Generate avalonia-native.h from avn.idl

azure-pipelines.yml

@@ -48,6 +48,12 @@ jobs:
         curl -o ./mono.pkg https://download.mono-project.com/archive/5.18.0/macos-10-universal/MonoFramework-MDK-5.18.0.225.macos10.xamarin.universal.pkg 
         sudo installer -verbose -pkg ./mono.pkg -target /
 
+  - task: CmdLine@2
+    displayName: 'Generate avalonia-native'
+    inputs:
+      script: |
+        cd src/tools/MicroComGenerator; dotnet run -i ../../Avalonia.Native/avn.idl --cpp ../../../native/Avalonia.Native/inc/avalonia-native.h
+
   - task: Xcode@5
     inputs:
       actions: 'build'

native/Avalonia.Native/inc/.gitignore

@@ -0,0 +1 @@
+avalonia-native.h

native/Avalonia.Native/inc/avalonia-native.h

@@ -1,516 +0,0 @@
-#include "com.h"
-#include "key.h"
-#include "stddef.h"
-
-#define AVNCOM(name, id) COMINTERFACE(name, 2e2cda0a, 9ae5, 4f1b, 8e, 20, 08, 1a, 04, 27, 9f, id)
-
-struct IAvnWindowEvents;
-struct IAvnWindow;
-struct IAvnPopup;
-struct IAvnMacOptions;
-struct IAvnPlatformThreadingInterface;
-struct IAvnSystemDialogEvents;
-struct IAvnSystemDialogs;
-struct IAvnScreens;
-struct IAvnClipboard;
-struct IAvnCursor;
-struct IAvnCursorFactory;
-struct IAvnGlFeature;
-struct IAvnGlContext;
-struct IAvnGlDisplay;
-struct IAvnGlSurfaceRenderTarget;
-struct IAvnGlSurfaceRenderingSession;
-struct IAvnMenu;
-struct IAvnMenuItem;
-struct IAvnStringArray;
-struct IAvnDndResultCallback;
-struct IAvnGCHandleDeallocatorCallback;
-struct IAvnMenuEvents;
-struct IAvnNativeControlHost;
-struct IAvnNativeControlHostTopLevelAttachment;
-enum SystemDecorations {
-    SystemDecorationsNone = 0,
-    SystemDecorationsBorderOnly = 1,
-    SystemDecorationsFull = 2,
-};
-
-struct AvnSize
-{
-    double Width, Height;
-};
-
-struct AvnPixelSize
-{
-    int Width, Height;
-};
-
-struct AvnRect
-{
-    double X, Y, Width, Height;
-};
-
-struct AvnVector
-{
-    double X, Y;
-};
-
-struct AvnPoint
-{
-    double X, Y;
-};
-
-struct AvnScreen
-{
-    AvnRect Bounds;
-    AvnRect WorkingArea;
-    float PixelDensity;
-    bool Primary;
-};
-
-enum AvnPixelFormat
-{
-    kAvnRgb565,
-    kAvnRgba8888,
-    kAvnBgra8888
-};
-
-struct AvnFramebuffer
-{
-    void* Data;
-    int Width;
-    int Height;
-    int Stride;
-    AvnVector Dpi;
-    AvnPixelFormat PixelFormat;
-};
-
-struct AvnColor
-{
-    unsigned char Alpha;
-    unsigned char Red;
-    unsigned char Green;
-    unsigned char Blue;
-};
-
-enum AvnRawMouseEventType
-{
-    LeaveWindow,
-    LeftButtonDown,
-    LeftButtonUp,
-    RightButtonDown,
-    RightButtonUp,
-    MiddleButtonDown,
-    MiddleButtonUp,
-    XButton1Down,
-    XButton1Up,
-    XButton2Down,
-    XButton2Up,
-    Move,
-    Wheel,
-    NonClientLeftButtonDown,
-    TouchBegin,
-    TouchUpdate,
-    TouchEnd,
-    TouchCancel
-};
-
-enum AvnRawKeyEventType
-{
-    KeyDown,
-    KeyUp
-};
-
-enum AvnInputModifiers
-{
-    AvnInputModifiersNone = 0,
-    Alt = 1,
-    Control = 2,
-    Shift = 4,
-    Windows = 8,
-    LeftMouseButton = 16,
-    RightMouseButton = 32,
-    MiddleMouseButton = 64,
-    XButton1MouseButton = 128,
-    XButton2MouseButton = 256
-};
-
-enum class AvnDragDropEffects
-{
-    None = 0,
-    Copy = 1,
-    Move = 2,
