Demo: Display better mouse cursor info for debugging backends.

imgui.h

@@ -738,7 +738,7 @@ enum ImGuiMouseCursor_
     ImGuiMouseCursor_Move,              // Unused
     ImGuiMouseCursor_ResizeNS,          // Unused
     ImGuiMouseCursor_ResizeEW,          // When hovering over a column
-    ImGuiMouseCursor_ResizeNESW,        // Unused
+    ImGuiMouseCursor_ResizeNESW,        // When hovering over the bottom-left corner of a window
     ImGuiMouseCursor_ResizeNWSE,        // When hovering over the bottom-right corner of a window
     ImGuiMouseCursor_Count_
 };

imgui_demo.cpp

@@ -1828,12 +1828,16 @@ void ImGui::ShowTestWindow(bool* p_open)
 
         if (ImGui::TreeNode("Mouse cursors"))
         {
+            const char* mouse_cursors_names[] = { "Arrow", "TextInput", "Move", "ResizeNS", "ResizeEW", "ResizeNESW", "ResizeNWSE" };
+            IM_ASSERT(IM_ARRAYSIZE(mouse_cursors_names) == ImGuiMouseCursor_Count_);
+
+            ImGui::Text("Current mouse cursor = %d: %s", ImGui::GetMouseCursor(), mouse_cursors_names[ImGui::GetMouseCursor()]);
             ImGui::Text("Hover to see mouse cursors:");
             ImGui::SameLine(); ShowHelpMarker("Your application can render a different mouse cursor based on what ImGui::GetMouseCursor() returns. If software cursor rendering (io.MouseDrawCursor) is set ImGui will draw the right cursor for you, otherwise your backend needs to handle it.");
             for (int i = 0; i < ImGuiMouseCursor_Count_; i++)
             {
                 char label[32];
-                sprintf(label, "Mouse cursor %d", i);
+                sprintf(label, "Mouse cursor %d: %s", i, mouse_cursors_names[i]);
                 ImGui::Bullet(); ImGui::Selectable(label, false);
                 if (ImGui::IsItemHovered())
                     ImGui::SetMouseCursor(i);