diff --git a/dtool/src/parser-inc/control.h b/dtool/src/parser-inc/control.h
index 4599506ed7..305b5bbbc7 100644
--- a/dtool/src/parser-inc/control.h
+++ b/dtool/src/parser-inc/control.h
@@ -1,6 +1,10 @@
+class IMoniker;
+class IMediaSample;
+class IMemAllocator;
 class IMediaControl;
+class IMemInputPin;
 class IGraphBuilder;
 class ICaptureGraphBuilder2;
 class IBaseFilter;
-class IVMRWindowlessControl;
+class IAMStreamConfig;
 template <class T> class CComPtr;
diff --git a/dtool/src/parser-inc/windows.h b/dtool/src/parser-inc/windows.h
index 2556eef0f8..49d955f8cc 100644
--- a/dtool/src/parser-inc/windows.h
+++ b/dtool/src/parser-inc/windows.h
@@ -31,6 +31,11 @@ typedef long HRESULT;
 typedef int CRITICAL_SECTION;
 typedef int HANDLE;
 typedef void *LPVOID;
+typedef unsigned short WCHAR;
+typedef WCHAR *BSTR;
+typedef struct _MediaType AM_MEDIA_TYPE;
+typedef struct _VIDEO_STREAM_CONFIG_CAPS VIDEO_STREAM_CONFIG_CAPS;
+typedef struct _GUID GUID;
 
 #define WINAPI