Drag and Drop: made BeginDragDropSource() clear the IsItemHovered() by default, added a flag to keep it.

imgui.cpp

@@ -10631,6 +10631,10 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags, int mouse_button)
             PushStyleColor(ImGuiCol_PopupBg, GetStyleColorVec4(ImGuiCol_PopupBg) * ImVec4(1.0f, 1.0f, 1.0f, 0.6f));
             BeginTooltipEx(ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_ShowBorders);
         }
+
+        if (!(flags & ImGuiDragDropFlags_SourceNoDisableHover))
+            window->DC.LastItemRectHoveredRect = false;
+
         return true;
     }
     return false;

imgui_internal.h

@@ -220,9 +220,12 @@ enum ImGuiSeparatorFlags_
 // Flags for ImGui::BeginDragDropSource(), ImGui::AcceptDragDropPayload()
 enum ImGuiDragDropFlags_
 {
+    // BeginDragDropSource() flags
     ImGuiDragDropFlags_SourceNoAutoTooltip      = 1 << 0,
-    ImGuiDragDropFlags_AcceptBeforeDelivery     = 1 << 1,       // AcceptDragDropPayload() returns true even before the mouse button is released. You can then call IsDelivery() to test if the payload needs to be delivered.
-    ImGuiDragDropFlags_AcceptNoDrawDefaultRect  = 1 << 2,       // Do not draw the default highlight rectangle when hovering over target.
+    ImGuiDragDropFlags_SourceNoDisableHover     = 1 << 1,       // By default, when dragging we clear data so that IsItemHovered() will return true, to avoid subsequent user code submitting tooltips.
+    // BeginDragDropTarget() flags
+    ImGuiDragDropFlags_AcceptBeforeDelivery     = 1 << 10,      // AcceptDragDropPayload() returns true even before the mouse button is released. You can then call IsDelivery() to test if the payload needs to be delivered.
+    ImGuiDragDropFlags_AcceptNoDrawDefaultRect  = 1 << 11,      // Do not draw the default highlight rectangle when hovering over target.
     ImGuiDragDropFlags_AcceptPeekOnly           = ImGuiDragDropFlags_AcceptBeforeDelivery | ImGuiDragDropFlags_AcceptNoDrawDefaultRect  // For peeking ahead and inspecting the payload before delivery.
 };