Fixes: MTextEdit: pre-edit injection event passing in the presence of QMultiInputContext

RevBy: Pekka Vuorela
Details: after disabling explicit loading of MInputContext and relying on
QT_IM_MODULE, the actual input context returned by QApplication::inputContext
is QMultiInputContext which acts as a proxy and forwards calls to, in our
typical case, MInputContext.  But it doesn't override and forward
QObject::event(), so we can't use QCoreApplication::sendEvent for sending the
pre-edit injection event to the input context.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/corelib/widgets/mtextedit.cpp b/src/corelib/widgets/mtextedit.cpp
index a4a1525d..c051bb29 100755
--- a/src/corelib/widgets/mtextedit.cpp
+++ b/src/corelib/widgets/mtextedit.cpp
@@ -1967,9 +1967,7 @@ void MTextEdit::handleMouseRelease(int eventCursorPosition, QGraphicsSceneMouseE
                     QInputContext *ic = qApp->inputContext();
                     if (ic) {
                         MPreeditInjectionEvent event(preedit, eventCursorPosition - start);
-                        QCoreApplication::sendEvent(ic, &event);
-
-                        injectionAccepted = event.isAccepted();
+                        injectionAccepted = ic->filterEvent(&event);
                     }
 
                     // if injection wasn't supported, put the text back and fall back to cursor changing