New functions with QT GUI:

- fix CMake OpenGL compilation

CMakeLists.txt

@@ -502,9 +502,16 @@ set(AUTOSWITCH_QT 0)#uses to disable QT
 find_package(Qt4)# QUIET)
 if (QT4_FOUND AND AUTOSWITCH_QT)
     set(WITH_QT ON CACHE BOOL "Build with QT Backend support")
-    find_package (OPENGL QUIET)
+    find_package (OpenGL QUIET)
     if (QT_QTOPENGL_FOUND AND OPENGL_FOUND)
-    set(WITH_QT_OPENGL ON CACHE BOOL "Add OpenGL extention to QT")
+    
+		#GLU is not mandatory but we used gluPerspective in setGL so, we need it for now.
+		if (OPENGL_GLU_FOUND)
+			set(WITH_QT_OPENGL ON CACHE BOOL "Add OpenGL extention to QT")
+		else()
+		    message(STATUS "OpenGL found but not GLU, please install it")
+		endif()
+		
     endif()
 endif()
     
@@ -519,14 +526,16 @@ if (WITH_QT)
 		set(WITH_CARBON 0)
 		message(STATUS "QT detected, so Carbon and Cocoa disabled")
 		else()
+		set(WITH_GTK 0)
 		set(HAVE_GTK 0)
+		set(WITH_GTHREAD 0)
 		set(HAVE_GTHREAD 0)
 		message(STATUS "QT detected, so GTK and GThread disabled")
 		endif()
     endif()
     
     if (WITH_QT_OPENGL)
-    message(STATUS "OpenGL for QT enable")
+    message(STATUS "OpenGL for QT enable (with GLU)")
         set(HAVE_QT_OPENGL 1)
         add_definitions(-DOPENCV_GL=1)
     endif()

modules/highgui/CMakeLists.txt

@@ -72,6 +72,10 @@ if(WIN32)
     if (HAVE_QT)
         
          #SET(QT_USE_QTXML 1)
+         if (HAVE_QT_OPENGL)
+			set( QT_USE_QTOPENGL TRUE )
+			set(HIGHGUI_LIBRARIES ${HIGHGUI_LIBRARIES} ${OPENGL_LIBRARIES})
+         endif()
 		 INCLUDE(${QT_USE_FILE})
 		 
 		 SET(_MOC_HEADERS src/window_QT.h )
@@ -95,6 +99,10 @@ if(UNIX)
     if (HAVE_QT)        
     
          #SET(QT_USE_QTXML 1)
+         if (HAVE_QT_OPENGL)
+			set( QT_USE_QTOPENGL TRUE )
+			set(HIGHGUI_LIBRARIES ${HIGHGUI_LIBRARIES} ${OPENGL_LIBRARIES})
+         endif()
 		 INCLUDE(${QT_USE_FILE})
 		 
 		 SET(_MOC_HEADERS src/window_QT.h)
@@ -188,6 +196,10 @@ if(APPLE)
     if (HAVE_QT)
 
          #SET(QT_USE_QTXML 1)
+         if (HAVE_QT_OPENGL)
+			set( QT_USE_QTOPENGL TRUE )
+			set(HIGHGUI_LIBRARIES ${HIGHGUI_LIBRARIES} ${OPENGL_LIBRARIES})
+         endif()
 		 INCLUDE(${QT_USE_FILE})
 		 
 		 SET(_MOC_HEADERS src/window_QT.h)

modules/highgui/src/window_QT.h

@@ -44,7 +44,9 @@
 #include "precomp.hpp"
 
 #if defined(OPENCV_GL)
-#include <QGLWidget>
+ #include <QtOpenGL>
+ //#include <GL/glu.h>
+//#include <QGLWidget>
 #endif
 
 #include <QAbstractEventDispatcher>