Added support for 'loading' virtual modules.
diff --git a/include/dbghelp.h b/include/dbghelp.h
index 5c4cec4..44e9be6 100644
--- a/include/dbghelp.h
+++ b/include/dbghelp.h
@@ -643,6 +643,11 @@
 /*************************
  *    MODULE handling    *
  *************************/
+
+/* flags for SymLoadModuleEx */
+#define SLMFLAG_VIRTUAL         0x1
+#define SLMFLAG_NO_SYMBOLS      0x4
+
 typedef BOOL (CALLBACK *PENUMLOADED_MODULES_CALLBACK)(PSTR, DWORD, ULONG, PVOID);
 BOOL   WINAPI EnumerateLoadedModules(HANDLE, PENUMLOADED_MODULES_CALLBACK, PVOID);
 typedef BOOL (CALLBACK *PSYM_ENUMMODULES_CALLBACK)(PSTR, DWORD, PVOID);