Index: drivers/wxwidgets.cpp
===================================================================
--- drivers/wxwidgets.cpp	(revision 12270)
+++ drivers/wxwidgets.cpp	(working copy)
@@ -480,8 +499,7 @@
     plP_setpxl( (PLFLT) VIRTUAL_PIXELS_PER_MM, (PLFLT) VIRTUAL_PIXELS_PER_MM );
 
     // Set up physical limits of plotting device (in drawing units)
-    plP_setphy( (PLINT) 0, (PLINT) ( CANVAS_WIDTH * VIRTUAL_PIXELS_PER_IN ),
-        (PLINT) 0, (PLINT) ( CANVAS_HEIGHT * VIRTUAL_PIXELS_PER_IN ) );
+    plP_setphy( (PLINT) 0, dev->width, (PLINT) 0, dev->height );
 
     // get physical device limits coordinates
     plP_gphy( &dev->xmin, &dev->xmax, &dev->ymin, &dev->ymax );