Which version on Qt are you using? It looks like this was fixed in 5.5: https://codereview.qt-project.org/#/c/109592/
-Richard ________________________________ Fra: Interest <[email protected]> på vegne av Robert Iakobashvili <[email protected]> Sendt: 10. november 2015 06:49 Til: [email protected] Emne: [Interest] Qt at iOS: Crash on null QWindow pointer in QIOSInputContext::scrollToCursor Gentlemen, My app was crashing on a null QWindow pointer from focusView() in QIOSInputContext::scrollToCursor Unfortunately, my attempt to create a reproducing example failed; thus, a formal bug-report is not an option. The scenario is: sending an email from a native popover over a Qt-widget app, it was crashing on appearance of Apple's Mail window. It could be work-arounded by checking the result of focusView() call prior to using it and not assuming that it for sure contains a valid QWindow: --- qiosinputcontext.mm.orig 2015-11-02 14:39:50.000000000 +0200 +++ qiosinputcontext.mm<http://qiosinputcontext.mm> 2015-11-02 14:45:43.000000000 +0200 @@ -456,7 +456,10 @@ const int margin = 20; QRectF translatedCursorPos = qApp->inputMethod()->cursorRectangle(); - translatedCursorPos.translate(focusView().qwindow->geometry().topLeft()); + QWindow* qw = focusView().qwindow; + if (! qw) + return; + translatedCursorPos.translate(qw->geometry().topLeft()); qreal keyboardY = [rootView convertRect:m_keyboardState.keyboardEndRect fromView:nil].origin.y; int statusBarY = qGuiApp->primaryScreen()->availableGeometry().y(); Hope, it helps to somebody. Take care, Regards, Robert
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