Make it compile without deprecated method

CMakeLists.txt

@@ -139,7 +139,7 @@ include_directories(
 
 add_definitions(-D_ASSUAN_ONLY_GPG_ERRORS)
 #add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x050f00)
-add_definitions(-DKF_DISABLE_DEPRECATED_BEFORE_AND_AT=0x054C00)
+add_definitions(-DKF_DISABLE_DEPRECATED_BEFORE_AND_AT=0x054D00)
 if(CMAKE_COMPILER_IS_GNUCXX)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-braces -Wno-parentheses -Wno-ignored-qualifiers")
 endif()

src/mainwindow.cpp

@@ -8,7 +8,7 @@
 */
 
 #include <config-kleopatra.h>
-
+#include <kwidgetsaddons_version.h>
 #include "mainwindow.h"
 #include "aboutdata.h"
 
@@ -465,7 +465,11 @@ void MainWindow::Private::setupActions()
     clipboadMenu = new ClipboardMenu(q);
     clipboadMenu->setMainWindow(q);
     clipboadMenu->clipboardMenu()->setIcon(QIcon::fromTheme(QStringLiteral("edit-paste")));
+#if KWIDGETSADDONS_VERSION >= QT_VERSION_CHECK(5, 77, 0)
+    clipboadMenu->clipboardMenu()->setPopupMode(QToolButton::InstantPopup);
+#else
     clipboadMenu->clipboardMenu()->setDelayed(false);
+#endif
     coll->addAction(QStringLiteral("clipboard_menu"), clipboadMenu->clipboardMenu());
 
     q->setStandardToolBarMenuEnabled(true);