Put wxContextHelp into cshelp.h/cpp, added wxContextHelpButton

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8294 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/cshelp.h

@@ -0,0 +1,74 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        cshelp.h
+// Purpose:     Context-sensitive help classes
+// Author:      Julian Smart
+// Modified by:
+// Created:     08/09/2000
+// RCS-ID:      $Id$
+// Copyright:   (c) Julian Smart
+// Licence:   	wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_CSHELPH__
+#define _WX_CSHELPH__
+
+#ifdef __GNUG__
+#pragma interface "cshelp.h"
+#endif
+
+#include "wx/defs.h"
+
+#if wxUSE_HELP
+
+#include "wx/bmpbuttn.h"
+
+/*
+ * wxContextHelp
+ * Invokes context-sensitive help. When the user
+ * clicks on a window, a wxEVT_HELP event will be sent to that
+ * window for the application to display help for.
+ */
+
+class WXDLLEXPORT wxContextHelp: public wxObject
+{
+    DECLARE_DYNAMIC_CLASS(wxContextHelp)
+public:
+    wxContextHelp(wxWindow* win = NULL, bool beginHelp = TRUE);
+    ~wxContextHelp();
+
+    bool BeginContextHelp(wxWindow* win);
+    bool EndContextHelp();
+
+    bool EventLoop();
+    bool DispatchEvent(wxWindow* win, const wxPoint& pt);
+
+    void SetStatus(bool status) { m_status = status; }
+
+protected:
+
+    bool    m_inHelp;
+    bool    m_status; // TRUE if the user left-clicked
+};
+
+/*
+ * wxContextHelpButton
+ * You can add this to your dialogs (especially on non-Windows platforms)
+ * to put the application into context help mode.
+ */
+
+class WXDLLEXPORT wxContextHelpButton: public wxBitmapButton
+{
+public:
+    wxContextHelpButton(wxWindow* parent, wxWindowID id = wxID_CONTEXT_HELP,
+        const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxSize(20, -1),
+        long style = wxBU_AUTODRAW);
+
+    void OnContextHelp(wxCommandEvent& event);
+
+    DECLARE_CLASS(wxContextHelpButton)
+    DECLARE_EVENT_TABLE()
+};
+
+#endif // wxUSE_HELP
+#endif
+// _WX_CSHELPH__