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-rw-r--r--vcl/source/opengl/OpenGLContext.cxx4
1 files changed, 2 insertions, 2 deletions
diff --git a/vcl/source/opengl/OpenGLContext.cxx b/vcl/source/opengl/OpenGLContext.cxx
index 6bb7c1036552..20d9acddfed2 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -390,7 +390,7 @@ bool OpenGLContext::ImplInit()
#elif defined( ANDROID )
#elif defined( UNX )
- m_aGLWin.ctx = glXCreateContext(m_aGLWin.dpy,
+ m_aGLWin.ctx = m_aGLWin.dpy == 0 ? 0 : glXCreateContext(m_aGLWin.dpy,
m_aGLWin.vi,
0,
GL_TRUE);
@@ -690,7 +690,7 @@ SystemWindowData OpenGLContext::generateWinData(Window* pParent)
Display *dpy = reinterpret_cast<Display*>(sysData->pDisplay);
- if( !glXQueryExtension( dpy, NULL, NULL ) )
+ if( dpy == 0 || !glXQueryExtension( dpy, NULL, NULL ) )
return aWinData;
XLIB_Window win = sysData->aWindow;