Import r67258 of the wxWidgets trunk, which I expect will before

long become wxWidgets 2.9.2, which in turn is expected to be the
last 2.9 release before the 3.0 stable release.

Since the full wxWidgets distribution is rather large, I have
imported only the parts that we use, on a subdirectory basis:

art
include/wx/*.*
include/wx/aui
include/wx/cocoa
include/wx/generic
include/wx/gtk
include/wx/meta
include/wx/msw
include/wx/osx
include/wx/persist
include/wx/private
include/wx/protocol
include/wx/unix
src/aui
src/common
src/generic
src/gtk
src/msw
src/osx
src/unix


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7380 8ced0084-cf51-0410-be5f-012b33b47a6e

Externals/wxWidgets3/include/wx/msw/private/metrics.h

@@ -0,0 +1,49 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/msw/private/metrics.h
+// Purpose:     various helper functions to retrieve system metrics
+// Author:      Vadim Zeitlin
+// Created:     2008-09-05
+// RCS-ID:      $Id: metrics.h 61508 2009-07-23 20:30:22Z VZ $
+// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_MSW_PRIVATE_METRICS_H_
+#define _WX_MSW_PRIVATE_METRICS_H_
+
+namespace wxMSWImpl
+{
+
+// return NONCLIENTMETRICS as retrieved by SystemParametersInfo()
+//
+// currently this is not cached as the values may change when system settings
+// do and we don't react to this to invalidate the cache but it could be done
+// in the future
+//
+// MT-safety: this function is only meant to be called from the main thread
+inline const NONCLIENTMETRICS& GetNonClientMetrics()
+{
+    static WinStruct<NONCLIENTMETRICS> nm;
+    if ( !::SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, &nm, 0) )
+    {
+#if WINVER >= 0x0600
+        // a new field has been added to NONCLIENTMETRICS under Vista, so
+        // the call to SystemParametersInfo() fails if we use the struct
+        // size incorporating this new value on an older system -- retry
+        // without it
+        nm.cbSize -= sizeof(int);
+        if ( !::SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, &nm, 0) )
+#endif // WINVER >= 0x0600
+        {
+            // maybe we should initialize the struct with some defaults?
+            wxLogLastError(wxT("SystemParametersInfo(SPI_GETNONCLIENTMETRICS)"));
+        }
+    }
+
+    return nm;
+}
+
+} // namespace wxMSWImpl
+
+#endif // _WX_MSW_PRIVATE_METRICS_H_
+