X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fscreen.h;h=bdadd8e9ad84326d5b37d61bf83e340ff7311ae8;hp=aed042d51ae345b6b0cdd05d8e65c7cccdcb2e8a;hb=f0b6c9b6b95fde134927c395afbfbbbc057868e6;hpb=d9c0c3792133f87cd224dc22be428be8ddc016d8

diff --git a/src/screen.h b/src/screen.h
index aed042d..bdadd8e 100644
--- a/src/screen.h
+++ b/src/screen.h
@@ -18,7 +18,7 @@ namespace IPDF
 	class Screen
 	{
 	public:
-		Screen();
+		Screen(bool visible = true);
 		~Screen();
 
 		// 'Pumps' the system event queue.
@@ -75,6 +75,8 @@ namespace IPDF
 		
 		void ShowDebugFont(bool show = true) {m_show_debug_font = show;}
 		bool DebugFontShown() const {return m_show_debug_font;}
+
+		bool Valid() const {return m_window != NULL;}
 	private:
 		void ResizeViewport(int width, int height);
 		void DebugFontFlush();