diff --git a/source/Platform/PlatformDisplay.h b/source/Platform/PlatformDisplay.h
index eaafe28..c1505b6 100644
--- a/source/Platform/PlatformDisplay.h
+++ b/source/Platform/PlatformDisplay.h
@@ -35,6 +35,10 @@ public :
 
 	virtual void setPosition(unsigned int x, unsigned int y) = 0;
 
+	virtual void minimize() = 0;
+
+	virtual void maximize() = 0;
+
 	virtual void setCaption(const std::string& caption) = 0;
 
 	virtual void setIcon(unsigned int width, unsigned int height, const uint8_t *pixels) = 0;