From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 6 Oct 2009 00:08:10 +0000 (+0000)
Subject: Ensure that an event loop exists in ShowViewOrWindowWithEffect().
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/dc72e2adfa7e7de367c244e91c0402733c2904a8

Ensure that an event loop exists in ShowViewOrWindowWithEffect().

We may not have an event loop yet if wxWindow::ShowWithEffect() is called
during the application startup, create a temporary event loop instead of
crashing in this case.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62309 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/src/osx/cocoa/window.mm b/src/osx/cocoa/window.mm
index 6488703c09..26d42af3f6 100644
--- a/src/osx/cocoa/window.mm
+++ b/src/osx/cocoa/window.mm
@@ -1395,9 +1395,12 @@ wxWidgetCocoaImpl::ShowViewOrWindowWithEffect(wxWindow *win,
     //
     // notice that because the default animation mode is NSAnimationBlocking,
     // no user input events ought to be processed from here
-    wxEventLoopBase * const loop = wxEventLoopBase::GetActive();
-    while ( ![animDelegate isDone] )
-        loop->Dispatch();
+    {
+        wxEventLoopGuarantor ensureEventLoopExistence;
+        wxEventLoopBase * const loop = wxEventLoopBase::GetActive();
+        while ( ![animDelegate isDone] )
+            loop->Dispatch();
+    }
 
     if ( !show )
     {