-    Link = 4,
-};
-
-enum class AvnDragEventType
-{
-    Enter,
-    Over,
-    Leave,
-    Drop
-};
-
-enum AvnWindowState
-{
-    Normal,
-    Minimized,
-    Maximized,
-    FullScreen,
-};
-
-enum AvnStandardCursorType
-{
-    CursorArrow,
-    CursorIbeam,
-    CursorWait,
-    CursorCross,
-    CursorUpArrow,
-    CursorSizeWestEast,
-    CursorSizeNorthSouth,
-    CursorSizeAll,
-    CursorNo,
-    CursorHand,
-    CursorAppStarting,
-    CursorHelp,
-    CursorTopSide,
-    CursorBottomSize,
-    CursorLeftSide,
-    CursorRightSide,
-    CursorTopLeftCorner,
-    CursorTopRightCorner,
-    CursorBottomLeftCorner,
-    CursorBottomRightCorner,
-    CursorDragMove,
-    CursorDragCopy,
-    CursorDragLink,
-    CursorNone
-};
-
-enum AvnWindowEdge
-{
-    WindowEdgeNorthWest,
-    WindowEdgeNorth,
-    WindowEdgeNorthEast,
-    WindowEdgeWest,
-    WindowEdgeEast,
-    WindowEdgeSouthWest,
-    WindowEdgeSouth,
-    WindowEdgeSouthEast
-};
-
-enum AvnMenuItemToggleType
-{
-    None,
-    CheckMark,
-    Radio
-};
-
-enum AvnExtendClientAreaChromeHints
-{
-    AvnNoChrome = 0,
-    AvnSystemChrome = 0x01,
-    AvnPreferSystemChrome = 0x02,
-    AvnOSXThickTitleBar = 0x08,
-    AvnDefaultChrome = AvnSystemChrome,
-};
-
-AVNCOM(IAvaloniaNativeFactory, 01) : IUnknown
-{
-public:
-    virtual HRESULT Initialize(IAvnGCHandleDeallocatorCallback* deallocator) = 0;
-    virtual IAvnMacOptions* GetMacOptions() = 0;
-    virtual HRESULT CreateWindow(IAvnWindowEvents* cb, IAvnGlContext* gl, IAvnWindow** ppv) = 0;
-    virtual HRESULT CreatePopup (IAvnWindowEvents* cb, IAvnGlContext* gl, IAvnPopup** ppv) = 0;
-    virtual HRESULT CreatePlatformThreadingInterface(IAvnPlatformThreadingInterface** ppv) = 0;
-    virtual HRESULT CreateSystemDialogs (IAvnSystemDialogs** ppv) = 0;
-    virtual HRESULT CreateScreens (IAvnScreens** ppv) = 0;
-    virtual HRESULT CreateClipboard(IAvnClipboard** ppv) = 0;
-    virtual HRESULT CreateDndClipboard(IAvnClipboard** ppv) = 0;
-    virtual HRESULT CreateCursorFactory(IAvnCursorFactory** ppv) = 0;
-    virtual HRESULT ObtainGlDisplay(IAvnGlDisplay** ppv) = 0;
-    virtual HRESULT SetAppMenu(IAvnMenu* menu) = 0;
-    virtual HRESULT CreateMenu (IAvnMenuEvents* cb, IAvnMenu** ppv) = 0;
-    virtual HRESULT CreateMenuItem (IAvnMenuItem** ppv) = 0;
-    virtual HRESULT CreateMenuItemSeperator (IAvnMenuItem** ppv) = 0;
-};
-
-AVNCOM(IAvnString, 17) : IUnknown
-{
-    virtual HRESULT Pointer(void**retOut) = 0;
-    virtual HRESULT Length(int*ret) = 0;
-};
-
-AVNCOM(IAvnWindowBase, 02) : IUnknown
-{
-    virtual HRESULT Show() = 0;
-    virtual HRESULT Hide () = 0;
-    virtual HRESULT Close() = 0;
-    virtual HRESULT Activate () = 0;
-    virtual HRESULT GetClientSize(AvnSize*ret) = 0;
-    virtual HRESULT GetScaling(double*ret)=0;
-    virtual HRESULT SetMinMaxSize(AvnSize minSize, AvnSize maxSize) = 0;
-    virtual HRESULT Resize(double width, double height) = 0;
-    virtual HRESULT Invalidate (AvnRect rect) = 0;
-    virtual HRESULT BeginMoveDrag () = 0;
-    virtual HRESULT BeginResizeDrag (AvnWindowEdge edge) = 0;
-    virtual HRESULT GetPosition (AvnPoint*ret) = 0;
-    virtual HRESULT SetPosition (AvnPoint point) = 0;
