Update release

Import/GacUI.h

@@ -813,6 +813,13 @@ Basic Construction
 				virtual IGuiGraphicsRenderer*			Create()=0;
 			};
 
+			enum RenderTargetFailure
+			{
+				None,
+				ResizeWhileRendering,
+				LostDevice,
+			};
+
 			/// <summary>
 			/// This is the interface for graphics renderer targets.
 			/// </summary>
@@ -827,7 +834,7 @@ Basic Construction
 				/// Notify the target to stop rendering.
 				/// </summary>
 				/// <returns>Returns false to recreate render target.</returns>
-				virtual bool							StopRendering()=0;
+				virtual RenderTargetFailure				StopRendering()=0;
 				/// <summary>
 				/// Apply a clipper to the render target.
 				/// The result clipper is combined by all clippers in the clipper stack maintained by the render target.
@@ -2981,6 +2988,11 @@ Resource Manager
 				/// <param name="window">The specified window.</param>
 				virtual void							RecreateRenderTarget(INativeWindow* window) = 0;
 				/// <summary>
+				/// Resize the render target to fit the current window size.
+				/// </summary>
+				/// <param name="window">The specified window.</param>
+				virtual void							ResizeRenderTarget(INativeWindow* window) = 0;
+				/// <summary>
 				/// Get the renderer awared rich text document layout engine provider object.
 				/// </summary>
 				/// <returns>Returns the layout provider.</returns>
@@ -6888,7 +6900,6 @@ Table Compositions
 				collections::Array<vint>					rowSizes;
 				collections::Array<vint>					columnSizes;
 
-				Rect										previousBounds;
 				Size										previousContentMinSize;
 				Size										tableContentMinSize;
 
@@ -8019,6 +8030,7 @@ Host
 				vint									FilterTitles();
 				void									ClearAltHost();
 				void									CloseAltHost();
+				void									RefreshRelatedHostRecord(INativeWindow* nativeWindow);
 
 				void									DisconnectCompositionInternal(GuiGraphicsComposition* composition);
 				void									MouseCapture(const NativeWindowMouseInfo& info);
@@ -10806,13 +10818,15 @@ List Control
 
 				class ItemCallback : public IItemProviderCallback, public IItemArrangerCallback
 				{
-					typedef collections::List<IItemStyleController*>			StyleList;
+					typedef collections::List<IItemStyleController*>													StyleList;
+					typedef collections::Dictionary<IItemStyleController*, Ptr<compositions::IGuiGraphicsEventHandler>>	InstalledStyleMap;
 				protected:
 					GuiListControl*								listControl;
 					IItemProvider*								itemProvider;
 					StyleList									cachedStyles;
-					StyleList									installedStyles;
+					InstalledStyleMap							installedStyles;
 
+					void										OnStyleBoundsChanged(compositions::GuiGraphicsComposition* sender, compositions::GuiEventArgs& arguments);
 				public:
 					ItemCallback(GuiListControl* _listControl);
 					~ItemCallback();

Import/GacUICompiler.cpp

@@ -2915,21 +2915,29 @@ GuiInstanceContext
 							errors.Add(GuiResourceError({ {resource},element->codeRange.start }, L"ref.Parameter requires the following attributes existing at the same time: Name, Class."));
 						}
 					}
-					else if (element->name.value == L"ref.Members")
-					{
-						if (element->subNodes.Count() == 1)
-						{
-							if (auto cdata = element->subNodes[0].Cast<XmlCData>())
-							{
-								context->memberScript = cdata->content.value;
-								context->memberPosition = { {resource},cdata->codeRange.start };
-								context->memberPosition.column += 9; // <![CDATA[
-								goto MEMBERSCRIPT_SUCCESS;
-							}
-						}
-						errors.Add(GuiResourceError({ {resource},element->codeRange.start }, L"Script should be contained in a CDATA section."));
-					MEMBERSCRIPT_SUCCESS:;
-					}
+
+#define COLLECT_SCRIPT(NAME, SCRIPT, POSITION)\
+					(element->name.value == L"ref." #NAME)\
+					{\
+						if (element->subNodes.Count() == 1)\
+						{\
+							if (auto cdata = element->subNodes[0].Cast<XmlCData>())\
+							{\
+								context->SCRIPT = cdata->content.value;\
+								context->POSITION = { {resource},cdata->codeRange.start };\
+								context->POSITION.column += 9; /* <![CDATA[ */\
+								goto NAME##_SCRIPT_SUCCESS;\
+							}\
+						}\
+						errors.Add(GuiResourceError({ {resource},element->codeRange.start }, L"Script should be contained in a CDATA section."));\
+					NAME##_SCRIPT_SUCCESS:;\
+					}\
+
+					else if COLLECT_SCRIPT(Members, memberScript, memberPosition)
+					else if COLLECT_SCRIPT(Ctor, ctorScript, ctorPosition)
+					else if COLLECT_SCRIPT(Dtor, dtorScript, dtorPosition)
+
+#undef COLLECT_SCRIPT
 					else if (!context->instance)
 					{
 						context->instance = LoadCtor(resource, element, errors);
@@ -3002,16 +3010,22 @@ GuiInstanceContext
 				xmlParameter->attributes.Add(attClass);
 			}
 
