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53 lines
1.8 KiB
C#
53 lines
1.8 KiB
C#
// Device.cs - customizations to Gdk.Device
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//
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// Authors: Manuel V. Santos <mvsl@telefonica.net>
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//
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// Copyright (c) 2004 Manuel V. Santos
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the Lesser GNU General
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// Public License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace Gdk {
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using System;
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using System.Runtime.InteropServices;
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public partial class Device {
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[DllImport ("libgdk-win32-3.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern void gdk_device_free_history(IntPtr events, int n_events);
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[DllImport ("libgdk-win32-3.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern bool gdk_device_get_history(IntPtr device, IntPtr window, uint start, uint stop, out IntPtr events, out int n_events);
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public TimeCoord[] GetHistory (Gdk.Window window, uint start, uint stop)
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{
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IntPtr coords_handle;
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int count;
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if (gdk_device_get_history (Handle, window.Handle, start, stop, out coords_handle, out count)) {
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TimeCoord[] result = new TimeCoord [count];
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for (int i = 0; i < count; i++) {
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IntPtr ptr = Marshal.ReadIntPtr (coords_handle, i + IntPtr.Size);
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result [i] = TimeCoord.New (ptr);
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}
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gdk_device_free_history (coords_handle, count);
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return result;
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} else
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return new TimeCoord [0];
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}
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}
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}
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