Fix memory leak when a spacer is added, and crash when a window is added before wxSiz...

[wxWidgets.git] / src / gtk1 / timer.cpp

diff --git a/src/gtk1/timer.cpp b/src/gtk1/timer.cpp
index f8531ba81c3ffe82d0142ec5c83ef1a20080cd9b..e004d2d4bea293908db6fb21824c1f23a1ead528 100644 (file)
--- a/src/gtk1/timer.cpp
+++ b/src/gtk1/timer.cpp
@@ -8,11 +8,12 @@
 /////////////////////////////////////////////////////////////////////////////
 
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma implementation "timer.h"
 #endif
 
-#include "wx/defs.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
 #if wxUSE_TIMER
 
@@ -24,27 +25,37 @@
 // wxTimer
 // ----------------------------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject)
+IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler)
 
+extern "C" {
 static gint timeout_callback( gpointer data )
 {
     wxTimer *timer = (wxTimer*)data;
 
-    /* when getting called from GDK's timer handler we
-       are no longer within GDK's grab on the GUI
-       thread so we must lock it here ourselves */
+    // Don't change the order of anything in this callback!
+    
+    if (timer->IsOneShot())
+    {
+        // This sets m_tag to -1
+        timer->Stop();
+    }
+    
+    // When getting called from GDK's timer handler we
+    // are no longer within GDK's grab on the GUI
+    // thread so we must lock it here ourselves.
     gdk_threads_enter();
 
     timer->Notify();
 
-    /* release lock again */
+    // Release lock again.
     gdk_threads_leave();
 
-    if ( timer->IsOneShot() )
+    if (timer->IsOneShot())
         return FALSE;
 
     return TRUE;
 }
+}
 
 void wxTimer::Init()
 {
@@ -61,6 +72,9 @@ bool wxTimer::Start( int millisecs, bool oneShot )
 {
     (void)wxTimerBase::Start(millisecs, oneShot);
 
+    if (m_tag != -1)
+        gtk_timeout_remove( m_tag );
+
     m_tag = gtk_timeout_add( m_milli, timeout_callback, this );
 
     return TRUE;