+// --- Window creation/deletion
+/**
+ * \brief Create a new window (with the required client structures)
+ * \param Parent Parent window handle
+ * \param Renderer Symbolic name of the renderer to use
+ * \param RendererArg Argument to pass to the renderer's initialisation
+ * \param DataBytes Number of bytes to allocate for the caller's use
+ * \param MessageHandler Function to call when a message arrives for the window
+ * \return New window handle
+ * \note Usually wrapped by renderer-specific functions
+ */
+extern tHWND AxWin3_CreateWindow(
+ tHWND Parent,
+ const char *Renderer, int RendererArg,
+ int DataBytes,
+ tAxWin3_WindowMessageHandler MessageHandler
+ );
+/**
+ * \brief Destroy a window
+ * \param Window Handle to a window to destroy
+ */