fix wxBitmapComboBox Gtk-CRITICAL assertion `GTK_IS_ENTRY (entry)' failed

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

diff --git a/include/wx/buffer.h b/include/wx/buffer.h
index 254605edf72ebbd70d8a75288281d605fe232b50..951777a13c47fd9fe74544ebf843056fde0c812c 100644 (file)
--- a/include/wx/buffer.h
+++ b/include/wx/buffer.h
@@ -15,9 +15,7 @@
 #include "wx/chartype.h"
 #include "wx/wxcrtbase.h"
 
-#ifndef __WXPALMOS5__
 #include <stdlib.h>             // malloc() and free()
-#endif // ! __WXPALMOS5__
 
 class WXDLLIMPEXP_FWD_BASE wxCStrData;
 
@@ -232,7 +230,8 @@ protected:
     static CharType *StrCopy(const CharType *src, size_t len)
     {
         CharType *dst = (CharType*)malloc(sizeof(CharType) * (len + 1));
-        memcpy(dst, src, sizeof(CharType) * (len + 1));
+        if ( dst )
+            memcpy(dst, src, sizeof(CharType) * (len + 1));
         return dst;
     }
 
@@ -314,6 +313,10 @@ public:
         if ( !str )
             return false;
 
+        // For consistency with the ctor taking just the length, NUL-terminate
+        // the buffer.
+        str[len] = (CharType)0;
+
         if ( this->m_data == this->GetNullData() )
         {
             this->m_data = new Data(str, len);
@@ -436,7 +439,7 @@ public:
 
     friend class wxMemoryBuffer;
 
-    // everyting is private as it can only be used by wxMemoryBuffer
+    // everything is private as it can only be used by wxMemoryBuffer
 private:
     wxMemoryBufferData(size_t size = wxMemoryBufferData::DefBufSize)
         : m_data(size ? malloc(size) : NULL), m_size(size), m_len(0), m_ref(0)
@@ -537,6 +540,8 @@ public:
     size_t GetBufSize() const { return m_bufdata->m_size; }
     size_t GetDataLen() const { return m_bufdata->m_len; }
 
+    bool IsEmpty() const { return GetDataLen() == 0; }
+
     void   SetBufSize(size_t size) { m_bufdata->ResizeIfNeeded(size); }
     void   SetDataLen(size_t len)
     {
@@ -544,6 +549,8 @@ public:
         m_bufdata->m_len = len;
     }
 
+    void Clear() { SetDataLen(0); }
+
     // Ensure the buffer is big enough and return a pointer to it
     void *GetWriteBuf(size_t sizeNeeded)
     {