From: Václav Slavík <vslavik@fastmail.fm>
Date: Mon, 26 Apr 2010 20:51:07 +0000 (+0000)
Subject: Add wxMemoryBuffer::release().
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/8dffb6b1a7ddfbb22667d9544dbe11ca49ca046c?ds=sidebyside

Add wxMemoryBuffer::release().

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64153 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/include/wx/buffer.h b/include/wx/buffer.h
index d9640e25c0..574d0df073 100644
--- a/include/wx/buffer.h
+++ b/include/wx/buffer.h
@@ -468,6 +468,21 @@ private:
             delete this;
     }
 
+    void *release()
+    {
+        if ( m_data == NULL )
+            return NULL;
+
+        wxASSERT_MSG( m_ref == 1, "can't release shared buffer" );
+
+        void *p = m_data;
+        m_data = NULL;
+        m_len =
+        m_size = 0;
+
+        return p;
+    }
+
 
     // the buffer containing the data
     void  *m_data;
@@ -570,6 +585,13 @@ public:
 
     operator const char *() const { return (const char*)GetData(); }
 
+    // gives up ownership of data, returns the pointer; after this call,
+    // data isn't freed by the buffer and its content is resent to empty
+    void *release()
+    {
+        return m_bufdata->release();
+    }
+
 private:
     wxMemoryBufferData*  m_bufdata;
 };