public void LoadIcon(int index)
{
if (User32.SendMessage(this.LVHandle, MSG.LVM_ISITEMVISIBLE, index, 0) == 0)
{
return;
}
ShellItem sho = null;
int hash = -1;
Bitmap bitmap = null;
this.Invoke(new MethodInvoker(() =>
{
sho = Items[index];
hash = sho.GetHashCode();
Thread.Sleep(1);
Application.DoEvents();
bitmap = sho.GetShellThumbnail(IconSize);
if ((sho.GetIconType() & IExtractIconpwFlags.GIL_PERCLASS) == 0)
{
if (!cache.ContainsKey(hash))
{
cache.Add(hash, new Bitmap(bitmap));
}
}
else
{
if (!cache.ContainsKey(hash))
{
cache.Add(hash, null);
}
}
bitmap.Dispose();
}));
User32.SendMessage(this.LVHandle, MSG.LVM_REDRAWITEMS, index, index);
//Thread.Sleep(1);
//Application.DoEvents();
//if (token.IsCancellationRequested == true)
//{
// return;
//}
}
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
if (m.Msg == 78)
{
NMHDR nmhdr = new NMHDR();
nmhdr = (NMHDR)m.GetLParam(nmhdr.GetType());
switch ((int)nmhdr.code)
{
case WNM.LVN_GETDISPINFOW:
var nmlv = new NMLVDISPINFO();
nmlv = (NMLVDISPINFO)m.GetLParam(nmlv.GetType());
//if ((nmlv.item.mask & LVIF.LVIF_COLUMNS) == LVIF.LVIF_COLUMNS)
//{
// int[] varArray = {0,1,2,3};
// IntPtr ptr = Marshal.AllocHGlobal(varArray.Length*Marshal.SizeOf(varArray[0]));
// Marshal.Copy(varArray,0,ptr, varArray.Length);
// nmlv.item.cColumns = varArray.Length;
// nmlv.item.puColumns = (uint)ptr;
// Marshal.StructureToPtr(nmlv, m.LParam, false);
//}
if ((nmlv.item.mask & LVIF.LVIF_TEXT) == LVIF.LVIF_TEXT && nmlv.item.iSubItem == 0)
{
var currentItem = Items[nmlv.item.iItem];
nmlv.item.pszText = this.View == ShellViewStyle.Tile ? String.Empty : currentItem.DisplayName;
Marshal.StructureToPtr(nmlv, m.LParam, false);
}
if ((nmlv.item.mask & LVIF.LVIF_TEXT) == LVIF.LVIF_TEXT && nmlv.item.iSubItem == 1)
{
var currentItem = Items[nmlv.item.iItem];
nmlv.item.pszText = "AAAAA";
Marshal.StructureToPtr(nmlv, m.LParam, false);
}
break;
case WNM.LVN_ITEMACTIVATE:
var iac = new NMITEMACTIVATE();
iac = (NMITEMACTIVATE)m.GetLParam(iac.GetType());
Navigate(Items[iac.iItem]);
break;
case WNM.LVN_ENDSCROLL:
tokenSource.Cancel(); // .Cancel();
this.Cancel = true;
this.cache.Clear();
//this.refreshedImages.Clear();
GC.Collect();
Shell32.SetProcessWorkingSetSize(Process.GetCurrentProcess().Handle, -1, -1);
break;
case CustomDraw.NM_CUSTOMDRAW:
{
if (nmhdr.hwndFrom == this.LVHandle)
{
var nmlvcd = new NMLVCUSTOMDRAW();
nmlvcd = (NMLVCUSTOMDRAW)m.GetLParam(nmlvcd.GetType());
var index = (int)nmlvcd.nmcd.dwItemSpec;
var hdc = nmlvcd.nmcd.hdc;
switch (nmlvcd.nmcd.dwDrawStage)
{
case CustomDraw.CDDS_PREPAINT:
m.Result = (IntPtr)CustomDraw.CDRF_NOTIFYITEMDRAW;
break;
case CustomDraw.CDDS_ITEMPREPAINT:
m.Result = (IntPtr)CustomDraw.CDRF_NOTIFYPOSTPAINT;
break;
case CustomDraw.CDDS_ITEMPOSTPAINT:
