adding an autorelease capability (got weird crashes when deleting tools from a toolbar otherwise)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43893 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/app.h

@@ -75,6 +75,10 @@ public:
     void MacSetCurrentEvent( WXEVENTREF event , WXEVENTHANDLERCALLREF handler )
     { m_macCurrentEvent = event ; m_macCurrentEventHandlerCallRef = handler ; }
 
+    // adding a CFType object to be released only at the end of the current event cycle (increases the
+    // refcount of the object passed), needed in case we are in the middle of an event concering an object
+    // we want to delete and cannot do it immediately
+    void                  MacAddToAutorelease( void* cfrefobj );
 public:
     static wxWindow*      s_captureWindow ;
     static long           s_lastModifiers ;

src/mac/carbon/app.cpp

@@ -1231,6 +1231,14 @@ void wxApp::MacHandleUnhandledEvent( WXEVENTREF evr )
     // Override to process unhandled events as you please
 }
 
+CFMutableArrayRef GetAutoReleaseArray()
+{
+    static CFMutableArrayRef array = 0;
+    if ( array == 0)
+        array= CFArrayCreateMutable(kCFAllocatorDefault,0,&kCFTypeArrayCallBacks);
+    return array;
+}
+
 void wxApp::MacHandleOneEvent( WXEVENTREF evr )
 {
     EventTargetRef theTarget;
@@ -1246,6 +1254,13 @@ void wxApp::MacHandleOneEvent( WXEVENTREF evr )
 #if wxUSE_THREADS
     wxMutexGuiLeaveOrEnter();
 #endif // wxUSE_THREADS
+
+    CFArrayRemoveAllValues( GetAutoReleaseArray() );
+}
+
+void wxApp::MacAddToAutorelease( void* cfrefobj )
+{
+    CFArrayAppendValue( GetAutoReleaseArray(), cfrefobj );
 }
 
 long wxMacTranslateKey(unsigned char key, unsigned char code)