Fix issue #167: windows x64 support in _tkagg.so

src/_tkagg.cpp

@@ -34,6 +34,12 @@ extern "C"
 #endif
 }
 
+#if defined(_MSC_VER)
+#  define SIZE_T_FORMAT "%Iu"
+#else
+#  define SIZE_T_FORMAT "%zu"
+#endif
+
 
 
 typedef struct
@@ -53,7 +59,7 @@ PyAggImagePhoto(ClientData clientdata, Tcl_Interp* interp,
     // vars for blitting
     PyObject* bboxo;
 
-    unsigned long aggl, bboxl;
+    size_t aggl, bboxl;
     bool has_bbox;
     agg::int8u *destbuffer;
     double l, b, r, t;
@@ -83,7 +89,7 @@ PyAggImagePhoto(ClientData clientdata, Tcl_Interp* interp,
         return TCL_ERROR;
     }
     /* get array (or object that can be converted to array) pointer */
-    if (sscanf(argv[2], "%lu", &aggl) != 1)
+    if (sscanf(argv[2], SIZE_T_FORMAT, &aggl) != 1)
     {
         Tcl_AppendResult(interp, "error casting pointer", (char *) NULL);
         return TCL_ERROR;
@@ -109,7 +115,7 @@ PyAggImagePhoto(ClientData clientdata, Tcl_Interp* interp,
     }
 
     /* check for bbox/blitting */
-    if (sscanf(argv[4], "%lu", &bboxl) != 1)
+    if (sscanf(argv[4], SIZE_T_FORMAT, &bboxl) != 1)
     {
         Tcl_AppendResult(interp, "error casting pointer", (char *) NULL);
         return TCL_ERROR;