if (nmlvcd.clrFace != 0 && nmlvcd.clrTextBk != 0)
{
var itemBounds = new User32.RECT();
User32.SendMessage(this.LVHandle, MSG.LVM_GETITEMRECT, index, ref itemBounds);
var iconBounds = new User32.RECT();
iconBounds.Left = 1;
User32.SendMessage(this.LVHandle, MSG.LVM_GETITEMRECT, index, ref iconBounds);
ShellItem sho = null;
var hash = -1;
sho = Items[index];
try
{
hash = sho.GetHashCode();
if (sho != null)
{
icon = sho.GetShellThumbnail(IconSize, ShellThumbnailFormatOption.ThumbnailOnly, ShellThumbnailRetrievalOption.CacheOnly);
if (icon == null)
{
Bitmap tempicon = null;
if (!cache.TryGetValue(hash, out tempicon))
{
//if (!this.refreshedImages.Contains(index))
//{
// this.refreshedImages.Add(index);
//}
Task.Run(() =>
{
LoadIcon(index);
});
}
else
{
if (tempicon != null)
{
icon = tempicon;
}
}
if ((sho.GetIconType() & IExtractIconpwFlags.GIL_PERCLASS) == IExtractIconpwFlags.GIL_PERCLASS || sho.IsFolder)
{
icon = sho.GetShellThumbnail(IconSize, ShellThumbnailFormatOption.IconOnly);
}
else
{
int iconindex = 0;
if (Path.GetExtension(sho.ParsingName) == ".exe" || Path.GetExtension(sho.ParsingName) == ".com" || Path.GetExtension(sho.ParsingName) == ".bat")
{
iconindex = 2;
}
else if (sho.IsFolder)
{
iconindex = 3;
}
var real_icon = IconSize > 48 ? jumbo.GetIcon(iconindex) : extra.GetIcon(iconindex);
if (real_icon != null)
{
icon = real_icon.ToBitmap();
//real_icon.Dispose();
User32.DestroyIcon(real_icon.Handle);
}
Bitmap tempicon2 = null;
if (!cache.TryGetValue(hash, out tempicon2))
{
//if (!this.refreshedImages.Contains(index))
//{
// this.refreshedImages.Add(index);
//}
Task.Run(() =>
{
LoadIcon(index);
});
}
else
{
if (tempicon2 != null)
{
icon = tempicon2;
}
}
}
// //else
// // icon = ((ShellItem)KnownFolders.Windows).GetShellThumbnail(IconSize, ShellThumbnailFormatOption.IconOnly);
// //}
}
////var txtBounds = new User32.RECT();
////txtBounds.Left = 2;
////WindowsAPI.SendMessage(this.handle, WindowsAPI.LVM.GETITEMRECT, index, ref txtBounds);
if (icon != null)
{
using (Graphics g = Graphics.FromHdc(hdc))
{
if (icon.Width != icon.Height)
{
g.DrawImageUnscaled(icon, new Rectangle(iconBounds.Left + (iconBounds.Right - iconBounds.Left - IconSize) / 2, iconBounds.Top + (iconBounds.Bottom - iconBounds.Top - IconSize) / 2, IconSize, IconSize));
}
else
{
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawImage(icon, new Rectangle(iconBounds.Left + (iconBounds.Right - iconBounds.Left - IconSize) / 2, iconBounds.Top + (iconBounds.Bottom - iconBounds.Top - IconSize) / 2, IconSize, IconSize));
}
}
icon.Dispose();
if (cache.ContainsKey(hash))
{
cache[hash].Dispose();
}
cache.Remove(hash);
}
}
}
catch (Exception ex)
{
//throw;
}
}
m.Result = (IntPtr)CustomDraw.CDRF_SKIPDEFAULT;
break;
}
}
}
break;
}
}
}