Export x11 screen of the QXcbConnection to the native interface

With XCB a client cannot retrieve the information on which X screen it
is running. This information is only available when opening the xcb
connection. As this is done by Qt no application is able to retrieve
this information. By exporting the x11 screen we can provide this
information again in QtX11Extras.

Change-Id: I50f1d3e803dc7e3afac0e5c7f1648ccda4502e7c
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/plugins/platforms/xcb/qxcbnativeinterface.h b/src/plugins/platforms/xcb/qxcbnativeinterface.h
index 86b94e62e4..aec78087f5 100644
--- a/src/plugins/platforms/xcb/qxcbnativeinterface.h
+++ b/src/plugins/platforms/xcb/qxcbnativeinterface.h
@@ -70,7 +70,8 @@ public:
         ScreenHintStyle,
         StartupId,
         TrayWindow,
-        GetTimestamp
+        GetTimestamp,
+        X11Screen
     };
 
     QXcbNativeInterface();
@@ -94,6 +95,7 @@ public:
     void *appUserTime(const QXcbScreen *screen);
     void *getTimestamp(const QXcbScreen *screen);
     void *startupId();
+    void *x11Screen();
     static void setAppTime(QScreen *screen, xcb_timestamp_t time);
     static void setAppUserTime(QScreen *screen, xcb_timestamp_t time);
     static void *eglContextForContext(QOpenGLContext *context);