tdf#94006 - need an explicit dispose for GLContext's SystemChildWindow.

Previously we would get an explicit ~OpenGLContext - and potentially
leave FMR's around for other OGC users, now we treat the other users
properly - we need an explicit dispose() to get Window::dispose ordering
right.

Change-Id: I5edcbd73399b6db3dbcfb391570f364f9ab0c70d
Reviewed-on: https://gerrit.libreoffice.org/18412
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/vcl/source/opengl/OpenGLContext.cxx b/vcl/source/opengl/OpenGLContext.cxx
index 432241f03817..f65341a4cbfd 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -112,6 +112,13 @@ OpenGLContext::~OpenGLContext()
     assert (mnRefCount == 1);
 }
 
+// release associated child-window if we have one
+void OpenGLContext::dispose()
+{
+    reset();
+    m_pChildWindow.disposeAndClear();
+}
+
 rtl::Reference<OpenGLContext> OpenGLContext::Create()
 {
     return rtl::Reference<OpenGLContext>(new OpenGLContext);
@@ -1191,6 +1198,7 @@ void OpenGLContext::reset()
             wglMakeCurrent(NULL, NULL);
         wglDeleteContext( m_aGLWin.hRC );
         ReleaseDC( m_aGLWin.hWnd, m_aGLWin.hDC );
+        m_aGLWin.hRC = 0;
     }
 #elif defined( MACOSX )
     OpenGLWrapper::resetCurrent();
@@ -1212,6 +1220,7 @@ void OpenGLContext::reset()
 
         if (mbPixmap && m_aGLWin.glPix != None)
             glXDestroyPixmap(m_aGLWin.dpy, m_aGLWin.glPix);
+        m_aGLWin.ctx = 0;
     }
 #endif
 }