IME input bug?

static void processCharMessage( WPARAM wParam, LPARAM lParam )
{
  ....
   InputEvent event;

   event.deviceInst = 0;
   event.deviceType = KeyboardDeviceType;
   event.objType    = SI_KEY;
   event.action     = SI_MAKE;
   event.ascii      = charCode;

   // Deal with some silly cases like <BS>. This might be indicative of a 
   // missing MapVirtualKey step, not quite sure how to deal with this.
   if(event.ascii == 0x8)
      event.objInst = KEY_BACKSPACE; //  Note we abuse objInst.

   Game->postEvent(event);
  ....
}

....

bool GuiTextEditCtrl::onKeyDown(const GuiEvent &event)
{
   .....
   else if (event.modifier & SI_CTRL)
   {
     .....; Must arrive here!
   }
   .....
   if ( mFont->isValidChar( event.ascii ) )
   {
     ....; Never arrive here!
   }
}

InputEvent() { type = InputEventType; size = sizeof(InputEvent); dMemset(touchesX, 0, sizeof(touchesX)); 
                                                                 dMemset(touchesY, 0, sizeof(touchesY));
                                                                 dMemset(touchIDs, 0, sizeof(touchIDs));}