QDropEvent::pos() is deprecated since 6.0.

src/app/puzzle/scene/vpmaingraphicsview.cpp

@@ -205,7 +205,7 @@ void VPMainGraphicsView::dropEvent(QDropEvent *event)
             event->acceptProposedAction();
 
             piece->ClearTransformations();
-            piece->SetPosition(mapToScene(event->pos()));
+            piece->SetPosition(mapToScene(DropEventPos(event)));
             piece->SetZValue(1.0);
 
             auto *command = new VPUndoMovePieceOnSheet(layout->GetFocusedSheet(), piece);

src/libs/vmisc/compatibility.h

@@ -318,4 +318,15 @@ inline auto VLocaleCharacter(const QChar &character) -> QChar
 {
     return character;
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+inline auto DropEventPos(const QDropEvent *event) -> QPoint
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    return event->position().toPoint();
+#else
+    return event->pos();
+#endif
+}
+
 #endif // COMPATIBILITY_H

src/libs/vwidgets/vmaingraphicsview.cpp

@@ -60,6 +60,7 @@
 #include "../vmisc/vabstractapplication.h"
 #include "../vmisc/vcommonsettings.h"
 #include "../vmisc/literals.h"
+#include "../vmisc/compatibility.h"
 #include "global.h"
 #include "../ifc/xml/utils.h"
 
@@ -711,7 +712,7 @@ void VMainGraphicsView::dropEvent(QDropEvent *event)
             QFileInfo f(fileName);
             if (f.exists() && IsMimeTypeImage(QMimeDatabase().mimeTypeForFile(fileName)))
             {
-                emit currentScene->AddBackgroundImage(mapToScene(event->pos()), fileName);
+                emit currentScene->AddBackgroundImage(mapToScene(DropEventPos(event)), fileName);
                 event->acceptProposedAction();
             }
         }