Fix LazyDelete crasher, and add & test more post-dispose robustness.

Change-Id: I0e9460cb33b7cb5da9ddb950ff27bac8cbf7fed8
diff --git a/vcl/qa/cppunit/lifecycle.cxx b/vcl/qa/cppunit/lifecycle.cxx
index 8be94a5..12b0a51 100644
--- a/vcl/qa/cppunit/lifecycle.cxx
+++ b/vcl/qa/cppunit/lifecycle.cxx
@@ -30,6 +30,7 @@ public:
    void testIsolatedWidgets();
    void testParentedWidgets();
    void testChildDispose();
    void testPostDispose();

    CPPUNIT_TEST_SUITE(LifecycleTest);
    CPPUNIT_TEST(testCast);
@@ -38,6 +39,7 @@ public:
    CPPUNIT_TEST(testIsolatedWidgets);
    CPPUNIT_TEST(testParentedWidgets);
    CPPUNIT_TEST(testChildDispose);
    CPPUNIT_TEST(testPostDispose);
    CPPUNIT_TEST_SUITE_END();
};

@@ -125,6 +127,21 @@ void LifecycleTest::testChildDispose()
    xWin->disposeOnce();
}

void LifecycleTest::testPostDispose()
{
    VclPtr<WorkWindow> xWin(new WorkWindow((vcl::Window *)NULL, WB_STDWORK));
    xWin->disposeOnce();

    // check selected methods continue to work post-dispose
    CPPUNIT_ASSERT(!xWin->GetParent());
    xWin->Show();
    CPPUNIT_ASSERT(!xWin->IsReallyShown());
    CPPUNIT_ASSERT(!xWin->IsEnabled());
    CPPUNIT_ASSERT(!xWin->IsInputEnabled());
    CPPUNIT_ASSERT(!xWin->GetChild(0));
    CPPUNIT_ASSERT(!xWin->GetWindow(0));
}

CPPUNIT_TEST_SUITE_REGISTRATION(LifecycleTest);

CPPUNIT_PLUGIN_IMPLEMENT();
diff --git a/vcl/source/window/window2.cxx b/vcl/source/window/window2.cxx
index 95468f3..cf8fd3f 100644
--- a/vcl/source/window/window2.cxx
+++ b/vcl/source/window/window2.cxx
@@ -975,27 +975,27 @@ vcl::Window* Window::ImplGetWindow()

ImplFrameData* Window::ImplGetFrameData()
{
    return mpWindowImpl->mpFrameData;
    return mpWindowImpl ? mpWindowImpl->mpFrameData : NULL;
}

SalFrame* Window::ImplGetFrame() const
{
    return mpWindowImpl->mpFrame;
    return mpWindowImpl ? mpWindowImpl->mpFrame : NULL;
}

vcl::Window* Window::ImplGetParent() const
{
    return mpWindowImpl->mpParent;
    return mpWindowImpl ? mpWindowImpl->mpParent.get() : NULL;
}

vcl::Window* Window::ImplGetClientWindow() const
{
    return mpWindowImpl->mpClientWindow;
    return mpWindowImpl ? mpWindowImpl->mpClientWindow.get() : NULL;
}

vcl::Window* Window::ImplGetBorderWindow() const
{
    return mpWindowImpl->mpBorderWindow;
    return mpWindowImpl ? mpWindowImpl->mpBorderWindow.get() : NULL;
}

vcl::Window* Window::ImplGetFirstOverlapWindow()
@@ -1237,7 +1237,7 @@ bool Window::IsReallyVisible() const

bool Window::IsReallyShown() const
{
    return mpWindowImpl->mbReallyShown;
    return mpWindowImpl ? mpWindowImpl->mbReallyShown : false;
}

bool Window::IsInInitShow() const
@@ -1247,12 +1247,12 @@ bool Window::IsInInitShow() const

bool Window::IsEnabled() const
{
    return !mpWindowImpl->mbDisabled;
    return mpWindowImpl ? !mpWindowImpl->mbDisabled : false;
}

bool Window::IsInputEnabled() const
{
    return !mpWindowImpl->mbInputDisabled;
    return mpWindowImpl ? !mpWindowImpl->mbInputDisabled : false;
}

bool Window::IsAlwaysEnableInput() const