPE.DEVPROP_TYPE_ERROR:
case DEVPROPTYPE.DEVPROP_TYPE_NTSTATUS:
case DEVPROPTYPE.DEVPROP_TYPE_SECURITY_DESCRIPTOR_STRING:
case DEVPROPTYPE.DEVPROP_TYPE_BINARY:
return mem.Convert(memSize, CorrespondingTypeAttribute.GetCorrespondingTypes(pType).First());
case DEVPROPTYPE.DEVPROP_TYPE_STRING_LIST:
case DEVPROPTYPE.DEVPROP_TYPEMOD_LIST | DEVPROPTYPE.DEVPROP_TYPE_SECURITY_DESCRIPTOR_STRING:
return mem.ToStringEnum(CharSet.Auto, 0, memSize).ToArray();
case DEVPROPTYPE.DEVPROP_TYPE_BOOLEAN:
return mem.ToStructure<BOOLEAN>(memSize).Value;
case DEVPROPTYPE.DEVPROP_TYPE_SECURITY_DESCRIPTOR:
return new System.Security.AccessControl.RawSecurityDescriptor(mem.ToArray<byte>(memSize, 0, memSize), 0);
case DEVPROPTYPE.DEVPROP_TYPE_STRING_INDIRECT:
return Environment.ExpandEnvironmentVariables(StringHelper.GetString(mem, CharSet.Auto, memSize));
default:
if (pType.IsFlagSet(DEVPROPTYPE.DEVPROP_TYPEMOD_ARRAY))
{
var elemtype = CorrespondingTypeAttribute.GetCorrespondingTypes(pType.ClearFlags(DEVPROPTYPE.DEVPROP_TYPEMOD_ARRAY)).First();
var elemsz = Marshal.SizeOf(elemtype);
return mem.ToArray(elemtype, memSize / elemsz, 0, memSize);
}
break;
}
throw new ArgumentException($"Unable to convert to {pType}.");
}
/// <summary>Splits the provided <see cref="DEVPROPTYPE"/> value into its parts.</summary>
/// <param name="value">The value.</param>
/// <returns>The type and modifier.</returns>