diff --git a/docs/gallery/widgets-data-and-signals.png b/docs/gallery/widgets-data-and-signals.png
index e0fbdd9b..8ff1bbc2 100644
--- a/docs/gallery/widgets-data-and-signals.png
+++ b/docs/gallery/widgets-data-and-signals.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:7f53190f5fd3ea89b05c79111f9aeb6b478be33619c54411caf7d2ca952acd63
-size 65112
+oid sha256:9be2a64e0d85d6b46aa801c2f4f686f002b9c91f0e4ddaa175e4c711f8ec017b
+size 95146
diff --git a/docs/gallery/widgets.png b/docs/gallery/widgets.png
index 1a7b9b5d..1dfb997b 100644
--- a/docs/gallery/widgets.png
+++ b/docs/gallery/widgets.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3c851afc79cd9326f27f30afb3b6c94128c931c362a3d29fb30a817c81b7d6a0
-size 586274
+oid sha256:3b56d0dc6a7f12f1518b469d61a3d2a466f8de5584a24cbbd447ac3d1dd3e9c6
+size 819272
diff --git a/docs/gallery/widgets/datatable.png b/docs/gallery/widgets/datatable.png
new file mode 100644
index 00000000..c11e3343
--- /dev/null
+++ b/docs/gallery/widgets/datatable.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e525c30ac721c523d035c8b9a7d14f524812033e986545fd534886d771253a22
+size 9966
diff --git a/tools/WidgetGallery/Catalog/DataAndSignals.cs b/tools/WidgetGallery/Catalog/DataAndSignals.cs
index a2964434..71b76145 100644
--- a/tools/WidgetGallery/Catalog/DataAndSignals.cs
+++ b/tools/WidgetGallery/Catalog/DataAndSignals.cs
@@ -110,10 +110,24 @@ public static IEnumerable<GalleryEntry> Build()
 		[
 			new ImGuiWidgets.DataTableColumn<GalleryPart, string> { Label = "Name", Value = part => part.Name },
 			new ImGuiWidgets.DataTableColumn<GalleryPart, int> { Label = "Quantity", Value = part => part.Quantity },
-			new ImGuiWidgets.DataTableColumn<GalleryPart, bool> { Label = "In stock", Value = part => part.InStock },
+
+			// Editable, so the column draws as checkboxes. The gallery never edits it.
+			new ImGuiWidgets.DataTableColumn<GalleryPart, bool> { Label = "In stock", Value = part => part.InStock, OnEdit = _ => { } },
 		]);
+		ImGuiWidgets.DataTableOptions partsOptions = new() { RowHeight = 20f, OuterSize = new Vector2(270f, 150f) };
+		bool isPartsSelectionSet = false;
 		yield return new("DataTable", Category, [nameof(ImGuiWidgets.DataTable), typeof(ImGuiWidgets.DataTableState<>).Name, typeof(ImGuiWidgets.DataTableColumn<>).Name, typeof(ImGuiWidgets.DataTableColumn<,>).Name], _ =>
-			ImGuiWidgets.DataTable("##parts", parts, partsTable));
+		{
+			ImGuiWidgets.DataTable("##parts", parts, partsTable, partsOptions);
+
+			// The table learns its rows on its first draw, so the selection can only be set after it.
+			if (!isPartsSelectionSet)
+			{
+				partsTable.SelectRows([2]);
+				partsTable.ActivateCell(new ImGuiWidgets.DataTableCell(2, 1));
+				isPartsSelectionSet = true;
+			}
+		});
 	}
 
 	/// <summary>A row of the data table tile.</summary>
diff --git a/tools/WidgetGallery/SampleFolder.cs b/tools/WidgetGallery/SampleFolder.cs
index 34579609..f2cfd9c5 100644
--- a/tools/WidgetGallery/SampleFolder.cs
+++ b/tools/WidgetGallery/SampleFolder.cs
@@ -69,9 +69,18 @@ private static void Create()
 			File.WriteAllText(Path.Join(root, file), "sample");
 		}
 
+		// Directories go through Directory: Windows refuses to open a directory as a file, so
+		// File.SetLastWriteTime on one throws there while Linux and macOS allow it.
 		foreach (string entry in Directory.EnumerateFileSystemEntries(root, "*", SearchOption.AllDirectories))
 		{
-			File.SetLastWriteTime(entry, Timestamp);
+			if (Directory.Exists(entry))
+			{
+				Directory.SetLastWriteTime(entry, Timestamp);
+			}
+			else
+			{
+				File.SetLastWriteTime(entry, Timestamp);
+			}
 		}
 	}
 }