chore: remove compiler warnings

  Most warnings were caused by deprecated std library templates,
  especially std::mem_fun, std::bind1st, and std::bind2nd. These
  are replaced by their modern versions, std::mem_fn and std::bind.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/FbTk/Container.hh b/src/FbTk/Container.hh
index 2dc6475..1d3547a 100644
--- a/src/FbTk/Container.hh
+++ b/src/FbTk/Container.hh
@@ -90,7 +90,7 @@ public:
     unsigned int maxWidthPerClient() const;
     bool updateLock() const { return m_update_lock; }
 
-    void for_each(std::mem_fun_t<void, FbWindow> function);
+    void for_each(std::function<void(Item)> function);
     void setAlpha(int alpha); // set alpha on all windows
 
     ItemList::iterator begin() { return m_item_list.begin(); }