diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFactory.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFactory.cs
index 8dbc52d8c25..4d3a61b279d 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFactory.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFactory.cs
@@ -12,47 +12,47 @@ internal unsafe struct IDWriteFactory : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFactory*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteFactory*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFactory*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, uint>)(lpVtbl[1]))((IDWriteFactory*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFactory*, uint>)(lpVtbl[1]))((IDWriteFactory*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, uint>)(lpVtbl[2]))((IDWriteFactory*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFactory*, uint>)(lpVtbl[2]))((IDWriteFactory*)Unsafe.AsPointer(ref this));
         }
 
         public int GetSystemFontCollection(IDWriteFontCollection** fontCollection, int checkForUpdates = 0)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, IDWriteFontCollection**, int, int>)(lpVtbl[3]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontCollection, checkForUpdates);
+            return ((delegate* unmanaged<IDWriteFactory*, IDWriteFontCollection**, int, int>)(lpVtbl[3]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontCollection, checkForUpdates);
         }
 
         public int CreateCustomFontCollection(IDWriteFontCollectionLoader* collectionLoader, void* collectionKey, uint collectionKeySize, IDWriteFontCollection** fontCollection)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, IDWriteFontCollectionLoader*, void*, uint, IDWriteFontCollection**, int>)(lpVtbl[4]))((IDWriteFactory*)Unsafe.AsPointer(ref this), collectionLoader, collectionKey, collectionKeySize, fontCollection);
+            return ((delegate* unmanaged<IDWriteFactory*, IDWriteFontCollectionLoader*, void*, uint, IDWriteFontCollection**, int>)(lpVtbl[4]))((IDWriteFactory*)Unsafe.AsPointer(ref this), collectionLoader, collectionKey, collectionKeySize, fontCollection);
         }
 
         public int RegisterFontCollectionLoader(IDWriteFontCollectionLoader* fontCollectionLoader)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, IDWriteFontCollectionLoader*, int>)(lpVtbl[5]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontCollectionLoader);
+            return ((delegate* unmanaged<IDWriteFactory*, IDWriteFontCollectionLoader*, int>)(lpVtbl[5]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontCollectionLoader);
         }
 
         public int CreateFontFace(DWRITE_FONT_FACE_TYPE fontFaceType, uint numberOfFiles, IDWriteFontFile** fontFiles, uint faceIndex, DWRITE_FONT_SIMULATIONS fontFaceSimulationFlags, IDWriteFontFace** fontFace)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, DWRITE_FONT_FACE_TYPE, uint, IDWriteFontFile**, uint, DWRITE_FONT_SIMULATIONS, IDWriteFontFace**, int>)(lpVtbl[9]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontFaceType, numberOfFiles, fontFiles, faceIndex, fontFaceSimulationFlags, fontFace);
+            return ((delegate* unmanaged<IDWriteFactory*, DWRITE_FONT_FACE_TYPE, uint, IDWriteFontFile**, uint, DWRITE_FONT_SIMULATIONS, IDWriteFontFace**, int>)(lpVtbl[9]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontFaceType, numberOfFiles, fontFiles, faceIndex, fontFaceSimulationFlags, fontFace);
         }
 
         public int RegisterFontFileLoader(IDWriteFontFileLoader* fontFileLoader)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, IDWriteFontFileLoader*, int>)(lpVtbl[13]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontFileLoader);
+            return ((delegate* unmanaged<IDWriteFactory*, IDWriteFontFileLoader*, int>)(lpVtbl[13]))((IDWriteFactory*)Unsafe.AsPointer(ref this), fontFileLoader);
         }
 
