cosmetic to MainWindow,

drop does not work for widget,
fixed offset problem,
add esc key

QtMeshViewer/Header/GeometryEngine.h

@@ -25,10 +25,10 @@ private:
 	QVector<QOpenGLTexture*> m_textures;
 	QVector<DrawInformation> m_drawList;
 
-	void loadFile(const char* filePath);
 	void loadTexture(const char* filePath);
 
 public:
+	void loadFile(const char* filePath);
 	void drawGeometry(QOpenGLShaderProgram *program);
 };
 

QtMeshViewer/Header/MainWindow.h

@@ -13,4 +13,10 @@ public:
 
 private:
 	Ui::MainWindowClass* ui;
+
+private slots:
+	void openFile();
+	void aboutFile();
+	void aboutTool();
+
 };

QtMeshViewer/Header/OglViewerWidget.h

@@ -40,6 +40,7 @@ protected:
 	void mouseReleaseEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
 	void mouseMoveEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
 	void wheelEvent(QWheelEvent *e) Q_DECL_OVERRIDE;
+	void dropEvent(QDropEvent * event) Q_DECL_OVERRIDE;
 	void keyPressEvent(QKeyEvent *e) Q_DECL_OVERRIDE;
 
 	void initializeGL() Q_DECL_OVERRIDE;
@@ -49,6 +50,9 @@ protected:
 private:
 	void initShaders();
 
+public:
+	void openFile(const char* filePath);
+
 
 };