highgui: use forward slash for gl.h include

The backslash causes build failure when cross-compiling with mingw-w64
8 years ago · 678e114e5f
parent a2fed4c790
commit 678e114e5f
1 changed files with 1 additions and 1 deletions
--- a/modules/highgui/src/window_w32.cpp
+++ b/modules/highgui/src/window_w32.cpp
@ -65,7 +65,7 @@
 #include <vector>
 #include <functional>
 #include "opencv2/highgui.hpp"
-#include <GL\gl.h>
+#include <GL/gl.h>
 #endif

 static const char* trackbar_text =