protected override void WndProc(ref Message m)
{
if (m.Msg == 0x2000 + 0x004E) // [reflected] WM_NOTIFY
{
uint nmhdrCode = (uint)Marshal.ReadInt32(m.LParam, NmHdrCodeOffset);
if (nmhdrCode == LVN_ITEMCHANGING)
{
NMLISTVIEW nmlv = (NMLISTVIEW)Marshal.PtrToStructure(m.LParam, typeof(NMLISTVIEW));
if ((nmlv.uChanged & LVIF_STATE) != 0)
{
bool currentSel = (nmlv.uOldState & LVIS_SELECTED) == LVIS_SELECTED;
bool newSel = (nmlv.uNewState & LVIS_SELECTED) == LVIS_SELECTED;
if (newSel != currentSel)
{
ItemSelectionChangingEventArgs e = new ItemSelectionChangingEventArgs(nmlv.iItem, newSel, currentSel);
OnItemSelectionChanging(e);
m.Result = e.Cancel ? (IntPtr)1 : IntPtr.Zero;
return;
}
}
}
}
base.WndProc(ref m);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == OCM_NOTIFY)
{
NMHDR nm = (NMHDR)m.GetLParam(typeof(NMHDR));
if (nm.code == LVN_ITEMCHANGING)
{
NMLISTVIEW nmlv = (NMLISTVIEW)m.GetLParam(typeof(NMLISTVIEW));
ItemStateChanging(ref m, ref nmlv);
}
}
base.WndProc(ref m);
}
private void ItemStateChanging(ref Message m, ref NMLISTVIEW nmlv)
{
if ((nmlv.uChanged & LVIF_STATE) == LVIF_STATE)
{
if ((nmlv.uOldState == LVIS_SELECTED) || //FROM ITEM
(nmlv.uNewState == LVIS_UNSELECTED))
{
if (m_cancel)
{
m.Result = new IntPtr(1);
m_cancel = false;
}
else
{
if ((nmlv.uOldState == LVIS_SELECTED) && //FROM ITEM
(nmlv.uNewState == LVIS_UNSELECTED))
{
ItemChangingEventArgs e = new ItemChangingEventArgs(nmlv.iItem, this.Items[nmlv.iItem]);
OnItemDeselecting(e);
if (e.Cancel)
{
m.Result = new IntPtr(1);
m_cancel = true;
}
}
}
}
else if ((nmlv.uOldState == LVIS_UNSELECTED) || //TO ITEM
(nmlv.uNewState == LVIS_SELECTED) ||
(nmlv.uNewState == LVIS_SELECTED_FOCUSED))
{
if (m_cancel)
{
m.Result = new IntPtr(1);
m_cancel = false;
}
}
}
}
protected override bool OnShellViewNotify(NMHDR nmhdr, ref Message msg)
{
// Process WM.NOTIFY. These are all notifications from the
// SysListView32 control. We will not get ANY of these on
// Windows 7, which means every single one of them has to
// have an alternative somewhere for the ItemsView control,
// or it's not going to happen.
switch (nmhdr.code)
{
case -12: // NM_CUSTOMDRAW
// This is for drawing alternating row colors. I doubt
// very much we'll find an alternative for this...
return(HandleCustomDraw(ref msg));
case LVN.ITEMCHANGED: {
// There are two things happening here.
// 1. Notify plugins of selection changing: Handled through
// undocumented WM_USER+163 message
// 2. Redraw for Full Row Select: Not happening
/*
* // TODO
*
* IntPtr ptr;
* if(QTUtility.instanceManager.TryGetButtonBarHandle(this.hwndExplorer, out ptr)) {
* QTUtility2.SendCOPYDATASTRUCT(ptr, (IntPtr)13, null, (IntPtr)GetItemCount());
* }
*/
bool flag = !QTUtility.IsXP && QTUtility.CheckConfig(Settings.ToggleFullRowSelect);
NMLISTVIEW nmlistview2 = (NMLISTVIEW)Marshal.PtrToStructure(msg.LParam, typeof(NMLISTVIEW));
if (nmlistview2.uChanged == 8 /*LVIF_STATE*/)
{
uint num5 = nmlistview2.uNewState & LVIS.SELECTED;
uint num6 = nmlistview2.uOldState & LVIS.SELECTED;
uint num7 = nmlistview2.uNewState & LVIS.DROPHILITED;
uint num8 = nmlistview2.uOldState & LVIS.DROPHILITED;
uint num9 = nmlistview2.uNewState & LVIS.CUT;
uint num10 = nmlistview2.uOldState & LVIS.CUT;
if (flag)
{
if (nmlistview2.iItem != -1 && ((num5 != num6) || (num7 != num8) || (num9 != num10)) && ShellBrowser.ViewMode == FVM.DETAILS)
{
PInvoke.SendMessage(nmlistview2.hdr.hwndFrom, LVM.REDRAWITEMS, (IntPtr)nmlistview2.iItem, (IntPtr)nmlistview2.iItem);
}
}
if (num5 != num6)
{
OnSelectionChanged();
}
}
break;
}
case LVN.INSERTITEM:
case LVN.DELETEITEM:
// Handled through undocumented WM_USER+174 message
if (!QTUtility.CheckConfig(Settings.NoShowSubDirTips))
{
HideSubDirTip(1);
}
if (QTUtility.CheckConfig(Settings.AlternateRowColors) && (ShellBrowser.ViewMode == FVM.DETAILS))
{
PInvoke.InvalidateRect(nmhdr.hwndFrom, IntPtr.Zero, true);
}
ShellViewController.DefWndProc(ref msg);
OnItemCountChanged();
return(true);
case LVN.BEGINDRAG:
// This won't be necessary it seems. On Windows 7, when you
// start to drag, a MOUSELEAVE message is sent, which hides
// the SubDirTip anyway.
