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add Scroll event to VirtualListView

This commit is contained in:
zeromus 2012-03-10 18:42:19 +00:00
parent 3e67e78da2
commit be2d7120fb
1 changed files with 17 additions and 0 deletions
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17
BizHawk.Util/VirtualListView.cs
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@ -201,6 +201,7 @@ namespace BizHawk
internal enum WindowsMessage : uint {
WM_ERASEBKGND = 0x0014,
WM_SCROLL = 0x115,
WM_LBUTTONDOWN = 0x0201,
WM_LBUTTONUP = 0x0202,
WM_LBUTTONDBLCLK = 0x0203,
@ -507,6 +508,16 @@ namespace BizHawk
break;
}
}
/// <summary>
/// Event to be fired whenever the control scrolls
/// </summary>
public event ScrollEventHandler Scroll;
protected virtual void OnScroll(ScrollEventArgs e)
{
ScrollEventHandler handler = this.Scroll;
if (handler != null) handler(this, e);
}
protected override void WndProc(ref System.Windows.Forms.Message m) {
NMHDR nm1;
@ -536,6 +547,12 @@ namespace BizHawk
}
break;
case (int)WindowsMessage.WM_SCROLL:
//http://stackoverflow.com/questions/1851620/handling-scroll-event-on-listview-in-c-sharp
OnScroll(new ScrollEventArgs((ScrollEventType)(m.WParam.ToInt32() & 0xffff), 0));
break;
//obscure message loop flakiness when exceptions are thrown from the message loop...
//THIS BREAKS PROPER LISTVIEW FOCUS SELECTION (blue)
//next time we run into this, debug it better.