-#define wxTR_NO_BUTTONS 0x0000 // for convenience
-#define wxTR_HAS_BUTTONS 0x0001 // generates a +/- button
-#define wxTR_TWIST_BUTTONS 0x0002 // generates a twister button
-#define wxTR_NO_LINES 0x0004 // don't generate level connectors
-#define wxTR_LINES_AT_ROOT 0x0008 // connect top-level nodes
-#define wxTR_MAC_BUTTONS wxTR_TWIST_BUTTONS // backward compatibility
-#define wxTR_AQUA_BUTTONS 0x0010 // used internally
-
-#define wxTR_SINGLE 0x0000 // for convenience
-#define wxTR_MULTIPLE 0x0020 // can select multiple items
-#define wxTR_EXTENDED 0x0040 // TODO: allow extended selection
-
-#define wxTR_EDIT_LABELS 0x0200 // can edit item labels
-#define wxTR_ROW_LINES 0x0400 // put border around items
-#define wxTR_HIDE_ROOT 0x0800 // don't display root node
-#define wxTR_HAS_VARIABLE_ROW_HEIGHT 0x0080 // what it says
+#define wxTR_NO_BUTTONS 0x0000 // for convenience
+#define wxTR_HAS_BUTTONS 0x0001 // generates a +/- button
+#define wxTR_TWIST_BUTTONS 0x0002 // generates a twister button
+#define wxTR_NO_LINES 0x0004 // don't generate level connectors
+#define wxTR_LINES_AT_ROOT 0x0008 // connect top-level nodes
+#define wxTR_MAC_BUTTONS wxTR_TWIST_BUTTONS // backward compatibility
+#define wxTR_AQUA_BUTTONS 0x0010 // used internally
+
+#define wxTR_SINGLE 0x0000 // for convenience
+#define wxTR_MULTIPLE 0x0020 // can select multiple items
+#define wxTR_EXTENDED 0x0040 // TODO: allow extended selection
+#define wxTR_FULL_ROW_HIGHLIGHT 0x2000 // highlight full horizontal space
+
+#define wxTR_EDIT_LABELS 0x0200 // can edit item labels
+#define wxTR_ROW_LINES 0x0400 // put border around items
+#define wxTR_HIDE_ROOT 0x0800 // don't display root node
+#define wxTR_HAS_VARIABLE_ROW_HEIGHT 0x0080 // what it says