Use QtPlatformHeaders to set platform specific functionality

This involves exposing a new function in the QPlatformNativeInterface
which gets a public function for QGuiApplication

Proof of concept is done through implementing _NET_WM_WINDOW_TYPE
setters for xcb

Change-Id: Ic9544e775fb71cc9b30273595ec41b1cdb1c9d64
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/plugins/platforms/xcb/qxcbnativeinterface.cpp b/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
index 37936a9c72..625a804c0c 100644
--- a/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
+++ b/src/plugins/platforms/xcb/qxcbnativeinterface.cpp
@@ -60,6 +60,8 @@
 #include "qglxintegration.h"
 #endif
 
+#include <QtPlatformHeaders/qxcbwindowfunctions.h>
+
 #ifdef XCB_USE_XLIB
 #  include <X11/Xlib.h>
 #else
@@ -243,6 +245,14 @@ QPlatformNativeInterface::NativeResourceForScreenFunction QXcbNativeInterface::n
     return 0;
 }
 
+QFunctionPointer QXcbNativeInterface::platformFunction(const QByteArray &function) const
+{
+    if (function == QXcbWindowFunctions::setWmWindowTypeIdentifier()) {
+        return QFunctionPointer(QXcbWindow::setWmWindowTypeStatic);
+    }
+    return Q_NULLPTR;
+}
+
 void *QXcbNativeInterface::appTime(const QXcbScreen *screen)
 {
     return reinterpret_cast<void *>(quintptr(screen->connection()->time()));