Merge pull request #34 from KOLANICH/win_ghostscript_callback_fix

Fixed calling convention of callback functions

camelot/ext/ghostscript/_gsprint.py

@@ -81,7 +81,9 @@ def delete_instance(instance):
     """
     return libgs.gsapi_delete_instance(instance)
 
-
+if sys.platform == "win32":
+    c_stdstream_call_t = WINFUNCTYPE(c_int, gs_main_instance, POINTER(c_char), c_int)
+else:
     c_stdstream_call_t = CFUNCTYPE(c_int, gs_main_instance, POINTER(c_char), c_int)