diff -r 644d0835a358 src/widget.cpp
--- a/src/widget.cpp	Sat Mar 07 19:40:36 2009 +0100
+++ b/src/widget.cpp	Sat Mar 14 11:13:28 2009 +0100
@@ -1471,11 +1471,21 @@
 				if (nwrb != NULL) nwrb->SetResize(parts->d.xy.x_pos, parts->d.xy.y_pos);
 				break;
 			}
+			case WPT_RESIZE_PTR: {
+				NWidgetResizeBase *nwrb = dynamic_cast<NWidgetResizeBase *>(*dest);
+				if (nwrb != NULL) nwrb->SetResize(parts->d.xy_ptr->x_pos, parts->d.xy_ptr->y_pos);
+				break;
+			}
 			case WPT_MINSIZE: {
 				NWidgetResizeBase *nwrb = dynamic_cast<NWidgetResizeBase *>(*dest);
 				if (nwrb != NULL) nwrb->SetMinimalSize(parts->d.xy.x_pos, parts->d.xy.y_pos);
 				break;
 			}
+			case WPT_MINSIZE_PTR: {
+				NWidgetResizeBase *nwrb = dynamic_cast<NWidgetResizeBase *>(*dest);
+				if (nwrb != NULL) nwrb->SetMinimalSize(parts->d.xy_ptr->x_pos, parts->d.xy_ptr->y_pos);
+				break;
+			}
 			case WPT_FILL: {
 				NWidgetResizeBase *nwrb = dynamic_cast<NWidgetResizeBase *>(*dest);
 				if (nwrb != NULL) nwrb->SetFill(parts->d.xy.x_pos, parts->d.xy.y_pos);
@@ -1489,6 +1499,14 @@
 				}
 				break;
 			}
+			case WPT_DATATIP_PTR: {
+				NWidgetCore *nwc = dynamic_cast<NWidgetCore *>(*dest);
+				if (nwc != NULL) {
+					nwc->widget_data = parts->d.datatip_ptr->data;
+					nwc->tool_tip = parts->d.datatip_ptr->tooltip;
+				}
+				break;
+			}
 			case WPT_ENDCONTAINER:
 				return num_used;
 			default:
diff -r 644d0835a358 src/widget_type.h
--- a/src/widget_type.h	Sat Mar 07 19:40:36 2009 +0100
+++ b/src/widget_type.h	Sat Mar 14 11:13:28 2009 +0100
@@ -263,7 +263,10 @@
 
 /* == Nested widget parts == */
 
-/** Widget part for storing a x/y size. */
+/**
+ * Widget part for storing a x/y size.
+ * @todo Move this to core/geometry_type.hpp, in a Point16 class/struct.
+ */
 struct NWidgetPartDataXY {
 	int16 x_pos; ///< X size.
 	int16 y_pos; ///< Y size.
@@ -287,9 +290,12 @@
  */
 enum NWidgetPartType {
 	WPT_RESIZE = 0xf0, ///< Widget part for specifying resizing.
+	WPT_RESIZE_PTR,    ///< Widget part for specifying resizing via a pointer.
 	WPT_MINSIZE,       ///< Widget part for specifying minimal size.
+	WPT_MINSIZE_PTR,   ///< Widget part for specifying minimal size via a pointer.
 	WPT_FILL,          ///< Widget part for specifying fill.
 	WPT_DATATIP,       ///< Widget part for specifying data and tooltip.
+	WPT_DATATIP_PTR,   ///< Widget part for specifying data and tooltip via a pointer.
 	WPT_ENDCONTAINER,  ///< Widget part to denote end of a container.
 };
 
@@ -300,7 +306,9 @@
 	byte type; ///< Type of the part. @see NWidgetPartType.
 	union {
 		NWidgetPartDataXY xy; ///< Part with an x/y size.
+		NWidgetPartDataXY *xy_ptr; ///< Part with a pointer to an x/y size.
 		NWidgetPartDataTip data_tip; ///< Part with a data/tooltip.
+		NWidgetPartDataTip *datatip_ptr; ///< Part with a pointer to data/tooltip.
 		NWidgetPartWidget widget; ///< Part with a start of a widget.
 	} d;
 };
@@ -322,6 +330,20 @@
 }
 
 /**
+ * Widget part function for using a pointer to set the resize step.
+ * @param ptr Pointer to horizontal and vertical resize step.
+ */
+static inline NWidgetPart SetResize(NWidgetPartDataXY *ptr)
+{
+	NWidgetPart part;
+
+	part.type = WPT_RESIZE_PTR;
+	part.d.xy_ptr = ptr;
+
+	return part;
+}
+
+/**
  * Widget part function for setting the minimal size.
  * @param dx Horizontal minimal size.
  * @param dy Vertical minimal size.
@@ -338,6 +360,20 @@
 }
 
 /**
+ * Widget part function for using a pointer to set the minimal size.
+ * @param ptr Pointer to horizontal and vertical minimal size.
+ */
+static inline NWidgetPart SetMinimalSize(NWidgetPartDataXY *ptr)
+{
+	NWidgetPart part;
+
+	part.type = WPT_MINSIZE_PTR;
+	part.d.xy_ptr = ptr;
+
+	return part;
+}
+
+/**
  * Widget part function for setting filling.
  * @param x_fill Allow horizontal filling from minimal size.
  * @param y_fill Allow vertical filling from minimal size.
@@ -382,6 +418,20 @@
 }
 
 /**
+ * Widget part function for setting the data and tooltip via a pointer.
+ * @param ptr Pointer to the data and tooltip of the widget.
+ */
+static inline NWidgetPart SetDataTip(NWidgetPartDataTip *ptr)
+{
+	NWidgetPart part;
+
+	part.type = WPT_DATATIP_PTR;
+	part.d.datatip_ptr = ptr;
+
+	return part;
+}
+
+/**
  * Widget part function for starting a new 'real' widget.
  * @param tp  Type of the new nested widget.
  * @param col Colour of the new widget.