corrected control inheritance

[wxWidgets.git] / include / wx / clipbrd.h

diff --git a/include/wx/clipbrd.h b/include/wx/clipbrd.h
index 47f0af66b5e441b4964cee32ed42dbb8f3eac47b..d04fa7df9ab3ed415aacf80ea3601727217b69e4 100644 (file)
--- a/include/wx/clipbrd.h
+++ b/include/wx/clipbrd.h
@@ -46,6 +46,9 @@ public:
     // close the clipboard after Add/SetData() and GetData()
     virtual void Close() = 0;
 
+    // query whether the clipboard is opened
+    virtual bool IsOpened() const = 0;
+
     // add to the clipboard data
     //
     // NB: the clipboard owns the pointer and will delete it, so data must be
@@ -85,6 +88,8 @@ public:
     #include "wx/motif/clipbrd.h"
 #elif defined(__WXGTK__)
     #include "wx/gtk/clipbrd.h"
+#elif defined(__WXMGL__)
+    #include "wx/mgl/clipbrd.h"
 #elif defined(__WXQT__)
     #include "wx/gtk/clipbrd.h"
 #elif defined(__WXMAC__)
@@ -102,6 +107,36 @@ public:
 // The global clipboard object
 WXDLLEXPORT_DATA(extern wxClipboard *) wxTheClipboard;
 
+// ----------------------------------------------------------------------------
+// helpful class for opening the clipboard and automatically closing it
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxClipboardLocker
+{
+public:
+    wxClipboardLocker(wxClipboard *clipboard = (wxClipboard *)NULL)
+    {
+        m_clipboard = clipboard ? clipboard : wxTheClipboard;
+        if ( m_clipboard )
+        {
+            m_clipboard->Open();
+        }
+    }
+
+    bool operator!() const { return !m_clipboard->IsOpened(); }
+
+    ~wxClipboardLocker()
+    {
+        if ( m_clipboard )
+        {
+            m_clipboard->Close();
+        }
+    }
+
+private:
+    wxClipboard *m_clipboard;
+};
+
 #endif // wxUSE_CLIPBOARD
 
 #endif // _WX_CLIPBRD_H_BASE_