-			if (memberScript != L"")
-			{
-				auto xmlMembers = MakePtr<XmlElement>();
-				xmlMembers->name.value = L"ref.Members";
-				xmlInstance->subNodes.Add(xmlMembers);
+#define SERIALIZE_SCRIPT(NAME, SCRIPT)\
+			if (SCRIPT != L"")\
+			{\
+				auto xmlScript = MakePtr<XmlElement>();\
+				xmlScript->name.value = L"ref." #NAME;\
+				xmlInstance->subNodes.Add(xmlScript);\
+				auto text = MakePtr<XmlCData>();\
+				text->content.value = SCRIPT;\
+				xmlScript->subNodes.Add(text);\
+			}\
 
-				auto text = MakePtr<XmlCData>();
-				text->content.value = memberScript;
-				xmlMembers->subNodes.Add(text);
-			}
+			SERIALIZE_SCRIPT(Members, memberScript)
+			SERIALIZE_SCRIPT(Ctpr, ctorScript)
+			SERIALIZE_SCRIPT(Dtor, dtorScript)
+
+#undef SERIALIZE_SCRIPT
 
 			if (stylePaths.Count() > 0)
 			{
@@ -7271,6 +7285,10 @@ Workflow_GenerateInstanceClass
 				return nullptr;
 			}
 
+			///////////////////////////////////////////////////////////////
+			// Instance Class
+			///////////////////////////////////////////////////////////////
+
 			auto module = Workflow_CreateModuleWithUsings(context);
 			auto instanceClass = Workflow_InstallClass(context->className, module);
 			{
@@ -7291,6 +7309,11 @@ Workflow_GenerateInstanceClass
 					instanceClass->attributes.Add(att);
 				}
 			}
+
+			///////////////////////////////////////////////////////////////
+			// Inherit from Constructor Class
+			///////////////////////////////////////////////////////////////
+
 			if (!beforePrecompile)
 			{
 				auto baseType = MakePtr<WfReferenceType>();
@@ -7310,6 +7333,10 @@ Workflow_GenerateInstanceClass
 				}
 			}
 
+			///////////////////////////////////////////////////////////////
+			// Helpers
+			///////////////////////////////////////////////////////////////
+
 			auto parseClassMembers = [&](const WString& code, const WString& name, List<Ptr<WfDeclaration>>& memberDecls, GuiResourceTextPos position)
 			{
 				WString wrappedCode = L"module parse_members; class Class {\r\n" + code + L"\r\n}";
@@ -7340,6 +7367,10 @@ Workflow_GenerateInstanceClass
 				return block;
 			};
 
+			///////////////////////////////////////////////////////////////
+			// ref.Members
+			///////////////////////////////////////////////////////////////
+
 			if (context->memberScript != L"")
 			{
 				List<Ptr<WfDeclaration>> memberDecls;
@@ -7360,6 +7391,10 @@ Workflow_GenerateInstanceClass
 				CopyFrom(instanceClass->declarations, memberDecls, true);
 			}
 