ShellViewController.DefWndProc(ref msg);
HideSubDirTip(0xff);
return(true);
case LVN.ITEMACTIVATE: {
// Handled by catching Double Clicks and Enter keys. Ugh...
NMITEMACTIVATE nmitemactivate = (NMITEMACTIVATE)Marshal.PtrToStructure(msg.LParam, typeof(NMITEMACTIVATE));
Keys modKeys =
(((nmitemactivate.uKeyFlags & 1) == 1) ? Keys.Alt : Keys.None) |
(((nmitemactivate.uKeyFlags & 2) == 2) ? Keys.Control : Keys.None) |
(((nmitemactivate.uKeyFlags & 4) == 4) ? Keys.Shift : Keys.None);
if (OnItemActivated(modKeys))
{
return(true);
}
break;
}
case LVN.ODSTATECHANGED:
// FullRowSelect doesn't look possible anyway, so whatever.
if (!QTUtility.IsXP && QTUtility.CheckConfig(Settings.ToggleFullRowSelect))
{
NMLVODSTATECHANGE nmlvodstatechange = (NMLVODSTATECHANGE)Marshal.PtrToStructure(msg.LParam, typeof(NMLVODSTATECHANGE));
if (((nmlvodstatechange.uNewState & 2) == 2) && (ShellBrowser.ViewMode == FVM.DETAILS))
{
PInvoke.SendMessage(nmlvodstatechange.hdr.hwndFrom, LVM.REDRAWITEMS, (IntPtr)nmlvodstatechange.iFrom, (IntPtr)nmlvodstatechange.iTo);
}
}
break;
case LVN.HOTTRACK:
// Handled through WM_MOUSEMOVE.
if (QTUtility.CheckConfig(Settings.ShowTooltipPreviews) || !QTUtility.CheckConfig(Settings.NoShowSubDirTips))
{
NMLISTVIEW nmlistview = (NMLISTVIEW)Marshal.PtrToStructure(msg.LParam, typeof(NMLISTVIEW));
int iItem = CorrectHotItem(nmlistview.iItem);
if (iHotItem != iItem)
{
OnHotItemChanged(iItem);
iHotItem = iItem;
}
}
break;
case LVN.KEYDOWN: {
// Handled through WM_KEYDOWN.
NMLVKEYDOWN nmlvkeydown = (NMLVKEYDOWN)Marshal.PtrToStructure(msg.LParam, typeof(NMLVKEYDOWN));
if (OnKeyDown((Keys)nmlvkeydown.wVKey))
{
msg.Result = (IntPtr)1;
return(true);
}
else
{
return(false);
}
}
case LVN.GETINFOTIP: {
// Handled through WM_NOTIFY / TTN_NEEDTEXT
NMLVGETINFOTIP nmlvgetinfotip = (NMLVGETINFOTIP)Marshal.PtrToStructure(msg.LParam, typeof(NMLVGETINFOTIP));
return(OnGetInfoTip(nmlvgetinfotip.iItem, GetHotItem() != nmlvgetinfotip.iItem)); // TODO there's got to be a better way.
}
case LVN.BEGINLABELEDIT:
// This is just for file renaming, which there's no need to
// mess with in Windows 7.
ShellViewController.DefWndProc(ref msg);
if (QTUtility.IsXP && !QTUtility.CheckConfig(Settings.ExtWhileRenaming))
{
NMLVDISPINFO nmlvdispinfo = (NMLVDISPINFO)Marshal.PtrToStructure(msg.LParam, typeof(NMLVDISPINFO));
if (nmlvdispinfo.item.lParam != IntPtr.Zero)
{
using (IDLWrapper idl = ShellBrowser.ILAppend(nmlvdispinfo.item.lParam)) {
OnFileRename(idl);
}
}
}
break;
case LVN.ENDLABELEDIT: {
// TODO
NMLVDISPINFO nmlvdispinfo2 = (NMLVDISPINFO)Marshal.PtrToStructure(msg.LParam, typeof(NMLVDISPINFO));
OnEndLabelEdit(nmlvdispinfo2.item);
break;
}
}
return(false);
}
/// <summary>
/// LVNs the delete item.
/// </summary>
/// <param name="nmPtr">The nm PTR.</param>
private void LvnDeleteItem(
NMLISTVIEW nmPtr )
{
this.OnItemDeleted( EventArgs.Empty );
}
/// <summary>
/// LVNs the insert item.
/// </summary>
/// <param name="nmPtr">The nm PTR.</param>
private void LvnInsertItem(
NMLISTVIEW nmPtr )
{
this.OnItemInserted( EventArgs.Empty );
}
/// <summary>
/// Provide the events that MS has "forgotten" to implement.
/// </summary>
/// <param name="nmPtr">The nm PTR.</param>
private void LvnItemChanged(
NMLISTVIEW nmPtr )
{
if ( !(
(this.Items.Count == 0) ||
(this.Items[this.Items.Count - 1] != null)
) )
{
this.OnSelectedIndexChanged( EventArgs.Empty );
}
}
