HANDLE* parameters should not be annotated [In, Out]

[AArnott]

Several methods take pointers to handle structs and are annotated with [In, Out] even though they only ever read from these pointers. Can these annotations be modified to just [In] where it is safe to do so?

Here is a list of suspect APIs (as they appear in a list of warnings due to this characteristic):

Test Name:	GeneratorTests.FullGeneration
Test Outcome:	Failed
Result Message:	
Assert.Empty() Failure
Collection: [DXVAHDSW_CALLBACKS.cs(32,107): error CS0208: Cannot take the address of, get the size of, or declare a pointer to a managed type ('CloseHandleSafeHandle'), DXVAHDSW_CALLBACKS.cs(59,123): error CS0208: Cannot take the address of, get the size of, or declare a pointer to a managed type ('CloseHandleSafeHandle'), PInvoke.Kernel32.cs(2709,32): error CS0246: The type or namespace name 'ClosePrivateNamespaceSafeHandle' could not be found (are you missing a using directive or an assembly reference?), PInvoke.Kernel32.cs(2718,39): error CS0246: The type or namespace name 'ClosePrivateNamespaceSafeHandle' could not be found (are you missing a using directive or an assembly reference?), DsGetDcCloseWSafeHandle.cs(46,34): error CS1503: Argument 1: cannot convert from 'Microsoft.Windows.Sdk.HANDLE' to 'Microsoft.Windows.Sdk.CloseHandleSafeHandle', ...]
Result StandardOutput:	
DXVAHDSW_CALLBACKS.cs(32,107): error CS0208: Cannot take the address of, get the size of, or declare a pointer to a managed type ('CloseHandleSafeHandle')
DXVAHDSW_CALLBACKS.cs(59,123): error CS0208: Cannot take the address of, get the size of, or declare a pointer to a managed type ('CloseHandleSafeHandle')
PInvoke.Kernel32.cs(2709,32): error CS0246: The type or namespace name 'ClosePrivateNamespaceSafeHandle' could not be found (are you missing a using directive or an assembly reference?)
PInvoke.Kernel32.cs(2718,39): error CS0246: The type or namespace name 'ClosePrivateNamespaceSafeHandle' could not be found (are you missing a using directive or an assembly reference?)
DsGetDcCloseWSafeHandle.cs(46,34): error CS1503: Argument 1: cannot convert from 'Microsoft.Windows.Sdk.HANDLE' to 'Microsoft.Windows.Sdk.CloseHandleSafeHandle'
PInvoke.t2embed.cs(426,33): warning CS1574: XML comment has cref attribute 'TTGetNewFontName(CloseHandleSafeHandle, char *, int, byte *, int)' that could not be resolved
PInvoke.NetApi32.cs(1253,33): warning CS1574: XML comment has cref attribute 'DavAddConnection(CloseHandleSafeHandle, char *, char *, char *, byte *, uint)' that could not be resolved
PInvoke.IPHlpApi.cs(656,33): warning CS1574: XML comment has cref attribute 'NotifyStableUnicastIpAddressTable(ushort, MIB_UNICASTIPADDRESS_TABLE**, PSTABLE_UNICAST_IPADDRESS_TABLE_CALLBACK, void *, CloseHandleSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1805,33): warning CS1574: XML comment has cref attribute 'HBITMAP_UserSize(uint *, uint, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1816,33): warning CS1574: XML comment has cref attribute 'HBITMAP_UserMarshal(uint *, byte *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1846,33): warning CS1574: XML comment has cref attribute 'HBITMAP_UserFree(uint *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1857,33): warning CS1574: XML comment has cref attribute 'HDC_UserSize(uint *, uint, DeleteDCSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1868,33): warning CS1574: XML comment has cref attribute 'HDC_UserMarshal(uint *, byte *, DeleteDCSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1898,33): warning CS1574: XML comment has cref attribute 'HDC_UserFree(uint *, DeleteDCSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1909,33): warning CS1574: XML comment has cref attribute 'HICON_UserSize(uint *, uint, DestroyIconSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1920,33): warning CS1574: XML comment has cref attribute 'HICON_UserMarshal(uint *, byte *, DestroyIconSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(1950,33): warning CS1574: XML comment has cref attribute 'HICON_UserFree(uint *, DestroyIconSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2089,33): warning CS1574: XML comment has cref attribute 'HBITMAP_UserSize64(uint *, uint, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2100,33): warning CS1574: XML comment has cref attribute 'HBITMAP_UserMarshal64(uint *, byte *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2130,33): warning CS1574: XML comment has cref attribute 'HBITMAP_UserFree64(uint *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2141,33): warning CS1574: XML comment has cref attribute 'HDC_UserSize64(uint *, uint, DeleteDCSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2152,33): warning CS1574: XML comment has cref attribute 'HDC_UserMarshal64(uint *, byte *, DeleteDCSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2182,33): warning CS1574: XML comment has cref attribute 'HDC_UserFree64(uint *, DeleteDCSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2193,33): warning CS1574: XML comment has cref attribute 'HICON_UserSize64(uint *, uint, DestroyIconSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2204,33): warning CS1574: XML comment has cref attribute 'HICON_UserMarshal64(uint *, byte *, DestroyIconSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2234,33): warning CS1574: XML comment has cref attribute 'HICON_UserFree64(uint *, DestroyIconSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2309,33): warning CS1574: XML comment has cref attribute 'HACCEL_UserSize(uint *, uint, DestroyAcceleratorTableSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2320,33): warning CS1574: XML comment has cref attribute 'HACCEL_UserMarshal(uint *, byte *, DestroyAcceleratorTableSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2350,33): warning CS1574: XML comment has cref attribute 'HACCEL_UserFree(uint *, DestroyAcceleratorTableSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2425,33): warning CS1574: XML comment has cref attribute 'HMENU_UserSize(uint *, uint, DestroyMenuSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2436,33): warning CS1574: XML comment has cref attribute 'HMENU_UserMarshal(uint *, byte *, DestroyMenuSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2466,33): warning CS1574: XML comment has cref attribute 'HMENU_UserFree(uint *, DestroyMenuSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2477,33): warning CS1574: XML comment has cref attribute 'HACCEL_UserSize64(uint *, uint, DestroyAcceleratorTableSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2488,33): warning CS1574: XML comment has cref attribute 'HACCEL_UserMarshal64(uint *, byte *, DestroyAcceleratorTableSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2518,33): warning CS1574: XML comment has cref attribute 'HACCEL_UserFree64(uint *, DestroyAcceleratorTableSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2593,33): warning CS1574: XML comment has cref attribute 'HMENU_UserSize64(uint *, uint, DestroyMenuSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2604,33): warning CS1574: XML comment has cref attribute 'HMENU_UserMarshal64(uint *, byte *, DestroyMenuSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(2634,33): warning CS1574: XML comment has cref attribute 'HMENU_UserFree64(uint *, DestroyMenuSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(3948,33): warning CS1574: XML comment has cref attribute 'HPALETTE_UserSize(uint *, uint, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(3959,33): warning CS1574: XML comment has cref attribute 'HPALETTE_UserMarshal(uint *, byte *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(3989,33): warning CS1574: XML comment has cref attribute 'HPALETTE_UserFree(uint *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(4000,33): warning CS1574: XML comment has cref attribute 'HRGN_UserSize(uint *, uint, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(4011,33): warning CS1574: XML comment has cref attribute 'HRGN_UserMarshal(uint *, byte *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(4041,33): warning CS1574: XML comment has cref attribute 'HRGN_UserFree(uint *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(4052,33): warning CS1574: XML comment has cref attribute 'HPALETTE_UserSize64(uint *, uint, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(4063,33): warning CS1574: XML comment has cref attribute 'HPALETTE_UserMarshal64(uint *, byte *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.Ole32.cs(4093,33): warning CS1574: XML comment has cref attribute 'HPALETTE_UserFree64(uint *, DeleteObjectSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(34,33): warning CS1574: XML comment has cref attribute 'BSTR_UserSize(uint *, uint, SysFreeStringSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(50,33): warning CS1574: XML comment has cref attribute 'BSTR_UserMarshal(uint *, byte *, SysFreeStringSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(94,33): warning CS1574: XML comment has cref attribute 'BSTR_UserFree(uint *, SysFreeStringSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(200,33): warning CS1574: XML comment has cref attribute 'BSTR_UserSize64(uint *, uint, SysFreeStringSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(216,33): warning CS1574: XML comment has cref attribute 'BSTR_UserMarshal64(uint *, byte *, SysFreeStringSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(260,33): warning CS1574: XML comment has cref attribute 'BSTR_UserFree64(uint *, SysFreeStringSafeHandle)' that could not be resolved
PInvoke.OleAut32.cs(628,33): warning CS1574: XML comment has cref attribute 'SysReAllocString(SysFreeStringSafeHandle, ushort *)' that could not be resolved
PInvoke.OleAut32.cs(665,33): warning CS1574: XML comment has cref attribute 'SysReAllocStringLen(SysFreeStringSafeHandle, ushort *, uint)' that could not be resolved