--- a/WinPrinterContext.st	Tue May 19 06:56:12 2015 +0200
+++ b/WinPrinterContext.st	Thu Jun 25 15:10:13 2015 +0100
@@ -211,6 +211,11 @@
 
 typedef int (*intf)(int);
 typedef INT (*INTF)(INT);
+
+/* PS_JOIN_MASK is missing from the mingw32 headers */
+#ifndef PS_JOIN_MASK
+# define PS_JOIN_MASK (PS_JOIN_BEVEL|PS_JOIN_MITER|PS_JOIN_ROUND)
+#endif
 %}
 ! !