-    virtual HRESULT PointToClient (AvnPoint point, AvnPoint*ret) = 0;
-    virtual HRESULT PointToScreen (AvnPoint point, AvnPoint*ret) = 0;
-    virtual HRESULT ThreadSafeSetSwRenderedFrame(AvnFramebuffer* fb, IUnknown* dispose) = 0;
-    virtual HRESULT SetTopMost (bool value) = 0;
-    virtual HRESULT SetCursor(IAvnCursor* cursor) = 0;
-    virtual HRESULT CreateGlRenderTarget(IAvnGlSurfaceRenderTarget** ret) = 0;
-    virtual HRESULT SetMainMenu(IAvnMenu* menu) = 0;
-    virtual HRESULT ObtainNSWindowHandle(void** retOut) = 0;
-    virtual HRESULT ObtainNSWindowHandleRetained(void** retOut) = 0;
-    virtual HRESULT ObtainNSViewHandle(void** retOut) = 0;
-    virtual HRESULT ObtainNSViewHandleRetained(void** retOut) = 0;
-    virtual HRESULT CreateNativeControlHost(IAvnNativeControlHost** retOut) = 0;
-    virtual HRESULT BeginDragAndDropOperation(AvnDragDropEffects effects, AvnPoint point,
-                                              IAvnClipboard* clipboard, IAvnDndResultCallback* cb, void* sourceHandle) = 0;
-    virtual HRESULT SetBlurEnabled (bool enable) = 0;
-};
-
-AVNCOM(IAvnPopup, 03) : virtual IAvnWindowBase
-{
-    
-};
-
-AVNCOM(IAvnWindow, 04) : virtual IAvnWindowBase
-{
-    virtual HRESULT SetEnabled (bool enable) = 0;
-    virtual HRESULT SetParent (IAvnWindow* parent) = 0;
-    virtual HRESULT SetCanResize(bool value) = 0;
-    virtual HRESULT SetDecorations(SystemDecorations value) = 0;
-    virtual HRESULT SetTitle (void* utf8Title) = 0;
-    virtual HRESULT SetTitleBarColor (AvnColor color) = 0;
-    virtual HRESULT SetWindowState(AvnWindowState state) = 0;
-    virtual HRESULT GetWindowState(AvnWindowState*ret) = 0;
-    virtual HRESULT TakeFocusFromChildren() = 0;
-    virtual HRESULT SetExtendClientArea (bool enable) = 0;
-    virtual HRESULT SetExtendClientAreaHints (AvnExtendClientAreaChromeHints hints) = 0;
-    virtual HRESULT GetExtendTitleBarHeight (double*ret) = 0;
-    virtual HRESULT SetExtendTitleBarHeight (double value) = 0;
-};
-
-AVNCOM(IAvnWindowBaseEvents, 05) : IUnknown
-{
-    virtual HRESULT Paint() = 0;
-    virtual void Closed() = 0;
-    virtual void Activated() = 0;
-    virtual void Deactivated() = 0;
-    virtual void Resized(const AvnSize& size) = 0;
-    virtual void PositionChanged (AvnPoint position) = 0;
-    virtual void RawMouseEvent (AvnRawMouseEventType type,
-                                unsigned int timeStamp,
-                                AvnInputModifiers modifiers,
-                                AvnPoint point,
-                                AvnVector delta) = 0;
-    virtual bool RawKeyEvent (AvnRawKeyEventType type, unsigned int timeStamp, AvnInputModifiers modifiers, unsigned int key) = 0;
-    virtual bool RawTextInputEvent (unsigned int timeStamp, const char* text) = 0;
-    virtual void ScalingChanged(double scaling) = 0;
-    virtual void RunRenderPriorityJobs() = 0;
-    virtual void LostFocus() = 0;
-    virtual AvnDragDropEffects DragEvent(AvnDragEventType type, AvnPoint position,
-                                         AvnInputModifiers modifiers, AvnDragDropEffects effects,
-                                         IAvnClipboard* clipboard, void* dataObjectHandle) = 0;
-};
-
-
-AVNCOM(IAvnWindowEvents, 06) : IAvnWindowBaseEvents
