address deprecation warning

diff --git a/src/frontends/qt/qt_helpers.cpp b/src/frontends/qt/qt_helpers.cpp
index 2e5e7da9c5f7e45b0db02db857c9ad3152a174d0..fc1f961b5af537dae100318b3a41587d895a1106 100644 (file)
--- a/src/frontends/qt/qt_helpers.cpp
+++ b/src/frontends/qt/qt_helpers.cpp
@@ -703,7 +703,11 @@ QString formatToolTip(QString text, int em)
                text = Qt::convertFromPlainText(text, Qt::WhiteSpaceNormal);
        // Compute desired width in pixels
        QFont const font = QToolTip::font();
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 11, 0))
+       int const px_width = em * QFontMetrics(font).horizontalAdvance("M");
+#else
        int const px_width = em * QFontMetrics(font).width("M");
+#endif
        // Determine the ideal width of the tooltip
        QTextDocument td("");
        td.setHtml(text);