3.13

Windows/Memory.cpp

@@ -0,0 +1,59 @@
+// Windows/Memory.cpp
+
+#include "StdAfx.h"
+
+#include "Windows/Memory.h"
+
+namespace NWindows {
+namespace NMemory {
+
+CGlobal::~CGlobal()
+{
+  Free();
+}
+
+// aFlags = GMEM_MOVEABLE
+bool CGlobal::Alloc(UINT aFlags, DWORD aSize)
+{
+  HGLOBAL aNewBlock = ::GlobalAlloc(aFlags, aSize);
+  if (aNewBlock == NULL)
+    return false;
+  m_MemoryHandle = aNewBlock;
+  return true;
+}
+
+bool CGlobal::Free()
+{
+  if (m_MemoryHandle == NULL)
+    return true;
+  m_MemoryHandle = ::GlobalFree(m_MemoryHandle);
+  return (m_MemoryHandle == NULL);
+}
+
+HGLOBAL CGlobal::Detach()
+{
+  HGLOBAL aHandle = m_MemoryHandle;
+  m_MemoryHandle = NULL;
+  return aHandle;
+}
+
+LPVOID CGlobal::Lock() const
+{
+  return ::GlobalLock(m_MemoryHandle);
+}
+
+void CGlobal::Unlock() const
+{
+  ::GlobalUnlock(m_MemoryHandle);
+}
+
+bool CGlobal::ReAlloc(DWORD aSize)
+{
+  HGLOBAL aNewBlock = ::GlobalReAlloc(m_MemoryHandle, aSize, GMEM_MOVEABLE);
+  if (aNewBlock == NULL)
+    return false;
+  m_MemoryHandle = aNewBlock;
+  return true;
+}
+
+}}