-{
-    /**
-     * Closing Event
-     * Called when the user presses the OS window close button.
-     * return true to allow the close, return false to prevent close.
-     */
-    virtual bool Closing () = 0;
-    
-    virtual void WindowStateChanged (AvnWindowState state) = 0;
-    
-    virtual void GotInputWhenDisabled () = 0;
-};
-
-AVNCOM(IAvnMacOptions, 07) : IUnknown
-{
-    virtual HRESULT SetShowInDock(int show) = 0;
-    virtual HRESULT SetApplicationTitle (void* utf8string) = 0;
-};
-
-AVNCOM(IAvnActionCallback, 08) : IUnknown
-{
-    virtual void Run() = 0;
-};
-
-AVNCOM(IAvnSignaledCallback, 09) : IUnknown
-{
-    virtual void Signaled(int priority, bool priorityContainsMeaningfulValue) = 0;
-};
-
-AVNCOM(IAvnLoopCancellation, 0a) : IUnknown
-{
-    virtual void Cancel() = 0;
-};
-
-AVNCOM(IAvnPlatformThreadingInterface, 0b) : IUnknown
-{
-    virtual bool GetCurrentThreadIsLoopThread() = 0;
-    virtual void SetSignaledCallback(IAvnSignaledCallback* cb) = 0;
-    virtual IAvnLoopCancellation* CreateLoopCancellation() = 0;
-    virtual HRESULT RunLoop(IAvnLoopCancellation* cancel) = 0;
-    // Can't pass int* to sharpgentools for some reason
-    virtual void Signal(int priority) = 0;
-    virtual IUnknown* StartTimer(int priority, int ms, IAvnActionCallback* callback) = 0;
-};
-
-AVNCOM(IAvnSystemDialogEvents, 0c) : IUnknown
-{
-    virtual void OnCompleted (int numResults, void* ptrFirstResult) = 0;
-};
-
-AVNCOM(IAvnSystemDialogs, 0d) : IUnknown
-{
-    virtual void SelectFolderDialog (IAvnWindow* parentWindowHandle,
-                                     IAvnSystemDialogEvents* events,
-                                     const char* title,
-                                     const char* initialPath) = 0;
-    
-    virtual void OpenFileDialog (IAvnWindow* parentWindowHandle,
-                                 IAvnSystemDialogEvents* events,
-                                 bool allowMultiple,
-                                 const char* title,
-                                 const char* initialDirectory,
-                                 const char* initialFile,
-                                 const char* filters) = 0;
-    
-    virtual void SaveFileDialog (IAvnWindow* parentWindowHandle,
-                                 IAvnSystemDialogEvents* events,
-                                 const char* title,
-                                 const char* initialDirectory,
-                                 const char* initialFile,
-                                 const char* filters) = 0;
-};
-
-AVNCOM(IAvnScreens, 0e) : IUnknown
-{
-    virtual HRESULT GetScreenCount (int* ret) = 0;
-    virtual HRESULT GetScreen (int index, AvnScreen* ret) = 0;
-};
-
-AVNCOM(IAvnClipboard, 0f) : IUnknown
-{
-    virtual HRESULT GetText (char* type, IAvnString**ppv) = 0;
-    virtual HRESULT SetText (char* type, void* utf8Text) = 0;
-    virtual HRESULT ObtainFormats(IAvnStringArray**ppv) = 0;
-    virtual HRESULT GetStrings(char* type, IAvnStringArray**ppv) = 0;
-    virtual HRESULT SetBytes(char* type, void* utf8Text, int len) = 0;
-    virtual HRESULT GetBytes(char* type, IAvnString**ppv) = 0;
-    
-    virtual HRESULT Clear() = 0;
