Reluctantly exposed GetActiveID(), GetHoveredID() in imgui_internal because the demo code will need it.

imgui.cpp

@@ -1974,6 +1974,12 @@ void ImGui::SetActiveID(ImGuiID id, ImGuiWindow* window)
     }
 }
 
+ImGuiID ImGui::GetActiveID()
+{
+    ImGuiContext& g = *GImGui;
+    return g.ActiveId;
+}
+
 // Assume that SetFocusID() is called in the context where its NavLayer is the current window nav layer.
 void ImGui::SetFocusID(ImGuiID id, ImGuiWindow* window)
 {
@@ -2000,6 +2006,12 @@ void ImGui::SetHoveredID(ImGuiID id)
     g.HoveredIdAllowOverlap = false;
 }
 
+ImGuiID ImGui::GetHoveredID()
+{
+    ImGuiContext& g = *GImGui;
+    return g.HoveredId ? g.HoveredId : g.HoveredIdPreviousFrame;
+}
+
 void ImGui::KeepAliveID(ImGuiID id)
 {
     ImGuiContext& g = *GImGui;