/// <summary> The generic callback procedure, that marshals to the widget specific callback procedure. </summary>
/// <param name="widget"> The widget, that initiated the callback procedure. <see cref="System.IntPtr"/> </param>
/// <param name="clientData"> Additional callback data from the client. <see cref="System.IntPtr"/> </param>
/// <param name="callData"> Additional data defined for the call. <see cref="System.IntPtr"/> </param>
/// <remarks> The prototype must match the XtCallbackProc delegate. </remarks>
public static void MarshalCallback(IntPtr widget, IntPtr clientData, IntPtr callData)
{
// Debug code.
// IntPtr hName = Xtlib.XtName (widget);
// string sName = Marshal.PtrToStringAuto(hName);
// Console.WriteLine (CLASS_NAME + "::MarshalCallback () INFORMATION: Widget name is: " + sName);
if (_list.ContainsKey(widget))
{
_list[widget] (widget, clientData, callData);
return;
}
// Subsequent code is an extension for Motif.
// Motif menu bars and menus assign "XmNsimpleCallback" to their child widgets.
IntPtr parentWidget = Xtlib.XtParent(widget);
if (parentWidget != IntPtr.Zero && _list.ContainsKey(parentWidget))
{
_list[parentWidget] (widget, clientData, callData);
return;
}
else
{
// Debug code.
Console.WriteLine(CLASS_NAME + "::MarshalCallback () WARNING: Widget (" + Xtlib.XtNameAsString(widget) + ") pointer and widget's parent pointer are not registered.");
}
}