X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/49c9d05986415e8f4f2139f112d7a320b48c07e8..0bbe61b8c18a1795189f0cf73cc61c14a0fb846d:/src/common/toplvcmn.cpp

diff --git a/src/common/toplvcmn.cpp b/src/common/toplvcmn.cpp
index e72953cf7e..bcfd529105 100644
--- a/src/common/toplvcmn.cpp
+++ b/src/common/toplvcmn.cpp
@@ -40,8 +40,11 @@ BEGIN_EVENT_TABLE(wxTopLevelWindowBase, wxWindow)
     EVT_CLOSE(wxTopLevelWindowBase::OnCloseWindow)
     EVT_SIZE(wxTopLevelWindowBase::OnSize)
     EVT_WINDOW_DESTROY(wxTopLevelWindowBase::OnChildDestroy)
+    WX_EVENT_TABLE_CONTROL_CONTAINER(wxTopLevelWindowBase)
 END_EVENT_TABLE()
 
+WX_DELEGATE_TO_CONTROL_CONTAINER(wxTopLevelWindowBase, wxWindow)
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -56,18 +59,51 @@ wxTopLevelWindowBase::wxTopLevelWindowBase()
 {
     // Unlike windows, top level windows are created hidden by default.
     m_isShown = false;
-    m_winDefault = NULL;
+    m_winDefault =
     m_winTmpDefault = NULL;
+
+    WX_INIT_CONTROL_CONTAINER();
 }
 
 wxTopLevelWindowBase::~wxTopLevelWindowBase()
 {
+    m_winDefault =
+    m_winTmpDefault = NULL;
+
     // don't let wxTheApp keep any stale pointers to us
     if ( wxTheApp && wxTheApp->GetTopWindow() == this )
         wxTheApp->SetTopWindow(NULL);
 
     wxTopLevelWindows.DeleteObject(this);
 
+    // delete any our top level children which are still pending for deletion
+    // immediately: this could happen if a child (e.g. a temporary dialog
+    // created with this window as parent) was Destroy()'d) while this window
+    // was deleted directly (with delete, or maybe just because it was created
+    // on the stack) immediately afterwards and before the child TLW was really
+    // destroyed -- not destroying it now would leave it alive with a dangling
+    // parent pointer and result in a crash later
+    for ( wxObjectList::iterator i = wxPendingDelete.begin();
+          i != wxPendingDelete.end();
+          )
+    {
+        wxWindow * const win = wxDynamicCast(*i, wxWindow);
+        if ( win && win->GetParent() == this )
+        {
+            wxPendingDelete.erase(i);
+
+            delete win;
+
+            // deleting it invalidated the list (and not only one node because
+            // it could have resulted in deletion of other objects to)
+            i = wxPendingDelete.begin();
+        }
+        else
+        {
+            ++i;
+        }
+    }
+
     if ( IsLastBeforeExit() )
     {
         // no other (important) windows left, quit the app
@@ -82,15 +118,26 @@ bool wxTopLevelWindowBase::Destroy()
     if ( !wxPendingDelete.Member(this) )
         wxPendingDelete.Append(this);
 
-    if (wxTopLevelWindows.GetCount() > 1)
+    // normally we want to hide the window immediately so that it doesn't get
+    // stuck on the screen while it's being destroyed, however we shouldn't
+    // hide the last visible window as then we might not get any idle events
+    // any more as no events will be sent to the hidden window and without idle
+    // events we won't prune wxPendingDelete list and the application won't
+    // terminate
+    for ( wxWindowList::const_iterator i = wxTopLevelWindows.begin(),
+                                     end = wxTopLevelWindows.end();
+          i != end;
+          ++i )
     {
-        // Hide it immediately. This should
-        // not be done if this TLW is the
-        // only one left since we then would
-        // risk not to get any idle events
-        // at all anymore during which we
-        // could delete any pending events.
-        Hide();
+        wxTopLevelWindow * const win = wx_static_cast(wxTopLevelWindow *, *i);
+        if ( win != this && win->IsShown() )
+        {
+            // there remains at least one other visible TLW, we can hide this
+            // one
+            Hide();
+
+            break;
+        }
     }
 
     return true;
@@ -412,14 +459,3 @@ void wxTopLevelWindowBase::RequestUserAttention(int WXUNUSED(flags))
     // it's probably better than do nothing, isn't it?
     Raise();
 }
-
-void wxTopLevelWindowBase::RemoveChild(wxWindowBase *child)
-{
-    if ( child == m_winDefault )
-        m_winDefault = NULL;
-
-    if ( child == m_winTmpDefault )
-        m_winTmpDefault = NULL;
-
-    wxWindow::RemoveChild(child);
-}