message: Drag and Drop: Source can also inhibit the preview on target, useful for extern sources that only exists for one frame.
diff: @@ -11424,6 +11424,7 @@ const ImGuiPayload* ImGui::AcceptDragDropPayload(const char* type, ImGuiDragDrop
  // Render default drop visuals
  payload.Preview = was_accepted_previously;
  + flags |= (g.DragDropSourceFlags & ImGuiDragDropFlags_AcceptNoDrawDefaultRect); // Source can also inhibit the preview (useful for external sources that lives for 1 frame)
  if (!(flags & ImGuiDragDropFlags_AcceptNoDrawDefaultRect) && payload.Preview)
  {
  // FIXME-DRAG: Settle on a proper default visuals for drop target.
  