如何创建和触发 Gdk.EventKey

Question

我有一个 Gtk.Window 覆盖 OnKeyPressEvent

protected override bool OnKeyPressEvent(Gdk.EventKey evt)
{
    Console.WriteLine("Captured key " + evt.Key);
    return base.OnKeyPressEvent(evt);
}

所以我能够捕捉到 "real" 键盘操作。

现在我想创建一个类似于虚拟键盘的东西（由简单的按钮组成）。但是我没有找到任何关于触发自己的关键事件的信息。

谁能告诉我如何使用 GTK# 以编程方式触发按键，以便在我的 OnKeyPressEvent 中处理该操作？

Answer 1

我终于找到了解决办法。

如果您知道其他解决方案（可能没有本机代码），请告诉我:)

[StructLayout(LayoutKind.Sequential)]
public struct EventKeyStruct
{
    public EventType type;
    public IntPtr window;
    public sbyte send_event;

    public uint time;
    public uint state;
    public uint keyval;
    public uint length;
    public string str;
    public ushort hardware_keycode;
    public byte group;
    public uint is_modifier;
}


public static void SendKeyEvent(Gtk.Widget widget, Gdk.Key key)
{
    uint keyval = (uint)key;
    Gdk.Window window = widget.GdkWindow;
    Gdk.KeymapKey[] keymap = Gdk.Keymap.Default.GetEntriesForKeyval(keyval);

    EventKeyStruct native = new EventKeyStruct();
    native.type = Gdk.EventType.KeyPress;
    native.window = window.Handle;
    native.send_event = 1;
    native.state = (uint)Gdk.EventMask.KeyPressMask;
    native.keyval = keyval;
    native.length = 0;
    native.str = null;
    native.hardware_keycode = (ushort)keymap[0].Keycode;
    native.group = (byte)keymap[0].Group;

    IntPtr ptr = GLib.Marshaller.StructureToPtrAlloc(native);
    try
    {
        EventKey evnt = new EventKey(ptr);
        EventHelper.Put(evnt);
    }
    finally
    {
        //GLib.Marshaller.Free(ptr); //comment because otherwise it crashes here?
    }
}

如何创建和触发 Gdk.EventKey

How to create and fire a Gdk.EventKey

c#

mono

gtk#

keyevent