From c913f00d21e59c77fc0d556e726eeae642b6444a Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 1 Jun 2007 21:28:18 +0000
Subject: [PATCH] From Michael Hartman, "CMakeLists.txt:

   Changed this back to setup_example since WIN32 flag is now supported.



MFC_OSG.h:

   Added flag to indicate when the rendering thread has exited.



MFC_OSG.cpp:

   Code modifications to support rendering flag thread exit.



MFC_OSG_MDIView.cpp:

   Change to OnDestroy function to wait until we get render thread exit flag is true before we close the window.





Main Exit Process:

   User presses escape button

   Viewer captures escape button and stops threading etc.

   Viewer sets Done when shutdown is complete

   MFC Render Thread monitors viewer->done for true

   MFC Render Thread exits while loop and sets MFC Done flag

   MFC View Window monitors MFC Done flag and then closes/destroys the window

"
---
 examples/osgviewerMFC/CMakeLists.txt      | 29 ++---------------------
 examples/osgviewerMFC/MFC_OSG.cpp         |  5 +++-
 examples/osgviewerMFC/MFC_OSG.h           |  3 +++
 examples/osgviewerMFC/MFC_OSG_MDIView.cpp |  8 +++----
 4 files changed, 12 insertions(+), 33 deletions(-)

diff --git a/examples/osgviewerMFC/CMakeLists.txt b/examples/osgviewerMFC/CMakeLists.txt
index 238f38a46..06e0b3dc7 100644
--- a/examples/osgviewerMFC/CMakeLists.txt
+++ b/examples/osgviewerMFC/CMakeLists.txt
@@ -2,32 +2,7 @@ SET(TARGET_SRC MFC_OSG_MDI.cpp MFC_OSG_MDI.rc MFC_OSG_MDIDoc.cpp MFC_OSG_MDIView
 SET(TARGET_H   MFC_OSG_MDI.h   MFC_OSG_MDIDoc.h   MFC_OSG_MDIView.h   stdafx.h   MFC_OSG.h   MainFrm.h   ChildFrm.h Resource.h)
 
 ADD_DEFINITIONS(-D_AFXDLL)
-SET(CMAKE_MFC_FLAG 2)
+SET(REQUIRE_WINMAIN_FLAG 1)
           
 #### end var setup  ###
-#SETUP_EXAMPLE(osgviewerMFC)
-
-#
-#Extracted from SETUP_EXAMPLES
-#
-SET(TARGET_NAME osgviewerMFC)
-
-#
-#Extracted from SETUP_EXE
-#
-IF(NOT TARGET_TARGETNAME)
-   SET(TARGET_TARGETNAME "${TARGET_DEFAULT_PREFIX}${TARGET_NAME}")
-ENDIF(NOT TARGET_TARGETNAME)
-IF(NOT TARGET_LABEL)
-   SET(TARGET_LABEL "${TARGET_DEFAULT_LABEL_PREFIX} ${TARGET_NAME}")
-ENDIF(NOT TARGET_LABEL)
-
-# This is the important line because it adds WIN32 which tells CMake that this is an MFC/Windows appliation
-# and not a console application
-ADD_EXECUTABLE(${TARGET_TARGETNAME} WIN32 ${TARGET_SRC} ${TARGET_H})
-
-SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES PROJECT_LABEL "${TARGET_LABEL}")
-SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
-SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES OUTPUT_NAME ${TARGET_NAME})
-
-SETUP_LINK_LIBRARIES() 
+SETUP_EXAMPLE(osgviewerMFC)
diff --git a/examples/osgviewerMFC/MFC_OSG.cpp b/examples/osgviewerMFC/MFC_OSG.cpp
index e8111d9f5..f68b74464 100644
--- a/examples/osgviewerMFC/MFC_OSG.cpp
+++ b/examples/osgviewerMFC/MFC_OSG.cpp
@@ -5,7 +5,7 @@
 
 
 cOSG::cOSG(HWND hWnd) :
-   m_hWnd(hWnd)
+   m_hWnd(hWnd), mDone(false) 
 {
     //
     // We must set the pixelformat before we can create the OSG Rendering Surface
@@ -182,4 +182,7 @@ void cOSG::Render(void* ptr)
     // if you have multiple OSG windows up 
     // and you exit one then all stop rendering
     AfxMessageBox("Exit Rendering Thread");
+
+    // Set Done to indicate that thread has exited
+    osg->Done(true);
 }
diff --git a/examples/osgviewerMFC/MFC_OSG.h b/examples/osgviewerMFC/MFC_OSG.h
index cd7779cec..ead1a4bcf 100644
--- a/examples/osgviewerMFC/MFC_OSG.h
+++ b/examples/osgviewerMFC/MFC_OSG.h
@@ -25,11 +25,14 @@ public:
     void SetupCamera(void);
     void PreFrameUpdate(void);
     void PostFrameUpdate(void);
+    void Done(bool value) { mDone = value; }
+    bool Done(void) { return mDone; }
     static void Render(void* ptr);
 
     osgViewer::Viewer* getViewer() { return mViewer.get(); }
 
 private:
+    bool mDone;
     std::string m_ModelName;
     HWND m_hWnd;
     osg::ref_ptr<osgViewer::Viewer> mViewer;
diff --git a/examples/osgviewerMFC/MFC_OSG_MDIView.cpp b/examples/osgviewerMFC/MFC_OSG_MDIView.cpp
index de9b2b5d5..8810ef464 100644
--- a/examples/osgviewerMFC/MFC_OSG_MDIView.cpp
+++ b/examples/osgviewerMFC/MFC_OSG_MDIView.cpp
@@ -77,13 +77,11 @@ void CMFC_OSG_MDIView::OnDestroy()
     // Make sure OSG was created before we try to close it.
     if(mOSG)
     {
-        // Force osg Viewer to shut down
-        mOSG->getViewer()->setDone(true);
-        
+       
         // Wait while the Viewer closes
-        while(!mOSG->getViewer()->done())
+        while(!mOSG->Done())
         {
-            Sleep(0); // Allow others processor time
+            Sleep(10); // Allow others processor time
         }
         
         // Remove mOSG