More fixes and documentation for printing functions

PInvoke/Printing/DocumentSource.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Runtime.InteropServices;
 using static Vanara.PInvoke.DocumentTarget;
+using static Vanara.PInvoke.Ole32;
 
 namespace Vanara.PInvoke
 {

PInvoke/Printing/DocumentTarget.cs

@@ -36,7 +36,7 @@ namespace Vanara.PInvoke
 		/// <summary>Represents the progress of the print job.</summary>
 		// https://docs.microsoft.com/en-us/windows/win32/api/documenttarget/nn-documenttarget-iprintdocumentpackagestatusevent
 		[PInvokeData("documenttarget.h", MSDNShortId = "A2178E6A-04AD-4024-A083-5C76A5F60743")]
-		[ComImport, Guid("ED90C8AD-5C34-4D05-A1EC-0E8A9B3AD7AF"), TypeLibType(TypeLibTypeFlags.FDual | TypeLibTypeFlags.FNonExtensible | TypeLibTypeFlags.FDispatchable)]
+		[ComImport, Guid("ED90C8AD-5C34-4D05-A1EC-0E8A9B3AD7AF")]
 		public interface IPrintDocumentPackageStatusEvent
 		{
 			/// <summary>Updates the status of the package when the print job in progress raises an event, or the job completes.</summary>

PInvoke/Printing/Vanara.PInvoke.Printing.csproj

@@ -54,6 +54,7 @@ HPTPROVIDER, ADDJOB_INFO_1, CORE_PRINTER_DRIVER, DATATYPES_INFO_1, DOC_INFO_1, D
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Core\Vanara.Core.csproj" />
+    <ProjectReference Include="..\Gdi32\Vanara.PInvoke.Gdi32.csproj" />
     <ProjectReference Include="..\Ole\Vanara.PInvoke.Ole.csproj" />
     <ProjectReference Include="..\Opc\Vanara.PInvoke.Opc.csproj" />
     <ProjectReference Include="..\Shared\Vanara.PInvoke.Shared.csproj" />

PInvoke/Printing/WinSpool.Enums.cs

@@ -1,5 +1,6 @@
 using System;
 using Vanara.InteropServices;
+using static Vanara.PInvoke.Gdi32;
 
 namespace Vanara.PInvoke
 {