-};
-
-AVNCOM(IAvnCursor, 10) : IUnknown
-{
-};
-
-AVNCOM(IAvnCursorFactory, 11) : IUnknown
-{
-    virtual HRESULT GetCursor (AvnStandardCursorType cursorType, IAvnCursor** retOut) = 0;
-};
-
-AVNCOM(IAvnGlDisplay, 13) : IUnknown
-{
-    virtual HRESULT CreateContext(IAvnGlContext* share, IAvnGlContext**ppv) = 0;
-    virtual void LegacyClearCurrentContext() = 0;
-    virtual HRESULT WrapContext(void* native, IAvnGlContext**ppv) = 0;
-    virtual void* GetProcAddress(char* proc) = 0;
-};
-
-AVNCOM(IAvnGlContext, 14) : IUnknown
-{
-    virtual HRESULT MakeCurrent(IUnknown** ppv) = 0;
-    virtual HRESULT LegacyMakeCurrent() = 0;
-    virtual int GetSampleCount() = 0;
-    virtual int GetStencilSize() = 0;
-    virtual void* GetNativeHandle() = 0;
-};
-
-AVNCOM(IAvnGlSurfaceRenderTarget, 15) : IUnknown
-{
-    virtual HRESULT BeginDrawing(IAvnGlSurfaceRenderingSession** ret) = 0;
-};
-
-AVNCOM(IAvnGlSurfaceRenderingSession, 16) : IUnknown
-{
-    virtual HRESULT GetPixelSize(AvnPixelSize* ret) = 0;
-    virtual HRESULT GetScaling(double* ret) = 0;
-};
-
-AVNCOM(IAvnMenu, 17) : IUnknown
-{
-    virtual HRESULT InsertItem (int index, IAvnMenuItem* item) = 0;
-    virtual HRESULT RemoveItem (IAvnMenuItem* item) = 0;
-    virtual HRESULT SetTitle (void* utf8String) = 0;
-    virtual HRESULT Clear () = 0;
-};
-
-AVNCOM(IAvnPredicateCallback, 18) : IUnknown
-{
-    virtual bool Evaluate() = 0;
-};
-
-AVNCOM(IAvnMenuItem, 19) : IUnknown
-{
-    virtual HRESULT SetSubMenu (IAvnMenu* menu) = 0;
-    virtual HRESULT SetTitle (void* utf8String) = 0;
-    virtual HRESULT SetGesture (void* utf8String, AvnInputModifiers modifiers) = 0;
-    virtual HRESULT SetAction (IAvnPredicateCallback* predicate, IAvnActionCallback* callback) = 0;
-    virtual HRESULT SetIsChecked (bool isChecked) = 0;
-    virtual HRESULT SetToggleType (AvnMenuItemToggleType toggleType) = 0;
-    virtual HRESULT SetIcon (void* data, size_t length) = 0;
-};
-
-AVNCOM(IAvnMenuEvents, 1A) : IUnknown
-{
-    /**
-     * NeedsUpdate
-     */
-    virtual void NeedsUpdate () = 0;
-};
-
-AVNCOM(IAvnStringArray, 20) : IUnknown
-{
-    virtual unsigned int GetCount() = 0;
-    virtual HRESULT Get(unsigned int index, IAvnString**ppv) = 0;
-};
-
-AVNCOM(IAvnDndResultCallback, 21) : IUnknown
-{
-    virtual void OnDragAndDropComplete(AvnDragDropEffects effecct) = 0;
-};
-
-AVNCOM(IAvnGCHandleDeallocatorCallback, 22) : IUnknown
-{
-    virtual void FreeGCHandle(void* handle) = 0;
-};
-
-AVNCOM(IAvnNativeControlHost, 20) : IUnknown
-{
-    virtual HRESULT CreateDefaultChild(void* parent, void** retOut) = 0;
-    virtual IAvnNativeControlHostTopLevelAttachment* CreateAttachment() = 0;
-    virtual void DestroyDefaultChild(void* child) = 0;
-};
-
-AVNCOM(IAvnNativeControlHostTopLevelAttachment, 21) : IUnknown
-{
-    virtual void* GetParentHandle() = 0;
-    virtual HRESULT InitializeWithChildHandle(void* child) = 0;
-    virtual HRESULT AttachTo(IAvnNativeControlHost* host) = 0;
-    virtual void ShowInBounds(float x, float y, float width, float height) = 0;
-    virtual void HideWithSize(float width, float height) = 0;
-    virtual void ReleaseChild() = 0;
-};
-
-
-extern "C" IAvaloniaNativeFactory* CreateAvaloniaNative();

