Fix AltGr on Windows

Fixes: QTBUG-83710
Change-Id: Iaf5a33c0aeb53348d36cb7dda60602041299cd50
Reviewed-by: Allan Sandfeld Jensen <[email protected]>
(cherry picked from commit 53498cb)

Author: stampho

src/core/web_event_factory.cpp

@@ -171,8 +171,15 @@ static QString qtTextForKeyEvent(const QKeyEvent *ev, int qtKey, Qt::KeyboardMod
 {
     QString text = ev->text();
 
-    if ((qtModifiers & Qt::ControlModifier) && keyboardDriver() == KeyboardDriver::Xkb)
+    if (keyboardDriver() == KeyboardDriver::Xkb && (qtModifiers & Qt::ControlModifier)) {
         text.clear();
+    }
+
+    // Keep text for Ctrl+Alt key combinations on Windows. It is an alternative for AltGr.
+    if (keyboardDriver() == KeyboardDriver::Windows
+            && (qtModifiers & Qt::ControlModifier) && !(qtModifiers & Qt::AltModifier)) {
+        text.clear();
+    }
 
     return text;
 }