+			///////////////////////////////////////////////////////////////
+			// Constructor Declaration
+			///////////////////////////////////////////////////////////////
+
 			auto ctor = MakePtr<WfConstructorDeclaration>();
 			ctor->constructorType = WfConstructorType::RawPtr;
 			auto ctorBlock = (beforePrecompile ? notImplemented() : MakePtr<WfBlockStatement>());
@@ -7393,6 +7428,10 @@ Workflow_GenerateInstanceClass
 				}
 			}
 
+			///////////////////////////////////////////////////////////////
+			// ref.Parameter (Variable, Getter, CtorArgument)
+			///////////////////////////////////////////////////////////////
+
 			FOREACH(Ptr<GuiInstanceParameter>, param, context->parameters)
 			{
 				if (auto type = Workflow_ParseType(precompileContext, { resolvingResult.resource }, param->className.ToString() + L"^", param->classPosition, errors))
@@ -7476,13 +7515,22 @@ Workflow_GenerateInstanceClass
 				}
 			}
 
+			///////////////////////////////////////////////////////////////
+			// Event Handlers
+			///////////////////////////////////////////////////////////////
+
 			if (needEventHandler)
 			{
 				WorkflowEventNamesVisitor visitor(precompileContext, resolvingResult, instanceClass, errors);
 				context->instance->Accept(&visitor);
 			}
+
 			addDecl(ctor);
 
+			///////////////////////////////////////////////////////////////
+			// Calling Constructor Class
+			///////////////////////////////////////////////////////////////
+
 			if (!beforePrecompile)
 			{
 				{
@@ -7574,13 +7622,97 @@ Workflow_GenerateInstanceClass
 				}
 			}
 
+			///////////////////////////////////////////////////////////////
+			// ref.Ctor
+			///////////////////////////////////////////////////////////////
+
+			if (context->ctorScript != L"")
 			{
-				auto dtor = MakePtr<WfDestructorDeclaration>();
-				addDecl(dtor);
+				if (auto stat = Workflow_ParseStatement(precompileContext, { resolvingResult.resource }, context->ctorScript, context->ctorPosition, errors))
+				{
+					if (!beforePrecompile)
+					{
+						if (!stat.Cast<WfBlockStatement>())
+						{
+							auto block = MakePtr<WfBlockStatement>();
+							block->statements.Add(stat);
+							stat = block;
+						}
 
-				auto block = MakePtr<WfBlockStatement>();
-				dtor->statement = block;
+						auto decl = MakePtr<WfFunctionDeclaration>();
+						decl->anonymity = WfFunctionAnonymity::Named;
+						decl->name.value = L"<instance-ctor>";
+						decl->returnType = GetTypeFromTypeInfo(TypeInfoRetriver<void>::CreateTypeInfo().Obj());
+						decl->statement = stat;
+						addDecl(decl);
 
+						{
+							auto refCtor = MakePtr<WfReferenceExpression>();
+							refCtor->name.value = L"<instance-ctor>";
+
+							auto callExpr = MakePtr<WfCallExpression>();
+							callExpr->function = refCtor;
+
+							auto exprStat = MakePtr<WfExpressionStatement>();
+							exprStat->expression = callExpr;
+							ctorBlock->statements.Add(exprStat);
+						}
+					}
+				}
+			}
+
+			///////////////////////////////////////////////////////////////
+			// Destructor
+			///////////////////////////////////////////////////////////////
+
+			auto dtor = MakePtr<WfDestructorDeclaration>();
+			auto dtorBlock = MakePtr<WfBlockStatement>();
+			dtor->statement = dtorBlock;
+
+			///////////////////////////////////////////////////////////////
+			// ref.Dtor
+			///////////////////////////////////////////////////////////////
+
+			if (context->dtorScript != L"")
+			{
+				if (auto stat = Workflow_ParseStatement(precompileContext, { resolvingResult.resource }, context->dtorScript, context->dtorPosition, errors))
+				{
+					if (!beforePrecompile)
+					{
+						if (!stat.Cast<WfBlockStatement>())
+						{
+							auto block = MakePtr<WfBlockStatement>();
+							block->statements.Add(stat);
+							stat = block;
+						}
+
+						auto decl = MakePtr<WfFunctionDeclaration>();
+						decl->anonymity = WfFunctionAnonymity::Named;
+						decl->name.value = L"<instance-dtor>";
+						decl->returnType = GetTypeFromTypeInfo(TypeInfoRetriver<void>::CreateTypeInfo().Obj());
+						decl->statement = stat;
+						addDecl(decl);
+
+						{
+							auto refDtor = MakePtr<WfReferenceExpression>();
+							refDtor->name.value = L"<instance-dtor>";
+
+							auto callExpr = MakePtr<WfCallExpression>();
+							callExpr->function = refDtor;
+
+							auto exprStat = MakePtr<WfExpressionStatement>();
+							exprStat->expression = callExpr;
+							dtorBlock->statements.Add(exprStat);
+						}
+					}
+				}
+			}
+
+			///////////////////////////////////////////////////////////////
+			// Clear Binding Subscriptions
+			///////////////////////////////////////////////////////////////
+
+			{
 				auto ref = MakePtr<WfReferenceExpression>();
 				ref->name.value = L"ClearSubscriptions";
 