native/Avalonia.Native/src/OSX/clipboard.mm

@@ -67,7 +67,7 @@ public:
         }
     }
     
-    virtual HRESULT SetText (char* type, void* utf8String) override
+    virtual HRESULT SetText (char* type, char* utf8String) override
     {
         Clear();
         @autoreleasepool

native/Avalonia.Native/src/OSX/main.mm

@@ -104,9 +104,9 @@ class MacOptions : public ComSingleObject<IAvnMacOptions, &IID_IAvnMacOptions>
 public:
     FORWARD_IUNKNOWN()
     
-    virtual HRESULT SetApplicationTitle(void* utf8String) override
+    virtual HRESULT SetApplicationTitle(char* utf8String) override
     {
-        auto appTitle = [NSString stringWithUTF8String:(const char*)utf8String];
+        auto appTitle = [NSString stringWithUTF8String: utf8String];
         
         [[NSProcessInfo processInfo] setProcessName:appTitle];
         

native/Avalonia.Native/src/OSX/menu.h

@@ -43,9 +43,9 @@ public:
     
     virtual HRESULT SetSubMenu (IAvnMenu* menu) override;
     
-    virtual HRESULT SetTitle (void* utf8String) override;
+    virtual HRESULT SetTitle (char* utf8String) override;
     
-    virtual HRESULT SetGesture (void* key, AvnInputModifiers modifiers) override;
+    virtual HRESULT SetGesture (char* key, AvnInputModifiers modifiers) override;
     
     virtual HRESULT SetAction (IAvnPredicateCallback* predicate, IAvnActionCallback* callback) override;
     
@@ -80,7 +80,7 @@ public:
     
     virtual HRESULT RemoveItem (IAvnMenuItem* item) override;
     
