36 lines
924 B
C#
36 lines
924 B
C#
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// Copyright (c) 2012-2021 fo-dicom contributors.
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// Licensed under the Microsoft Public License (MS-PL).
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using System.Windows.Forms;
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namespace FellowOakDicom.Samples.Compare
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{
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internal class ListViewEx : ListView
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{
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private const int WM_VSCROLL = 0x0115;
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private const int WM_MOUSEWHEEL = 0x020A;
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public event ScrollEventHandler Scroll;
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protected virtual void OnScroll(ScrollEventArgs e)
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{
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Scroll?.Invoke(this, e);
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}
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protected override void WndProc(ref Message m)
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{
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base.WndProc(ref m);
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if (m.Msg == WM_VSCROLL)
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{
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OnScroll(new ScrollEventArgs((ScrollEventType)(m.WParam.ToInt32() & 0xffff), 0));
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}
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else if (m.Msg == WM_MOUSEWHEEL)
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{
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OnScroll(new ScrollEventArgs(ScrollEventType.EndScroll, 0));
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}
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}
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}
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}
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