diff --git a/inc/hgl/gui/ThemeEngine.h b/inc/hgl/gui/ThemeEngine.h
index f0d35d53..24b2afab 100644
--- a/inc/hgl/gui/ThemeEngine.h
+++ b/inc/hgl/gui/ThemeEngine.h
@@ -27,7 +27,7 @@ namespace hgl
 
         protected:
 
-            virtual bool ThemeRender(Form *)=0;
+            virtual ThemeForm *CreateForm(Form *,RenderTarget *,RenderCommand *)=0;
 
         public:
 
@@ -40,7 +40,7 @@ namespace hgl
             virtual bool Registry(Form *,const VkFormat format=DefaultRenderTargetFormat);
             virtual void Unregistry(Form *);
             virtual bool Resize(Form *,const uint32_t,const uint32_t,const VkFormat format=DefaultRenderTargetFormat);
-            virtual void Render(Form *);
+            virtual bool Render(Form *);
         };//class ThemeEngine
 
 //        ThemeEngine *CreateThemeEngine();                   
diff --git a/inc/hgl/gui/ThemeForm.h b/inc/hgl/gui/ThemeForm.h
index 7b2cd6ac..68ec7b2b 100644
--- a/inc/hgl/gui/ThemeForm.h
+++ b/inc/hgl/gui/ThemeForm.h
@@ -15,11 +15,13 @@ namespace hgl
         protected:
         
             Form *form;
+
             RenderTarget *render_target;
+            RenderCommand *cmd_buf;
 
         public:
 
-            ThemeForm(Form *,RenderTarget *);
+            ThemeForm(Form *,RenderTarget *,RenderCommand *);
             virtual ~ThemeForm();
 
             RenderTarget *  GetRenderTarget(){return render_target;}
@@ -27,7 +29,8 @@ namespace hgl
 
             void            Resize(uint w,uint h);
 
-
+            bool            BeginRender();
+            bool            EndRender();
         };//class ThemeForm
     }//namespace gui
 }//namespace hgl
diff --git a/src/GUI/DefaultThemeEngine.cpp b/src/GUI/DefaultThemeEngine.cpp
index bf9556ec..aa652159 100644
--- a/src/GUI/DefaultThemeEngine.cpp
+++ b/src/GUI/DefaultThemeEngine.cpp
@@ -20,23 +20,9 @@ namespace hgl
             {
             }
 
-            bool DefaultThemeEngine::Registry(Form *f)
-            {
-                if(!f)return(false);
-                if(form_list.KeyExist(f))return(false);
-
-            
-                return(true);
-            }
-
-            void DefaultThemeEngine::Unregistry(Form *f)
-            {
-                if(!f)return;
-                if(!form_list.KeyExist(f))return;
-            }
-        
-            void DefaultThemeEngine::Render(Form *f)
+            ThemeForm *DefaultThemeEngine::CreateForm(Form *f,RenderTarget *rt,RenderCommand *rc)
             {
+                return(new DTForm(f,rt,rc));
             }
         }//namespace default_theme
     }//namespace gui
diff --git a/src/GUI/DefaultThemeEngine.h b/src/GUI/DefaultThemeEngine.h
index 81567599..d2042f83 100644
--- a/src/GUI/DefaultThemeEngine.h
+++ b/src/GUI/DefaultThemeEngine.h
@@ -20,22 +20,15 @@ namespace hgl
              */
             class DefaultThemeEngine:public ThemeEngine
             {
-
-                //struct
-                //{
-                //    Material *          m;
-                //    MaterialInstance *  mi;
-                //}panel;
-
             public:
 
-                DefaultThemeEngine(GPUDevice *dev):ThemeEngine(dev){}
+                using ThemeEngine::ThemeEngine;
                 virtual ~DefaultThemeEngine() override;
 
                 bool Init() override;
                 void Clear() override;
                 
-                bool ThemeRender(Form *) override;
+                ThemeForm *CreateForm(Form *,RenderTarget *,RenderCommand *) override;
             };//class DefaultThemeEngine:public ThemeEngine
         }//namespace default_theme
     }//namespace gui
diff --git a/src/GUI/ThemeEngine.cpp b/src/GUI/ThemeEngine.cpp
index d5fb4c45..9130dae9 100644
--- a/src/GUI/ThemeEngine.cpp
+++ b/src/GUI/ThemeEngine.cpp
@@ -32,7 +32,9 @@ namespace hgl
             const uint width=power_to_2(w);
             const uint height=power_to_2(h);
 
-            return device->CreateColorRenderTarget(width,height,format);
+            FramebufferInfo fbi(format,w,h);
+
+            return device->CreateRenderTarget(&fbi);
         }
         
         bool ThemeEngine::Registry(Form *f,const VkFormat format)
@@ -47,8 +49,8 @@ namespace hgl
             RenderTarget *rt=CreateRenderTarget(size.x,size.y,format);
 
             if(!rt)return(false);
-
-            ThemeForm *tf=new ThemeForm(f,rt);
+            
+            ThemeForm *tf=CreateForm(f,rt);
 
             form_list.Add(f,tf);
 
@@ -103,12 +105,24 @@ namespace hgl
             tf->Resize(w,h);
             return(true);
         }
-
-        void ThemeEngine::Render(Form *f)
+        
+        bool ThemeEngine::Render(Form *f)
         {
-            if(!f)return;
+            if(!f)return(false);
 
+            const Vector2f &size=f->GetSize();
+
+            if(size.x==0&&size.y==0)return(false);
             
+            ThemeForm *tf;
+
+            if(!form_list.Get(f,tf))
+                return(false);
+
+            tf->BeginRender();
+
+
+            tf->EndRender();
         }
     }//namespace gui
 }//namespace hgl
\ No newline at end of file
diff --git a/src/GUI/ThemeForm.cpp b/src/GUI/ThemeForm.cpp
index b8da9a08..74a35500 100644
--- a/src/GUI/ThemeForm.cpp
+++ b/src/GUI/ThemeForm.cpp
@@ -1,17 +1,21 @@
 #include<hgl/gui/ThemeForm.h>
+#include<hgl/graph/VKCommandBuffer.h>
 
 namespace hgl
 {
     namespace gui
     {
-        ThemeForm::ThemeForm(Form *f,RenderTarget *rt)
+        ThemeForm::ThemeForm(Form *f,RenderTarget *rt,RenderCommand *rc)
         {
             form=f;
-            render_target=rt;                
+            render_target=rt;
+            cmd_buf=rc;
         }
         
         ThemeForm::~ThemeForm()
         {
+            delete cmd_buf;
+            delete render_target;
         }
 
         bool ThemeForm::SetRenderTarget(RenderTarget *rt)
@@ -29,5 +33,25 @@ namespace hgl
         {
             form->OnResize(w,h);
         }
+        
+        bool ThemeForm::BeginRender()
+        {
+            if(!cmd_buf->Begin())return(false);
+            if(!cmd_buf->BindFramebuffer(render_target->GetRenderPass(),render_target->GetFramebuffer()))return(false);
+
+            cmd_buf->SetClearColor(0,0,0,0,1.0f);
+
+            return(true);
+        }
+        
+        bool ThemeForm::EndRender()
+        {
+            if(!cmd_buf->End())return(false);
+
+            if(!render_target->Submit(cmd_buf))return(false);
+            if(!render_target->WaitQueue())return(false);
+
+            return(true);
+        }
     }//namespace gui
 }//namespace hgl