@@ -7589,9 +7721,11 @@ Workflow_GenerateInstanceClass
 
 				auto stat = MakePtr<WfExpressionStatement>();
 				stat->expression = call;
-				block->statements.Add(stat);
+				dtorBlock->statements.Add(stat);
 			}
 
+			addDecl(dtor);
+
 			return module;
 		}
 

Import/GacUICompiler.h

@@ -362,11 +362,15 @@ Instance Context
 
 			ParameterList							parameters;
 			WString									memberScript;
+			WString									ctorScript;
+			WString									dtorScript;
 
 			GuiResourceTextPos						tagPosition;
 			GuiResourceTextPos						classPosition;
 			GuiResourceTextPos						stylePosition;
 			GuiResourceTextPos						memberPosition;
+			GuiResourceTextPos						ctorPosition;
+			GuiResourceTextPos						dtorPosition;
 
 			bool									appliedStyles = false;
 			StyleContextList						styles;

Import/GacUIWindows.cpp

@@ -1627,6 +1627,13 @@ Windows Platform Native Controller
 
 			void EnableCrossKernelCrashing()
 			{
+				/*
+				"HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options"
+					DWORD DisableUserModeCallbackFilter = 1
+
+				"HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TestCppCodegen.exe"
+					DWORD DisableUserModeCallbackFilter = 1
+				*/
 				typedef BOOL (WINAPI *tGetPolicy)(LPDWORD lpFlags); 
 				typedef BOOL (WINAPI *tSetPolicy)(DWORD dwFlags); 
 				const DWORD EXCEPTION_SWALLOWING = 0x1;
@@ -1660,6 +1667,8 @@ namespace vl
 {
 	namespace presentation
 	{
+		using namespace elements;
+
 		namespace windows
 		{
 			using namespace vl::collections;
@@ -1673,6 +1682,8 @@ WindowListener
 			protected:
 				ID2D1Factory*					d2dFactory;
 				INativeWindow*					window;
+				bool							rendering = false;
+				bool							movedWhileRendering = false;
 
 				virtual void					RebuildCanvas(Size size) = 0;
 			public:
@@ -1683,10 +1694,39 @@ WindowListener
 				}
 
 				void Moved()
+				{
+					if (rendering)
+					{
+						movedWhileRendering = true;
+					}
+					else
+					{
+						ResizeRenderTarget();
+					}
+				}
+
+				void ResizeRenderTarget()
 				{
 					RebuildCanvas(window->GetClientSize());
 				}
 
+				void StartRendering()
+				{
+					rendering = true;
+				}
+
+				void StopRendering()
+				{
+					rendering = false;
+				}
+
+				bool RetrieveAndResetMovedWhileRendering()
+				{
+					bool result = movedWhileRendering;
+					movedWhileRendering = false;
+					return result;
+				}
+
 				virtual ID2D1RenderTarget*		GetDirect2DRenderTarget() = 0;
 				virtual void					RecreateRenderTarget() = 0;
 				virtual bool					PresentRenderTarget() = 0;
@@ -2067,40 +2107,6 @@ ControllerListener
 
