diff --git a/gui_qt/baseformlayer.cpp b/gui_qt/baseformlayer.cpp
index b94aac0..38fb119 100644
--- a/gui_qt/baseformlayer.cpp
+++ b/gui_qt/baseformlayer.cpp
@@ -11,11 +11,26 @@ BaseFormLayer::~BaseFormLayer()
     layersDelete(_layers_modified);
 }
 
+void BaseFormLayer::revertConfig()
+{
+    layersCopy(_layers_original, _layers_modified);
+    layerSelectedEvent(currentLayer());
+    
+    BaseForm::revertConfig();
+}
+
+void BaseFormLayer::applyConfig()
+{
+    layersCopy(_layers_modified, _layers_original);
+    
+    BaseForm::applyConfig();
+}
+
 void BaseFormLayer::configChangeEvent()
 {
-    /*texturesLayerCopyDefinition(&_layer, texturesGetLayer(&_definition, currentLayer()));
+    layerApply(layersGetLayer(_layers_modified, currentLayer()));
+    layersValidate(_layers_modified);
     
-    layersValidate(_layers_modified);*/
     BaseForm::configChangeEvent();
 }
 
@@ -62,7 +77,7 @@ void BaseFormLayer::layerRenamedEvent(int layer, QString new_name)
 
 void BaseFormLayer::layerSelectedEvent(int layer)
 {
-    //texturesLayerCopyDefinition(texturesGetLayer(&_definition, layer), &_layer);
+    layerGetCopy(layersGetLayer(_layers_modified, layer));
     
     BaseForm::layerSelectedEvent(layer);
 }
diff --git a/gui_qt/baseformlayer.h b/gui_qt/baseformlayer.h
index 1b3ce35..8244b63 100644
--- a/gui_qt/baseformlayer.h
+++ b/gui_qt/baseformlayer.h
@@ -14,7 +14,15 @@ public:
     BaseFormLayer(QWidget* parent, Layers* layers);
     ~BaseFormLayer();
 
+public slots:
+    virtual void revertConfig();
+    virtual void applyConfig();
+    
 protected:
+    virtual void layerGetCopy(void* layer_definition) = 0;
+    virtual void layerApply(void* layer_definition) = 0;
+
+private:
     virtual QStringList getLayers();
     virtual void layerAddedEvent();
     virtual void layerDeletedEvent(int layer);
diff --git a/gui_qt/formterraincanvas.cpp b/gui_qt/formterraincanvas.cpp
index cc3d38b..7239bb7 100644
--- a/gui_qt/formterraincanvas.cpp
+++ b/gui_qt/formterraincanvas.cpp
@@ -4,19 +4,32 @@
 FormTerrainCanvas::FormTerrainCanvas(QWidget *parent, Layers* layers):
     BaseFormLayer(parent, layers)
 {
+    _definition = terrainCanvasCreate();
+    
+    // TODO Area
+    addInputDouble(tr("Apply at height"), &_definition->offset_z, -20.0, 20.0, 0.1, 1.0);
+    // TODO Height map
+    addInputDouble(tr("Canvas height"), &_definition->height_factor, 0.0, 20.0, 0.1, 1.0);
+    addInputNoise(tr("Detail noise"), _definition->detail_noise);
+    addInputDouble(tr("Detail noise height"), &_definition->detail_height_factor, 0.0, 20.0, 0.1, 1.0);
+    addInputDouble(tr("Detail noise scaling"), &_definition->detail_scaling, 0.0, 20.0, 0.1, 1.0);
+    // TODO Mask mode
+    // TODO Mask smoothing
+    
+    revertConfig();
 }
 
-void FormTerrainCanvas::revertConfig()
+FormTerrainCanvas::~FormTerrainCanvas()
 {
-    BaseFormLayer::revertConfig();
+    terrainCanvasDelete(_definition);
 }
 
-void FormTerrainCanvas::applyConfig()
+void FormTerrainCanvas::layerGetCopy(void* layer_definition)
 {
-    BaseFormLayer::applyConfig();
+    terrainCanvasCopy((TerrainCanvas*)layer_definition, _definition);
 }
 
-void FormTerrainCanvas::configChangeEvent()
+void FormTerrainCanvas::layerApply(void* layer_definition)
 {
-    BaseFormLayer::configChangeEvent();
+    terrainCanvasCopy(_definition, (TerrainCanvas*)layer_definition);
 }
diff --git a/gui_qt/formterraincanvas.h b/gui_qt/formterraincanvas.h
index 4b8ccde..448199d 100644
--- a/gui_qt/formterraincanvas.h
+++ b/gui_qt/formterraincanvas.h
@@ -4,6 +4,7 @@
 #include <QWidget>
 #include "basepreview.h"
 #include "baseformlayer.h"
+#include "../lib_paysages/terraincanvas.h"
 
 class FormTerrainCanvas : public BaseFormLayer
 {
@@ -11,15 +12,14 @@ class FormTerrainCanvas : public BaseFormLayer
 
 public:
     FormTerrainCanvas(QWidget* parent, Layers* layers);
-
-public slots:
-    virtual void revertConfig();
-    virtual void applyConfig();
-
-protected slots:
-    virtual void configChangeEvent();
+    ~FormTerrainCanvas();
+    
+protected:
+    virtual void layerGetCopy(void* layer_definition);
+    virtual void layerApply(void* layer_definition);
 
 private:
+    TerrainCanvas* _definition;
 //    BasePreview* previewHeight;
 //    BasePreview* previewColor;
 };
diff --git a/gui_qt/inputlayers.cpp b/gui_qt/inputlayers.cpp
index eae813f..e067040 100644
--- a/gui_qt/inputlayers.cpp
+++ b/gui_qt/inputlayers.cpp
@@ -28,5 +28,6 @@ void InputLayers::editLayers()
 {
     if (DialogLayers::editLayers(_control, _value, _label->text(), _form_builder))
     {
+        applyValue();
     }
 }