Attempt implement menu (unresolved symbol error)

Button.h

@@ -0,0 +1,21 @@
+#pragma once
+#include "MenuElement.h"
+
+class Button : public MenuElement
+{
+private:
+	std::string text;
+	float width, height;
+	Vec3f foreground;
+	Vec3f background;
+public:
+	Button(std::string &text, Vec2f position, float width, float height);
+	~Button();
+
+	void draw(void);
+	void update(int x, int y);
+
+	void setForeground(Vec3f color);
+	void setBackground(Vec3f color);
+};
+