2 files changed, 8 insertions, 3 deletions
diff --git a/src/gui/kernel/qplatformintegration.cpp b/src/gui/kernel/qplatformintegration.cpp
index 70de75072c..8a0540efc2 100644
--- a/src/gui/kernel/qplatformintegration.cpp
+++ b/src/gui/kernel/qplatformintegration.cpp
@@ -210,6 +210,11 @@ QPlatformServices *QPlatformIntegration::services() const
     \value ForeignWindows The platform allows creating QWindows which represent
     native windows created by other processes or anyway created by using native
     libraries.
+
+    \value NonFullScreenWindows The platform supports top-level windows which do not
+    fill the screen. The default implementation returns true. Returning false for
+    this will cause all windows, including dialogs and popups, to be resized to fill the
+    screen.
  */
 
 
@@ -227,8 +232,7 @@ QPlatformServices *QPlatformIntegration::services() const
 
 bool QPlatformIntegration::hasCapability(Capability cap) const
 {
-    Q_UNUSED(cap);
-    return false;
+    return cap == NonFullScreenWindows;
 }
 
 QPlatformPixmap *QPlatformIntegration::createPlatformPixmap(QPlatformPixmap::PixelType type) const
diff --git a/src/gui/kernel/qplatformintegration.h b/src/gui/kernel/qplatformintegration.h
index ddee6f05c8..bee2ba0caf 100644
--- a/src/gui/kernel/qplatformintegration.h
+++ b/src/gui/kernel/qplatformintegration.h
@@ -90,7 +90,8 @@ public:
         WindowMasks,
         MultipleWindows,
         ApplicationState,
-        ForeignWindows
+        ForeignWindows,
+        NonFullScreenWindows
     };
 
     virtual ~QPlatformIntegration() { }