 			Direct2DWindowsNativeControllerListener* direct2DListener=0;
 
-			Direct2DWindowsNativeWindowListener* GetNativeWindowListener(INativeWindow* window)
-			{
-				vint index = direct2DListener->nativeWindowListeners.Keys().IndexOf(window);
-				return index == -1
-					? 0
-					: direct2DListener->nativeWindowListeners.Values().Get(index).Obj();
-			}
-
-			ID2D1RenderTarget* GetNativeWindowDirect2DRenderTarget(INativeWindow* window)
-			{
-				if (auto listener = GetNativeWindowListener(window))
-				{
-					return listener->GetDirect2DRenderTarget();
-				}
-				return 0;
-			}
-
-			void RecreateNativeWindowDirect2DRenderTarget(INativeWindow* window)
-			{
-				if (auto listener = GetNativeWindowListener(window))
-				{
-					return listener->RecreateRenderTarget();
-				}
-			}
-
-			bool PresentNativeWindowDirect2DRenderTarget(INativeWindow* window)
-			{
-				if (auto listener = GetNativeWindowListener(window))
-				{
-					return listener->PresentRenderTarget();
-				}
-				return true;
-			}
-
 			ID2D1Factory* GetDirect2DFactory()
 			{
 				return direct2DListener->d2dFactory.Obj();
@@ -2125,48 +2131,107 @@ OS Supporting
 
 			class WinDirect2DApplicationDirect2DObjectProvider : public IWindowsDirect2DObjectProvider
 			{
+			protected:
+
+				windows::Direct2DWindowsNativeWindowListener* GetNativeWindowListener(INativeWindow* window)
+				{
+					vint index = windows::direct2DListener->nativeWindowListeners.Keys().IndexOf(window);
+					return index == -1
+						? nullptr
+						: windows::direct2DListener->nativeWindowListeners.Values().Get(index).Obj();
+				}
+
 			public:
-				void RecreateRenderTarget(INativeWindow* window)
+				void RecreateRenderTarget(INativeWindow* window)override
 				{
-					vl::presentation::windows::RecreateNativeWindowDirect2DRenderTarget(window);
+					if (auto listener = GetNativeWindowListener(window))
+					{
+						return listener->RecreateRenderTarget();
+					}
 				}
 
-				bool PresentRenderTarget(INativeWindow* window)
+				void ResizeRenderTarget(INativeWindow* window)override
 				{
-					return vl::presentation::windows::PresentNativeWindowDirect2DRenderTarget(window);
+					if (auto listener = GetNativeWindowListener(window))
+					{
+						return listener->ResizeRenderTarget();
+					}
 				}
 
-				ID2D1RenderTarget* GetNativeWindowDirect2DRenderTarget(INativeWindow* window)
+				ID2D1RenderTarget* GetNativeWindowDirect2DRenderTarget(INativeWindow* window)override
 				{
-					return vl::presentation::windows::GetNativeWindowDirect2DRenderTarget(window);
+					if (auto listener = GetNativeWindowListener(window))
+					{
+						return listener->GetDirect2DRenderTarget();
+					}
+					return nullptr;
 				}
 
-				ID2D1Factory* GetDirect2DFactory()
+				void StartRendering(INativeWindow* window)override
+				{
+					if (auto listener = GetNativeWindowListener(window))
+					{
+						listener->StartRendering();
+						if (auto renderTarget = listener->GetDirect2DRenderTarget())
+						{
+							renderTarget->BeginDraw();
+							renderTarget->Clear(D2D1::ColorF(D2D1::ColorF::Black));
+						}
+					}
+				}
+
+				RenderTargetFailure StopRenderingAndPresent(INativeWindow* window)override
+				{
+					if (auto listener = GetNativeWindowListener(window))
+					{
+						listener->StopRendering();
+						bool moved = listener->RetrieveAndResetMovedWhileRendering();
+
+						if (auto renderTarget = listener->GetDirect2DRenderTarget())
+						{
+							HRESULT hr = renderTarget->EndDraw();
+							if (hr == S_OK)
+							{
+								if (moved)
+								{
+									return RenderTargetFailure::ResizeWhileRendering;
+								}
+								else if (listener->PresentRenderTarget())
+								{
+									return RenderTargetFailure::None;
+								}
+							}
+						}
+					}
+					return RenderTargetFailure::LostDevice;
+				}
+
+				ID2D1Factory* GetDirect2DFactory()override
 				{
 					return vl::presentation::windows::GetDirect2DFactory();
 				}
 
