diff --git a/src/window_gui.h b/src/window_gui.h
--- a/src/window_gui.h
+++ b/src/window_gui.h
@@ -238,6 +238,8 @@ public:
 	void LowerWidget(byte widget_index);
 	void RaiseWidget(byte widget_index);
 	bool IsWidgetLowered(byte widget_index) const;
+	void AlignWidgetRight(byte widget_index_a, byte widget_index_b);
+	int  GetWidgetWidth(byte widget_index) const;
 
 	void RaiseButtons();
 	void CDECL SetWidgetsDisabledState(bool disab_stat, int widgets, ...);
@@ -716,4 +718,29 @@ inline bool Window::IsWidgetLowered(byte
 	return HasBit(this->widget[widget_index].display_flags, WIDG_LOWERED);
 }
 
+/**
+ * Align widgets a and b next to each other.
+ * @param widget_index_a  the left widget
+ * @param widget_index_b  the right widget (fixed)
+ */
+inline void Window::AlignWidgetRight(byte widget_index_a, byte widget_index_b)
+{
+	assert(widget_index_a < this->widget_count);
+	assert(widget_index_b < this->widget_count);
+	int w = this->widget[widget_index_a].right - this->widget[widget_index_a].left;
+	this->widget[widget_index_a].right = this->widget[widget_index_b].left - 1;
+	this->widget[widget_index_a].left  = this->widget[widget_index_a].right - w;
+}
+
+/**
+ * Get the width of a widget.
+ * @param widget_index  the widget
+ * @return width of the widget
+ */
+inline int Window::GetWidgetWidth(byte widget_index) const
+{
+	assert(widget_index < this->widget_count);
+	return this->widget[widget_index].right - this->widget[widget_index].left + 1;
+}
+
 #endif /* WINDOW_GUI_H */