added wxTLS_TYPE() macro

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55019 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/tls.h

@@ -0,0 +1,73 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/unix/tls.h
+// Purpose:     Win32 implementation of wxTlsValue<>
+// Author:      Vadim Zeitlin
+// Created:     2008-08-08
+// RCS-ID:      $Id$
+// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_MSW_TLS_H_
+#define _WX_MSW_TLS_H_
+
+#include "wx/log.h"
+
+#include "wx/msw/wrapwin.h"
+
+// ----------------------------------------------------------------------------
+// wxTlsKey is a helper class encapsulating a TLS slot
+// ----------------------------------------------------------------------------
+
+class wxTlsKey
+{
+public:
+    // ctor allocates a new key
+    wxTlsKey()
+    {
+        m_slot = ::TlsAlloc();
+        if ( m_slot == TLS_OUT_OF_INDEXES )
+            wxLogError("Creating TLS key failed");
+    }
+
+    // return true if the key was successfully allocated
+    bool IsOk() const { return m_slot != TLS_OUT_OF_INDEXES; }
+
+    // get the key value, there is no error return
+    void *Get() const
+    {
+        return ::TlsGetValue(m_slot);
+    }
+
+    // change the key value, return true if ok
+    bool Set(void *value)
+    {
+        if ( !::TlsSetValue(m_slot, value) )
+        {
+            wxLogSysError(_("Failed to set TLS value"));
+            return false;
+        }
+
+        return true;
+    }
+
+    // free the key
+    ~wxTlsKey()
+    {
+        if ( IsOk() )
+        {
+            if ( !::TlsFree(m_slot) )
+            {
+                wxLogDebug("TlsFree() failed: %08x", ::GetLastError());
+            }
+        }
+    }
+
+private:
+    DWORD m_slot;
+
+    DECLARE_NO_COPY_CLASS(wxTlsKey)
+};
+
+#endif // _WX_MSW_TLS_H_
+