DragDrop: Added IsDragDropActive() helper which is useful for binding to decide how to handle mouse inputs.

imgui.cpp

@@ -11478,6 +11478,12 @@ void ImGui::EndDragDropTarget()
     IM_ASSERT(g.DragDropActive);
 }
 
+bool ImGui::IsDragDropActive()
+{
+    ImGuiContext& g = *GImGui;
+    return g.DragDropActive;
+}
+
 //-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------

imgui.h

@@ -433,6 +433,7 @@ namespace ImGui
     IMGUI_API bool          BeginDragDropTarget();                                                                  // call after submitting an item that may receive an item. If this returns true, you can call AcceptDragDropPayload() + EndDragDropTarget()
     IMGUI_API const ImGuiPayload* AcceptDragDropPayload(const char* type, ImGuiDragDropFlags flags = 0);            // accept contents of a given type. If ImGuiDragDropFlags_AcceptBeforeDelivery is set you can peek into the payload before the mouse button is released.
     IMGUI_API void          EndDragDropTarget();
+    IMGUI_API bool          IsDragDropActive();
 
     // Clipping
     IMGUI_API void          PushClipRect(const ImVec2& clip_rect_min, const ImVec2& clip_rect_max, bool intersect_with_current_clip_rect);