-				IDWriteFactory* GetDirectWriteFactory()
+				IDWriteFactory* GetDirectWriteFactory()override
 				{
 					return vl::presentation::windows::GetDirectWriteFactory();
 				}
 
-				IWindowsDirect2DRenderTarget* GetBindedRenderTarget(INativeWindow* window)
+				IWindowsDirect2DRenderTarget* GetBindedRenderTarget(INativeWindow* window)override
 				{
 					return dynamic_cast<IWindowsDirect2DRenderTarget*>(vl::presentation::windows::GetWindowsForm(window)->GetGraphicsHandler());
 				}
 
-				void SetBindedRenderTarget(INativeWindow* window, IWindowsDirect2DRenderTarget* renderTarget)
+				void SetBindedRenderTarget(INativeWindow* window, IWindowsDirect2DRenderTarget* renderTarget)override
 				{
 					vl::presentation::windows::GetWindowsForm(window)->SetGraphicsHandler(renderTarget);
 				}
 
-				IWICImagingFactory* GetWICImagingFactory()
+				IWICImagingFactory* GetWICImagingFactory()override
 				{
 					return vl::presentation::windows::GetWICImagingFactory();
 				}
 
-				IWICBitmap* GetWICBitmap(INativeImageFrame* frame)
+				IWICBitmap* GetWICBitmap(INativeImageFrame* frame)override
 				{
 					return vl::presentation::windows::GetWICBitmap(frame);
 				}
@@ -9778,10 +9843,10 @@ WindowsGDIRenderTarget
 					dc=GetWindowsGDIObjectProvider()->GetNativeWindowDC(window);
 				}
 
-				bool StopRendering()override
+				RenderTargetFailure StopRendering()override
 				{
 					dc = 0;
-					return true;
+					return RenderTargetFailure::None;
 				}
 
 				void PushClipper(Rect clipper)override
@@ -10053,6 +10118,10 @@ WindowsGDIResourceManager
 				{
 				}
 
+				void ResizeRenderTarget(INativeWindow* window)override
+				{
+				}
+
 				IGuiGraphicsLayoutProvider* GetLayoutProvider()override
 				{
 					return layoutProvider.Obj();
@@ -13051,9 +13120,9 @@ WindowsDirect2DRenderTarget
 				typedef SortedList<Ptr<WindowsDirect2DImageFrameCache>> ImageCacheList;
 			protected:
 				INativeWindow*					window;
-				ID2D1RenderTarget*				d2dRenderTarget;
+				ID2D1RenderTarget*				d2dRenderTarget = nullptr;
 				List<Rect>						clippers;
-				vint							clipperCoverWholeTargetCounter;
+				vint							clipperCoverWholeTargetCounter = 0;
 
 				CachedSolidBrushAllocator		solidBrushes;
 				CachedLinearBrushAllocator		linearBrushes;
@@ -13089,8 +13158,6 @@ WindowsDirect2DRenderTarget
 			public:
 				WindowsDirect2DRenderTarget(INativeWindow* _window)
 					:window(_window)
-					,d2dRenderTarget(0)
-					,clipperCoverWholeTargetCounter(0)
 				{
 					solidBrushes.SetRenderTarget(this);
 					linearBrushes.SetRenderTarget(this);
@@ -13173,20 +13240,17 @@ WindowsDirect2DRenderTarget
 				void StartRendering()override
 				{
 					d2dRenderTarget = GetWindowsDirect2DObjectProvider()->GetNativeWindowDirect2DRenderTarget(window);
-					d2dRenderTarget->BeginDraw();
-					d2dRenderTarget->Clear(D2D1::ColorF(D2D1::ColorF::Black));
+					CHECK_ERROR(d2dRenderTarget, L"vl::presentation::elements_windows_d2d::WindowsDirect2DRenderTarget::StartRendering()#Invalid render target.");
+
+					GetWindowsDirect2DObjectProvider()->StartRendering(window);
 				}
 