-    virtual HRESULT SetTitle (void* utf8String) override;
+    virtual HRESULT SetTitle (char* utf8String) override;
     
     virtual HRESULT Clear () override;
 };

native/Avalonia.Native/src/OSX/menu.mm

@@ -109,7 +109,7 @@ HRESULT AvnAppMenuItem::SetSubMenu (IAvnMenu* menu)
     }
 }
 
-HRESULT AvnAppMenuItem::SetTitle (void* utf8String)
+HRESULT AvnAppMenuItem::SetTitle (char* utf8String)
 {
     @autoreleasepool
     {
@@ -122,7 +122,7 @@ HRESULT AvnAppMenuItem::SetTitle (void* utf8String)
     }
 }
 
-HRESULT AvnAppMenuItem::SetGesture (void* key, AvnInputModifiers modifiers)
+HRESULT AvnAppMenuItem::SetGesture (char* key, AvnInputModifiers modifiers)
 {
     @autoreleasepool
     {
@@ -296,7 +296,7 @@ HRESULT AvnAppMenu::RemoveItem (IAvnMenuItem* item)
     }
 }
 
-HRESULT AvnAppMenu::SetTitle (void* utf8String)
+HRESULT AvnAppMenu::SetTitle (char* utf8String)
 {
     @autoreleasepool
     {

native/Avalonia.Native/src/OSX/window.mm

@@ -768,7 +768,7 @@ private:
         }
     }
     
-    virtual HRESULT SetTitle (void* utf8title) override
+    virtual HRESULT SetTitle (char* utf8title) override
     {
         @autoreleasepool
         {

nukebuild/MicroComGen.cs

@@ -0,0 +1,14 @@
+using System.IO;
+using MicroComGenerator;
+using Nuke.Common;
+
+partial class Build : NukeBuild
+{
+    Target GenerateCppHeaders => _ => _.Executes(() =>
+    {
+        var text = File.ReadAllText(RootDirectory / "src" / "Avalonia.Native" / "avn.idl");
+        var ast = AstParser.Parse(text);
+        File.WriteAllText(RootDirectory / "native" / "Avalonia.Native" / "inc" / "avalonia-native.h",
+            CppGen.GenerateCpp(ast));
+    });
+}

nukebuild/_build.csproj

@@ -39,4 +39,8 @@
     <Compile Include="Numerge/Numerge/**/*.cs" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\src\tools\MicroComGenerator\MicroComGenerator.csproj" />
+  </ItemGroup>
+
 </Project>

src/Avalonia.Native/avn.idl

@@ -254,13 +254,13 @@ interface IAvnWindowBase : IUnknown
      HRESULT SetBlurEnabled(bool enable);
 }
 
-[uuid(83e588f3-6981-4e48-9ea0-e1e569f79a91)]
+[uuid(83e588f3-6981-4e48-9ea0-e1e569f79a91), cpp-virtual-inherits]
 interface IAvnPopup : IAvnWindowBase
 {
     
 }
 
-[uuid(cab661de-49d6-4ead-b59c-eac9b2b6c28d)]
+[uuid(cab661de-49d6-4ead-b59c-eac9b2b6c28d), cpp-virtual-inherits]
 interface IAvnWindow : IAvnWindowBase
 {
      HRESULT SetEnabled(bool enable);
@@ -285,7 +285,7 @@ interface IAvnWindowBaseEvents : IUnknown
      void Closed();
      void Activated();
      void Deactivated();
-     void Resized([const] AvnSize* size);
+     void Resized([const] AvnSize& size);
      void PositionChanged(AvnPoint position);
      void RawMouseEvent(AvnRawMouseEventType type,
                                 uint timeStamp,

src/tools/MicroComGenerator/Ast.cs

@@ -83,10 +83,16 @@ namespace MicroComGenerator.Ast
     {
         public string Name { get; set; }
         public int PointerLevel { get; set; }
+        public bool IsLink { get; set; }
 
