private int GetIconOverlayIndex()
{
if (_iconOverlayIndex != UndefinedIconIndex)
{
return(_iconOverlayIndex);
}
if (IsDesktop)
{
return(_iconOverlayIndex = NoIconIndex);
}
Dispatcher.InvokeAsync(
() => {
int iconOverlayIndex;
using (NativeShellIconOverlay shellIconOverlay = ParentShellFolder.QueryInterface <IShellIconOverlay>().ToNative())
iconOverlayIndex = shellIconOverlay != null ? _tree.IconList.GetIconOverlayIndex(shellIconOverlay, _pidl) : NoIconIndex;
Set(ref _iconOverlayIndex, iconOverlayIndex, "IconOverlaySmall", "IconOverlayLarge", "IconOverlayExtraLarge", "IconOverlayJumbo");
},
DispatcherPriority.Background);
return(NoIconIndex);
}
private int GetIconIndex(GILI iconAttrs)
{
if (_iconIndex != UndefinedIconIndex)
{
return(_iconIndex);
}
if (IsDesktop)
{
using (PIDLIST desktopPidl = Native.SHGetKnownFolderIDList(FOLDERID.Desktop))
return(_iconIndex = Native.SHGetFileInfo(desktopPidl, SHGFI.SYSICONINDEX).iIcon);
}
Dispatcher.InvokeAsync(
() => {
int iconIndex;
using (NativeShellIcon shellIcon = ParentShellFolder.QueryInterface <IShellIcon>().ToNative())
iconIndex = shellIcon != null ? _tree.IconList.GetIconIndex(shellIcon, _pidl, iconAttrs) : UnindexableIconIndex;
Set(ref _iconIndex, iconIndex, "IconSmall", "IconLarge", "IconExtraLarge", "IconJumbo");
},
DispatcherPriority.Background);
return(NoIconIndex);
}
private void UpdateAttrs(SFGAO newAttrs)
{
newAttrs &= ~_attrsSet;
_attrs |= ParentShellFolder.GetAttributesOf(_pidl, newAttrs);
_attrsSet |= newAttrs;
}