-				bool StopRendering()override
+				RenderTargetFailure StopRendering()override
 				{
-					auto result = d2dRenderTarget->EndDraw();
-					bool deviceAvailable = false;
-					if (result == S_OK)
-					{
-						deviceAvailable = GetWindowsDirect2DObjectProvider()->PresentRenderTarget(window);
-					}
-					d2dRenderTarget = 0;
-					return deviceAvailable;
+					CHECK_ERROR(d2dRenderTarget, L"vl::presentation::elements_windows_d2d::WindowsDirect2DRenderTarget::StartRendering()#Invalid render target.");
+					auto result = GetWindowsDirect2DObjectProvider()->StopRenderingAndPresent(window);
+					d2dRenderTarget = nullptr;
+					return result;
 				}
 
 				void PushClipper(Rect clipper)override
@@ -13301,6 +13365,11 @@ WindowsGDIResourceManager
 					NativeWindowCreated(window);
 				}
 
+				void ResizeRenderTarget(INativeWindow* window)
+				{
+					GetWindowsDirect2DObjectProvider()->ResizeRenderTarget(window);
+				}
+
 				IGuiGraphicsLayoutProvider* GetLayoutProvider()override
 				{
 					return layoutProvider.Obj();

Import/GacUIWindows.h

@@ -650,9 +650,6 @@ namespace vl
 	{
 		namespace windows
 		{
-			extern ID2D1RenderTarget*					GetNativeWindowDirect2DRenderTarget(INativeWindow* window);
-			extern void									RecreateNativeWindowDirect2DRenderTarget(INativeWindow* window);
-			extern bool									PresentNativeWindowDirect2DRenderTarget(INativeWindow* window);
 			extern ID2D1Factory*						GetDirect2DFactory();
 			extern IDWriteFactory*						GetDirectWriteFactory();
 			extern ID3D11Device*						GetD3D11Device();
@@ -1935,15 +1932,18 @@ OS Supporting
 			class IWindowsDirect2DObjectProvider : public Interface
 			{
 			public:
-				virtual void								RecreateRenderTarget(INativeWindow* window)=0;
-				virtual bool								PresentRenderTarget(INativeWindow* window)=0;
-				virtual ID2D1RenderTarget*					GetNativeWindowDirect2DRenderTarget(INativeWindow* window)=0;
-				virtual ID2D1Factory*						GetDirect2DFactory()=0;
-				virtual IDWriteFactory*						GetDirectWriteFactory()=0;
-				virtual IWindowsDirect2DRenderTarget*		GetBindedRenderTarget(INativeWindow* window)=0;
-				virtual void								SetBindedRenderTarget(INativeWindow* window, IWindowsDirect2DRenderTarget* renderTarget)=0;
-				virtual IWICImagingFactory*					GetWICImagingFactory()=0;
-				virtual IWICBitmap*							GetWICBitmap(INativeImageFrame* frame)=0;
+				virtual void								RecreateRenderTarget(INativeWindow* window) = 0;
+				virtual void								ResizeRenderTarget(INativeWindow* window) = 0;
+				virtual ID2D1RenderTarget*					GetNativeWindowDirect2DRenderTarget(INativeWindow* window) = 0;
+				virtual void								StartRendering(INativeWindow* window) = 0;
+				virtual elements::RenderTargetFailure		StopRenderingAndPresent(INativeWindow* window) = 0;
+
+				virtual ID2D1Factory*						GetDirect2DFactory() = 0;
+				virtual IDWriteFactory*						GetDirectWriteFactory() = 0;
+				virtual IWindowsDirect2DRenderTarget*		GetBindedRenderTarget(INativeWindow* window) = 0;
+				virtual void								SetBindedRenderTarget(INativeWindow* window, IWindowsDirect2DRenderTarget* renderTarget) = 0;
+				virtual IWICImagingFactory*					GetWICImagingFactory() = 0;
+				virtual IWICBitmap*							GetWICBitmap(INativeImageFrame* frame) = 0;
 			};
 
 			extern IWindowsDirect2DObjectProvider*			GetWindowsDirect2DObjectProvider();