src/java.desktop/windows/native/libawt/windows/awt_DnDDS.cpp

@@ -264,15 +264,18 @@
 
     ::GetCursorPos(&dragSource->m_dragPoint);
 
     dragSource->Signal();
 
+    AwtToolkit &toolkit = AwtToolkit::GetInstance();
+    toolkit.isInDoDragDropLoop = TRUE;
     res = ::DoDragDrop(dragSource,
                        dragSource,
                        convertActionsToDROPEFFECT(dragSource->m_actions),
                        &effects
           );
+    toolkit.isInDoDragDropLoop = FALSE;
 
     if (effects == DROPEFFECT_NONE && dragSource->m_dwPerformedDropEffect != DROPEFFECT_NONE) {
         effects = dragSource->m_dwPerformedDropEffect;
     }
     dragSource->m_dwPerformedDropEffect = DROPEFFECT_NONE;