-        public string Format() => Name + new string('*', PointerLevel);
+        public string Format() => Name + new string('*', PointerLevel)
+                                       + (IsLink ? "&" : "");
         public override string ToString() => Format();
-        public AstTypeNode Clone() => new AstTypeNode() { Name = Name, PointerLevel = PointerLevel };
+        public AstTypeNode Clone() => new AstTypeNode() { 
+            Name = Name,
+            PointerLevel = PointerLevel,
+            IsLink = IsLink
+        };
     }
 
     public class AstStructMemberNode : IAstNodeWithAttributes

src/tools/MicroComGenerator/AstParser.cs

@@ -146,6 +146,8 @@ namespace MicroComGenerator
             var t = new AstTypeNode { Name = ident };
             while (parser.TryConsume('*'))
                 t.PointerLevel++;
+            if (parser.TryConsume("&"))
+                t.IsLink = true;
             return t;
         }
 

src/tools/MicroComGenerator/CSharpGen.cs

@@ -53,6 +53,17 @@ namespace MicroComGenerator
                 base.VisitStructMember(member);
             }
 
+            protected override void VisitType(AstTypeNode type)
+            {
+                if (type.IsLink)
+                {
+                    type.PointerLevel++;
+                    type.IsLink = false;
+                }
+                
+                base.VisitType(type);
+            }
+
             protected override void VisitArgument(AstInterfaceMemberArgumentNode argument)
             {
                 if (argument.HasAttribute("intptr"))

src/tools/MicroComGenerator/CppGen.cs

@@ -35,7 +35,6 @@ namespace MicroComGenerator
                 sb.Append("enum ");
                 if (en.Attributes.Any(a => a.Name == "class-enum"))
                     sb.Append("class ");
-                sb.Append(en.Name).Append(" ");
                 sb.AppendLine(en.Name).AppendLine("{");
 
                 foreach (var m in en)
@@ -73,30 +72,42 @@ namespace MicroComGenerator
                     sb.Append(", ").Append(guid.Substring(16 + c * 2, 2));
                 }
 
-                sb.Append(") : ")
-                    .AppendLine(i.Inherits ?? "IUnknown")
+                sb.Append(") : ");
+                if (i.HasAttribute("cpp-virtual-inherits"))
+                    sb.Append("virtual ");
+                sb.AppendLine(i.Inherits ?? "IUnknown")
                     .AppendLine("{");
 
                 foreach (var m in i)
                 {
-                    sb.Append("    ").Append(ConvertType(m.ReturnType)).Append(" ").Append(m.Name).AppendLine(" (");
-                    for (var c = 0; c < m.Count; c++)
+                    sb.Append("    ")
+                        .Append("virtual ")
+                        .Append(ConvertType(m.ReturnType))
+                        .Append(" ").Append(m.Name).Append(" (");
+                    if (m.Count == 0)
+                        sb.AppendLine(") = 0;");
+                    else
                     {
-                        var arg = m[c];
-                        sb.Append("        ");
-                        if (arg.Attributes.Any(a => a.Name == "const"))
-                            sb.Append("const ");
-                        sb.Append(ConvertType(arg.Type))
-                            .Append(" ")
-                            .Append(arg.Name);
-                        if (c != m.Count - 1)
-                            sb.Append(", ");
                         sb.AppendLine();
-                        sb.AppendLine("    );");
+                        for (var c = 0; c < m.Count; c++)
+                        {
+                            var arg = m[c];
+                            sb.Append("        ");
+                            if (arg.Attributes.Any(a => a.Name == "const"))
+                                sb.Append("const ");
+                            sb.Append(ConvertType(arg.Type))
+                                .Append(" ")
+                                .Append(arg.Name);
+                            if (c != m.Count - 1)
+                                sb.Append(", ");
+                            sb.AppendLine();
+                        }
+
+                        sb.AppendLine("    ) = 0;");
                     }
                 }
 
-                sb.AppendLine("}");
+                sb.AppendLine("};");
             }
             
             return sb.ToString();