1 files changed, 1 insertions, 0 deletions

diff --git a/src/w32term.h b/src/w32term.h
index 0cfa6ffce5b..869c1df1847 100644
--- a/src/w32term.h
+++ b/src/w32term.h
@@ -31,6 +31,7 @@ Boston, MA 02111-1307, USA.  */
 #define FONT_WIDTH(f)   ((f)->tm.tmAveCharWidth)
 #define FONT_HEIGHT(f)  ((f)->tm.tmHeight)
 #define FONT_BASE(f)    ((f)->tm.tmAscent)
+#define FONT_MAX_WIDTH(f) ((f)->tm.tmMaxCharWidth)
 
 #define CHECK_W32_FRAME(f, frame)               \
   if (NILP (frame))                             \