Changed to avoid a compiler warning

febbe828 · Davis King · f246936e · febbe828
Commit febbe828 authored Nov 01, 2012 by Davis King
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dlib/gui_widgets/widgets.h dlib/gui_widgets/widgets.h +2 -2

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--- a/dlib/gui_widgets/widgets.h
+++ b/dlib/gui_widgets/widgets.h
@@ -3281,8 +3281,8 @@ namespace dlib
        }
        virtual void set_size (
-            long width,
+            unsigned long width,
-            long height 
+            unsigned long height 
        )
        {
            auto_mutex lock(m);