qt: Stop Qt from handling Shift+F10, fixes #3355

src/qt/qt_mainwindow.cpp

@@ -70,6 +70,7 @@ extern int qt_nvr_save(void);
 #include <QTimer>
 #include <QThread>
 #include <QKeyEvent>
+#include <QShortcut>
 #include <QMessageBox>
 #include <QFocusEvent>
 #include <QApplication>
@@ -628,6 +629,8 @@ MainWindow::MainWindow(QWidget *parent)
 #endif
 
     setContextMenuPolicy(Qt::PreventContextMenu);
+    /* Remove default Shift+F10 handler, which unfocuses keyboard input even with no context menu. */
+    connect(new QShortcut(QKeySequence(Qt::SHIFT + Qt::Key_F10), this), &QShortcut::activated, this, [this](){});
 
     connect(this, &MainWindow::initRendererMonitor, this, &MainWindow::initRendererMonitorSlot);
     connect(this, &MainWindow::initRendererMonitorForNonQtThread, this, &MainWindow::initRendererMonitorSlot, Qt::BlockingQueuedConnection);