Upgrade WX to r74856, mainly to support @2x.

Externals/wxWidgets3/include/wx/msw/evtloopconsole.h

@@ -0,0 +1,51 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/msw/evtloopconsole.h
+// Purpose:     wxConsoleEventLoop class for Windows
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     2004-07-31
+// Copyright:   (c) 2003-2004 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_MSW_EVTLOOPCONSOLE_H_
+#define _WX_MSW_EVTLOOPCONSOLE_H_
+
+class WXDLLIMPEXP_BASE wxMSWEventLoopBase : public wxEventLoopManual
+{
+public:
+    wxMSWEventLoopBase();
+
+    // implement base class pure virtuals
+    virtual bool Pending() const;
+
+protected:
+    // get the next message from queue and return true or return false if we
+    // got WM_QUIT or an error occurred
+    bool GetNextMessage(WXMSG *msg);
+
+    // same as above but with a timeout and return value can be -1 meaning that
+    // time out expired in addition to
+    int GetNextMessageTimeout(WXMSG *msg, unsigned long timeout);
+};
+
+#if wxUSE_CONSOLE_EVENTLOOP
+
+class WXDLLIMPEXP_BASE wxConsoleEventLoop : public wxMSWEventLoopBase
+{
+public:
+    wxConsoleEventLoop() { }
+
+    // override/implement base class virtuals
+    virtual bool Dispatch();
+    virtual int DispatchTimeout(unsigned long timeout);
+    virtual void WakeUp();
+    virtual bool YieldFor(long WXUNUSED(eventsToProcess)) { return true; }
+
+    // Windows-specific function to process a single message
+    virtual void ProcessMessage(WXMSG *msg);
+};
+
+#endif // wxUSE_CONSOLE_EVENTLOOP
+
+#endif // _WX_MSW_EVTLOOPCONSOLE_H_