         public int CreateTextAnalyzer(IDWriteTextAnalyzer** textAnalyzer)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFactory*, IDWriteTextAnalyzer**, int>)(lpVtbl[21]))((IDWriteFactory*)Unsafe.AsPointer(ref this), textAnalyzer);
+            return ((delegate* unmanaged<IDWriteFactory*, IDWriteTextAnalyzer**, int>)(lpVtbl[21]))((IDWriteFactory*)Unsafe.AsPointer(ref this), textAnalyzer);
         }
     }
 }
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollection.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollection.cs
index a3c8204f6fb..9107e4e8f53 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollection.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollection.cs
@@ -12,17 +12,17 @@ internal unsafe struct IDWriteFontCollection : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontCollection*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontCollection*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteFontCollection*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontCollection*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontCollection*, uint>)(lpVtbl[1]))((IDWriteFontCollection*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontCollection*, uint>)(lpVtbl[1]))((IDWriteFontCollection*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontCollection*, uint>)(lpVtbl[2]))((IDWriteFontCollection*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontCollection*, uint>)(lpVtbl[2]))((IDWriteFontCollection*)Unsafe.AsPointer(ref this));
         }
     }
 }
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollectionLoader.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollectionLoader.cs
index 794f88dbb47..44fddcccd47 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollectionLoader.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontCollectionLoader.cs
@@ -12,17 +12,17 @@ internal unsafe struct IDWriteFontCollectionLoader : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontCollectionLoader*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontCollectionLoader*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteFontCollectionLoader*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontCollectionLoader*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontCollectionLoader*, uint>)(lpVtbl[1]))((IDWriteFontCollectionLoader*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontCollectionLoader*, uint>)(lpVtbl[1]))((IDWriteFontCollectionLoader*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontCollectionLoader*, uint>)(lpVtbl[2]))((IDWriteFontCollectionLoader*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontCollectionLoader*, uint>)(lpVtbl[2]))((IDWriteFontCollectionLoader*)Unsafe.AsPointer(ref this));
         }
     }
 }
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFace.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFace.cs
index 90b09e057f7..4ca49c06a39 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFace.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFace.cs
@@ -12,17 +12,17 @@ internal unsafe struct IDWriteFontFace : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFace*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontFace*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteFontFace*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontFace*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFace*, uint>)(lpVtbl[1]))((IDWriteFontFace*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontFace*, uint>)(lpVtbl[1]))((IDWriteFontFace*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFace*, uint>)(lpVtbl[2]))((IDWriteFontFace*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontFace*, uint>)(lpVtbl[2]))((IDWriteFontFace*)Unsafe.AsPointer(ref this));
         }
     }
 }
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFile.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFile.cs
index 12ef4b0f086..ddb46baae68 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFile.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFile.cs
@@ -12,17 +12,17 @@ internal unsafe struct IDWriteFontFile : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFile*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontFile*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteFontFile*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontFile*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFile*, uint>)(lpVtbl[1]))((IDWriteFontFile*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontFile*, uint>)(lpVtbl[1]))((IDWriteFontFile*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFile*, uint>)(lpVtbl[2]))((IDWriteFontFile*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontFile*, uint>)(lpVtbl[2]))((IDWriteFontFile*)Unsafe.AsPointer(ref this));
         }
     }
 }
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFileLoader.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFileLoader.cs
index 984f5929a6e..8841d32884a 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFileLoader.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteFontFileLoader.cs
@@ -12,17 +12,17 @@ internal unsafe struct IDWriteFontFileLoader : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFileLoader*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontFileLoader*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteFontFileLoader*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteFontFileLoader*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFileLoader*, uint>)(lpVtbl[1]))((IDWriteFontFileLoader*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontFileLoader*, uint>)(lpVtbl[1]))((IDWriteFontFileLoader*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteFontFileLoader*, uint>)(lpVtbl[2]))((IDWriteFontFileLoader*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteFontFileLoader*, uint>)(lpVtbl[2]))((IDWriteFontFileLoader*)Unsafe.AsPointer(ref this));
         }
     }
 }
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteTextAnalyzer.cs b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteTextAnalyzer.cs
index c4f8f72b4b6..308d6b87c18 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteTextAnalyzer.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationCore/MS/internal/Interop/DWrite/IDWriteTextAnalyzer.cs
@@ -12,17 +12,17 @@ internal unsafe struct IDWriteTextAnalyzer : IUnknown
 
         public int QueryInterface(Guid* riid, void** ppvObject)
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteTextAnalyzer*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteTextAnalyzer*)Unsafe.AsPointer(ref this), riid, ppvObject);
+            return ((delegate* unmanaged<IDWriteTextAnalyzer*, Guid*, void**, int>)(lpVtbl[0]))((IDWriteTextAnalyzer*)Unsafe.AsPointer(ref this), riid, ppvObject);
         }
 
         public uint AddRef()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteTextAnalyzer*, uint>)(lpVtbl[1]))((IDWriteTextAnalyzer*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteTextAnalyzer*, uint>)(lpVtbl[1]))((IDWriteTextAnalyzer*)Unsafe.AsPointer(ref this));
         }
 
         public uint Release()
         {
-            return ((delegate* unmanaged[Stdcall]<IDWriteTextAnalyzer*, uint>)(lpVtbl[2]))((IDWriteTextAnalyzer*)Unsafe.AsPointer(ref this));
+            return ((delegate* unmanaged<IDWriteTextAnalyzer*, uint>)(lpVtbl[2]))((IDWriteTextAnalyzer*)Unsafe.AsPointer(ref this));
         }
     }
 }