diff --git a/CMakeModules/OsgMacroUtils.cmake b/CMakeModules/OsgMacroUtils.cmake
index 33dc40ef3..91d9fa6c7 100644
--- a/CMakeModules/OsgMacroUtils.cmake
+++ b/CMakeModules/OsgMacroUtils.cmake
@@ -152,8 +152,11 @@ MACRO(SETUP_EXE IS_COMMANDLINE_APP)
     ENDIF(NOT TARGET_LABEL)
 
     IF(${IS_COMMANDLINE_APP})
+    
         ADD_EXECUTABLE(${TARGET_TARGETNAME} ${TARGET_SRC} ${TARGET_H})
+        
     ELSE(${IS_COMMANDLINE_APP})
+    
         IF(APPLE)
             # SET(MACOSX_BUNDLE_LONG_VERSION_STRING "${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION}")
             # Short Version is the "marketing version". It is the version
@@ -167,8 +170,13 @@ MACRO(SETUP_EXE IS_COMMANDLINE_APP)
             # SET(MACOSX_BUNDLE_COPYRIGHT "")
             # SET(MACOSX_BUNDLE_INFO_STRING "Info string, localized?")
         ENDIF(APPLE)
+
+        IF(WIN32 AND REQUIRE_WINMAIN_FLAG)        
+            ADD_EXECUTABLE(${TARGET_TARGETNAME} WIN32 ${TARGET_SRC} ${TARGET_H})
+        ELSE(WIN32 AND REQUIRE_WINMAIN_FLAG)        
+            ADD_EXECUTABLE(${TARGET_TARGETNAME} MACOSX_BUNDLE ${TARGET_SRC} ${TARGET_H})
+        ENDIF(WIN32 AND REQUIRE_WINMAIN_FLAG)        
         
-        ADD_EXECUTABLE(${TARGET_TARGETNAME} MACOSX_BUNDLE ${TARGET_SRC} ${TARGET_H})
     ENDIF(${IS_COMMANDLINE_APP})
     SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES PROJECT_LABEL "${TARGET_LABEL}")
     SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
diff --git a/examples/osgsimpleviewerWX/CMakeLists.txt b/examples/osgsimpleviewerWX/CMakeLists.txt
index 2e45c3e34..4fb2b940e 100644
--- a/examples/osgsimpleviewerWX/CMakeLists.txt
+++ b/examples/osgsimpleviewerWX/CMakeLists.txt
@@ -6,6 +6,7 @@ INCLUDE(${wxWidgets_USE_FILE})
 
 #### end var setup  ###
 
-SETUP_EXAMPLE(osgsimpleviewerWX 1)
+SET(REQUIRE_WINMAIN_FLAG ON)
+SETUP_EXAMPLE(osgsimpleviewerWX)
 
 TARGET_LINK_LIBRARIES("${TARGET_DEFAULT_PREFIX}osgsimpleviewerWX" ${wxWidgets_LIBRARIES})