/// <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.");
}
}
// ###############################################################################
// ### M E T H O D S
// ###############################################################################
#region Methods
/// <summary> Add a widget specific callback registration. </summary>
/// <param name="widget"> The widget to register the callback for. <see cref="System.IntPtr"/> </param>
/// <param name="callback"> The callback to execute. <see cref="XtCallbackProc"/> </param>
/// <returns> The managed code to native code marshalable generic callback procedure. <see cref="System.IntPtr"/> </returns>
public static IntPtr Add(IntPtr widget, XtCallbackProc callback)
{
if (widget == IntPtr.Zero)
{
Console.WriteLine(CLASS_NAME + "::Add () WARNING: Widget is zero.");
}
if (callback == null)
{
Console.WriteLine(CLASS_NAME + "::Add () WARNING: Callback is zero.");
}
if (_list.ContainsKey(widget))
{
// Debug code.
Console.WriteLine(CLASS_NAME + "::Add() WARNING: Callback already registered for widget (" + Xtlib.XtNameAsString(widget) + "). Perform refresh.");
_list[widget] = callback;
}
else
{
_list.Add(widget, callback);
}
return(_callbackPtr);
}
/// <summary> The generic callback procedure, that marshals to the widget specific callback procedure. </summary>
/// <param name="widget"> The widget, that is source of the event. <see cref="System.IntPtr"/> </param>
/// <param name="xevent"> The event, that is invoked. <see cref="XEvent"/> </param>
/// <param name="parameters"> Additional parameters (as String[]). <see cref="System.IntPtr"/> </param>
/// <param name="num_params"> The number of additional parameters. <see cref="XCardinal"/> </param>
/// <remarks> The prototype must match the XtActionProc delegate. </remarks>
public static void MarshalAction(IntPtr widget, ref X11.XEvent xevent, IntPtr parameters, ref X11.XCardinal num_params)
{
ActionKey actionKey = new ActionKey(widget, xevent.type);
if (_list.ContainsKey(actionKey))
{
_list[actionKey] (widget, ref xevent, parameters, ref num_params);
}
else
{
// Debug code.
Console.WriteLine(CLASS_NAME + "::MarshalAction () WARNING: Widget (" + Xtlib.XtNameAsString(widget) + ") pointer is not registered.");
}
}