Make it compile against qt6

CMakeLists.txt

@@ -98,8 +98,14 @@ else()
     endif()
 endif()
 
-add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0)
-add_definitions(-DQT_USE_FAST_OPERATOR_PLUS)
+add_definitions(
+    -DQT_DISABLE_DEPRECATED_BEFORE=0x050f00
+    -DQT_DEPRECATED_WARNINGS_SINCE=0x060000
+    -DKF_DISABLE_DEPRECATED_BEFORE_AND_AT=0x055800
+    -DKF_DEPRECATED_WARNINGS_SINCE=0x060000
+)
+
+
 add_definitions(-DQT_NO_URL_CAST_FROM_STRING)
 
 remove_definitions(-DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_FROM_BYTEARRAY)

kded/pindialog.cpp

@@ -7,9 +7,9 @@
 
 #include "pindialog.h"
 
-#include <QDesktopWidget>
 #include <QIcon>
 #include <QIntValidator>
+#include <QScreen>
 
 #include <KLocalizedString>
 #include <KWindowSystem>
@@ -48,7 +48,8 @@ PinDialog::PinDialog(ModemManager::Modem *modem, const Type type, QWidget *paren
     ui->puk->setValidator(validator2);
 
     ui->errorMessage->setHidden(true);
-    QRect desktop = QApplication::desktop()->screenGeometry(topLevelWidget());
+    const QRect desktop = screen()->availableGeometry();
+    // QRect desktop = QApplication::desktop()->screenGeometry(topLevelWidget());
     setMinimumWidth(360); // width of the PinePhone display
 
     pixmapLabel = new QLabel(this);