From 5dc43d1fc5bdac58ac689364b74118ea67285305 Mon Sep 17 00:00:00 2001
From: =?utf8?q?V=C3=A1clav=20Slav=C3=ADk?= <vslavik@fastmail.fm>
Date: Sun, 20 Jun 2004 17:19:26 +0000
Subject: [PATCH] create wxTheClipboard on first use, not startup -- this fixes
 crash in console-only apps that were linked against wxGTK's 'core' shared
 library

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27914 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/clipbrd.h   | 19 ++++++++++--------
 src/common/clipcmn.cpp | 45 +++++++++++++-----------------------------
 2 files changed, 25 insertions(+), 39 deletions(-)

diff --git a/include/wx/clipbrd.h b/include/wx/clipbrd.h
index 3de8f49cf8..f4c29ba4b7 100644
--- a/include/wx/clipbrd.h
+++ b/include/wx/clipbrd.h
@@ -26,6 +26,7 @@
 
 class WXDLLEXPORT wxDataFormat;
 class WXDLLEXPORT wxDataObject;
+class WXDLLEXPORT wxClipboard;
 
 // ----------------------------------------------------------------------------
 // wxClipboard represents the system clipboard. Normally, you should use
@@ -38,7 +39,7 @@ class WXDLLEXPORT wxDataObject;
 class WXDLLEXPORT wxClipboardBase : public wxObject
 {
 public:
-    wxClipboardBase();
+    wxClipboardBase() {}
 
     // open the clipboard before Add/SetData() and GetData()
     virtual bool Open() = 0;
@@ -76,8 +77,17 @@ public:
     // X11 has two clipboards which get selected by this call. Empty on MSW.
     virtual void UsePrimarySelection( bool WXUNUSED(primary) = FALSE ) { }
 
+    // Returns global instance (wxTheClipboard) of the object:
+    static wxClipboard *Get();
 };
 
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+// The global clipboard object - backward compatible access macro:
+#define wxTheClipboard   (wxClipboard::Get())
+
 // ----------------------------------------------------------------------------
 // include platform-specific class declaration
 // ----------------------------------------------------------------------------
@@ -100,13 +110,6 @@ public:
     #include "wx/os2/clipbrd.h"
 #endif
 
-// ----------------------------------------------------------------------------
-// globals
-// ----------------------------------------------------------------------------
-
-// The global clipboard object
-WXDLLEXPORT_DATA(extern wxClipboard *) wxTheClipboard;
-
 // ----------------------------------------------------------------------------
 // helpful class for opening the clipboard and automatically closing it
 // ----------------------------------------------------------------------------
diff --git a/src/common/clipcmn.cpp b/src/common/clipcmn.cpp
index bbb7b68c67..f253ccb9c1 100644
--- a/src/common/clipcmn.cpp
+++ b/src/common/clipcmn.cpp
@@ -33,49 +33,32 @@
 
 #if wxUSE_CLIPBOARD
 
+static wxClipboard *gs_clipboard = NULL;
+
+/*static*/ wxClipboard *wxClipboardBase::Get()
+{
+    if ( !gs_clipboard )
+    {
+        gs_clipboard = new wxClipboard;
+    }
+    return gs_clipboard;
+}
+
 // ----------------------------------------------------------------------------
-// wxClipboardModule: module responsible for initializing the global clipboard
+// wxClipboardModule: module responsible for destroying the global clipboard
 // object
 // ----------------------------------------------------------------------------
 
 class wxClipboardModule : public wxModule
 {
 public:
-    bool OnInit();
-    void OnExit();
+    bool OnInit() { return true; }
+    void OnExit() { wxDELETE(gs_clipboard); }
 
 private:
     DECLARE_DYNAMIC_CLASS(wxClipboardModule)
 };
 
-// ----------------------------------------------------------------------------
-// global data defined here
-// ----------------------------------------------------------------------------
-
 IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule, wxModule)
 
-wxClipboard* wxTheClipboard = (wxClipboard *)NULL;
-
-// ----------------------------------------------------------------------------
-// implementation
-// ----------------------------------------------------------------------------
-
-wxClipboardBase::wxClipboardBase()
-{
-}
-
-bool wxClipboardModule::OnInit()
-{
-    wxTheClipboard = new wxClipboard;
-
-    return TRUE;
-}
-
-void wxClipboardModule::OnExit()
-{
-    delete wxTheClipboard;
-
-    wxTheClipboard = (wxClipboard *)NULL;
-}
-
 #endif // wxUSE_CLIPBOARD
-- 
2.45.2