Add further theme hints to QPlatformTheme.

- Add hints for QDialog/QDialogButtonBox.
- Add hint for available popup-menu area.
- Add keyboard scheme hint replacing
  QGuiApplicationPrivate::currentKeyPlatform()

Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

Task-number: QTBUG-24204
Task-number: QTBUG-24315

Change-Id: I6653786b0dcb49a6fc264d3b9891dbfee502bd3e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/src/plugins/platforms/windows/qwindowstheme.cpp b/src/plugins/platforms/windows/qwindowstheme.cpp
index a59b74cef3..7276db4bb6 100644
--- a/src/plugins/platforms/windows/qwindowstheme.cpp
+++ b/src/plugins/platforms/windows/qwindowstheme.cpp
@@ -220,11 +220,12 @@ static inline QStringList styleNames()
 QVariant QWindowsTheme::themeHint(ThemeHint hint) const
 {
     switch (hint) {
-    case SystemIconThemeName:
-        break;
+    case UseFullScreenForPopupMenu:
+        return QVariant(true);
+    case DialogButtonBoxLayout:
+        return QVariant(int(0)); // QDialogButtonBox::WinLayout
     case IconThemeSearchPaths:
         return QVariant(iconThemeSearchPaths());
-        break;
     case StyleNames:
         return QVariant(styleNames());
     case TextCursorWidth:
@@ -233,8 +234,12 @@ QVariant QWindowsTheme::themeHint(ThemeHint hint) const
         return QVariant(booleanSystemParametersInfo(SPI_GETDROPSHADOW, false));
     case MaximumScrollBarDragDistance:
         return QVariant(qRound(qreal(QWindowsContext::instance()->defaultDPI()) * 1.375));
+    case KeyboardScheme:
+        return QVariant(int(WindowsKeyboardScheme));
+    default:
+        break;
     }
-    return QVariant();
+    return QPlatformTheme::themeHint(hint);
 }
 
 void QWindowsTheme::refresh()