19 files changed, 18 insertions, 1 deletions

diff --git a/Gem/Gem.pd_darwin b/Gem/Gem.pd_darwin
index bf93c79..7ddeeed 100755
--- a/Gem/Gem.pd_darwin
+++ b/Gem/Gem.pd_darwin
diff --git a/Gem/develop/include/Gem/Base/CPPExtern.h b/Gem/develop/include/Gem/Base/CPPExtern.h
index 0350681..ddacc54 100644
--- a/Gem/develop/include/Gem/Base/CPPExtern.h
+++ b/Gem/develop/include/Gem/Base/CPPExtern.h
@@ -122,6 +122,12 @@ class GEM_EXTERN CPPExtern
     	// Creation callback
     	static void 	real_obj_setupCallback(t_class *) {}
 
+	///////////
+	// called directly before the destructor
+	// normally you should not override this (use the dtor!)
+	// if you do override this, make sure that you call the parent as well
+	virtual void beforeDeletion();
+
     private:
 
       //////////
@@ -157,7 +163,9 @@ class GEM_EXTERN CPPExtern
 #define CPPEXTERN_HEADER(NEW_CLASS, PARENT_CLASS)    	    	\
 public:     	    	    	    	    	    	    	\
 static void obj_freeCallback(void *data)    	    	    	\
-{ CPPExtern *mydata = ((Obj_header *)data)->data; delete mydata; \
+{ CPPExtern *mydata = ((Obj_header *)data)->data;		\
+  GetMyClass(data)->beforeDeletion();				\
+  delete mydata;						\
   ((Obj_header *)data)->Obj_header::~Obj_header(); }   	    	\
 static void real_obj_setupCallback(t_class *classPtr)  	    	\
 { PARENT_CLASS::real_obj_setupCallback(classPtr);    	    	\
diff --git a/Gem/develop/include/Gem/Base/GemBase.h b/Gem/develop/include/Gem/Base/GemBase.h
index 09e6a8f..9b0d362 100644
--- a/Gem/develop/include/Gem/Base/GemBase.h
+++ b/Gem/develop/include/Gem/Base/GemBase.h
@@ -128,6 +128,8 @@ class GEM_EXTERN GemBase : public CPPExtern
 
  protected:
   enum RenderState getState(void);
+
+  virtual void beforeDeletion(void);
 };
 
 #endif	// for header file
diff --git a/Gem/develop/include/Gem/Base/GemWindow.h b/Gem/develop/include/Gem/Base/GemWindow.h
index c5105c4..18ad28f 100644
--- a/Gem/develop/include/Gem/Base/GemWindow.h
+++ b/Gem/develop/include/Gem/Base/GemWindow.h
@@ -30,6 +30,7 @@ DESCRIPTION
 namespace gem {
   class Context;
 };
+class GemBase;
 
 class GEM_EXTERN GemWindow : public CPPExtern
 {
@@ -86,6 +87,12 @@ class GEM_EXTERN GemWindow : public CPPExtern
    */
   static gem::Context*destroyContext(gem::Context*);
 
+  /*
+   * call stopRendering() of a given objects for all valid contexts
+   * (this will make each context current, call obj->stopRendering and switch back to the original context)
+   */
+  static void stopInAllContexts(GemBase*obj);
+
   /* this MUST be called from the derived classes
    * as it will eventually establish a new GemContext (if m_context is non-NULL)
    * if you want to share GemContext's you MUST call
diff --git a/Gem/gem_filmAVFoundation.so b/Gem/gem_filmAVFoundation.so
index 4b17cae..448929c 100755
--- a/Gem/gem_filmAVFoundation.so
+++ b/Gem/gem_filmAVFoundation.so
diff --git a/Gem/gem_imageJPEG.so b/Gem/gem_imageJPEG.so
index e965983..f3b899e 100755
--- a/Gem/gem_imageJPEG.so
+++ b/Gem/gem_imageJPEG.so
diff --git a/Gem/gem_imageMAGICK.so b/Gem/gem_imageMAGICK.so
index 76d53f9..147eca4 100755
--- a/Gem/gem_imageMAGICK.so
+++ b/Gem/gem_imageMAGICK.so
diff --git a/Gem/gem_imageSGI.so b/Gem/gem_imageSGI.so
index a272c77..4fb12fd 100755
--- a/Gem/gem_imageSGI.so
+++ b/Gem/gem_imageSGI.so
diff --git a/Gem/gem_imageTIFF.so b/Gem/gem_imageTIFF.so
index e5adbc8..2193e80 100755
--- a/Gem/gem_imageTIFF.so
+++ b/Gem/gem_imageTIFF.so
diff --git a/Gem/gem_modelOBJ.so b/Gem/gem_modelOBJ.so
index 622de1e..f5ce607 100755
--- a/Gem/gem_modelOBJ.so
+++ b/Gem/gem_modelOBJ.so
diff --git a/Gem/gemcocoawindow.pd_darwin b/Gem/gemcocoawindow.pd_darwin
index 7ff85f5..e5eac2c 100755
--- a/Gem/gemcocoawindow.pd_darwin
+++ b/Gem/gemcocoawindow.pd_darwin
diff --git a/Gem/gemglfw2window.pd_darwin b/Gem/gemglfw2window.pd_darwin
index 0192a9e..408f706 100755
--- a/Gem/gemglfw2window.pd_darwin
+++ b/Gem/gemglfw2window.pd_darwin
diff --git a/Gem/gemglfw3window.pd_darwin b/Gem/gemglfw3window.pd_darwin
index b7d6f7b..227036b 100755
--- a/Gem/gemglfw3window.pd_darwin
+++ b/Gem/gemglfw3window.pd_darwin
diff --git a/Gem/gemglutwindow.pd_darwin b/Gem/gemglutwindow.pd_darwin
index 0c99f42..b13c2fc 100755
--- a/Gem/gemglutwindow.pd_darwin
+++ b/Gem/gemglutwindow.pd_darwin
diff --git a/Gem/gemsdlwindow.pd_darwin b/Gem/gemsdlwindow.pd_darwin
index 7ca36ba..88456e8 100755
--- a/Gem/gemsdlwindow.pd_darwin
+++ b/Gem/gemsdlwindow.pd_darwin
diff --git a/Gem/pix_drum.pd_darwin b/Gem/pix_drum.pd_darwin
index 07e8b76..29d04aa 100755
--- a/Gem/pix_drum.pd_darwin
+++ b/Gem/pix_drum.pd_darwin
diff --git a/Gem/pix_fiducialtrack.pd_darwin b/Gem/pix_fiducialtrack.pd_darwin
index 4fc3984..b788411 100755
--- a/Gem/pix_fiducialtrack.pd_darwin
+++ b/Gem/pix_fiducialtrack.pd_darwin
diff --git a/Gem/pix_hit.pd_darwin b/Gem/pix_hit.pd_darwin
index 99596e7..59f57f3 100755
--- a/Gem/pix_hit.pd_darwin
+++ b/Gem/pix_hit.pd_darwin
diff --git a/Gem/pix_mano.pd_darwin b/Gem/pix_mano.pd_darwin
index f99fc68..4ec5150 100755
--- a/Gem/pix_mano.pd_darwin
+++ b/Gem/pix_mano.pd_darwin