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Fix QSignalMapper connects silently broken under Qt6 (using the old string based system). QSignalMapper::mapped(int/QWidget*) was deprecated in Qt 5.15 and

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removed in Qt6, replaced by mappedInt/mappedWidget/mappedString.

What was broken:
* the logo-conflict rename dialog
* the system tray show/hide toggle
* the Window menu
* export dialog's per-diagram preview controls

Switched to the modern mappedInt/mappedWidget signals with pointer-to-member connect(), guarded for Qt < 5.15 until Qt5 can be dropped.
This commit is contained in:
Andre Rummler
2026-08-05 10:29:31 +02:00
parent fb51489436
commit ab61e00cdf
4 changed files with 27 additions and 7 deletions
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sources/qetapp.cpp
+5 -2
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@@ -122,8 +122,11 @@ QETApp::QETApp() :
initSplashScreen();
initSystemTray();
connect(&signal_map, SIGNAL(mapped(QWidget *)),
this, SLOT(invertMainWindowVisibility(QWidget *)));
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
connect(&signal_map, &QSignalMapper::mappedObject, this, [this](QObject *object) { invertMainWindowVisibility(qobject_cast<QWidget *>(object)); });
#else // TODO Qt6 only: remove, mappedObject() always available
connect(&signal_map, SIGNAL(mapped(QWidget *)), this, SLOT(invertMainWindowVisibility(QWidget *)));
#endif
qApp->setQuitOnLastWindowClosed(false);
connect(qApp, &QApplication::lastWindowClosed,
this, &QETApp::checkRemainingWindows);