Drag and Drop: Exposed some internals.

imgui.cpp

@@ -673,7 +673,6 @@ static bool             DataTypeApplyOpFromText(const char* buf, const char* ini
 
 namespace ImGui
 {
-static void             ClearDragDrop();
 static void             FocusPreviousWindow();
 }
 
@@ -11151,7 +11150,7 @@ void ImGui::Value(const char* prefix, float v, const char* float_format)
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
 
-static void ImGui::ClearDragDrop()
+void ImGui::ClearDragDrop()
 {
     ImGuiContext& g = *GImGui;
     g.DragDropActive = false;
@@ -11340,6 +11339,12 @@ bool ImGui::BeginDragDropTarget()
     return true;
 }
 
+bool ImGui::IsDragDropPayloadBeingAccepted()
+{
+    ImGuiContext& g = *GImGui;
+    return g.DragDropActive && g.DragDropAcceptIdPrev != 0;
+}
+
 const ImGuiPayload* ImGui::AcceptDragDropPayload(const char* type, ImGuiDragDropFlags flags)
 {
     ImGuiContext& g = *GImGui;

imgui_internal.h

@@ -873,6 +873,8 @@ namespace ImGui
     IMGUI_API bool          SplitterBehavior(ImGuiID id, const ImRect& bb, ImGuiAxis axis, float* size1, float* size2, float min_size1, float min_size2, float hover_extend = 0.0f);
 
     IMGUI_API bool          BeginDragDropTargetCustom(const ImRect& bb, ImGuiID id);
+    IMGUI_API void          ClearDragDrop();
+    IMGUI_API bool          IsDragDropPayloadBeingAccepted();
 
     // FIXME-WIP: New Columns API
     IMGUI_API void          BeginColumns(const char* id, int count, ImGuiColumnsFlags flags = 0); // setup number of columns. use an identifier to distinguish multiple column sets. close with EndColumns().