wx: Fix callback problems

Commands could be executed twice, if the command was dispatched
from a callback and caused a recursive invocation of command loop.
Solution is to mark op as -1 before calling wxWidgets.

Also commands could be missed when idle processing was done inside
while executing a recursive callback, solved be always resetting peak
index after idle processing is done.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/wx/c_src/wxe_helpers.h b/lib/wx/c_src/wxe_helpers.h
index 3f66b6d97a..70ffccdc13 100644
--- a/lib/wx/c_src/wxe_helpers.h
+++ b/lib/wx/c_src/wxe_helpers.h
@@ -46,7 +46,7 @@ class wxeCommand
     wxeCommand();
     virtual ~wxeCommand(); // Use Delete()
 
-    wxeCommand * Save() { return this; };
+    wxeCommand * Save(int Op) { op = Op; return this; };
     void Delete();
 
     ErlDrvTermData   caller;