/// <summary>
/// Get a list of accessible desktop objects.
/// </summary>
/// <param name="desired_access">The desired access for the desktops.</param>
/// <returns>The list of desktops.</returns>
public IEnumerable <NtDesktop> GetAccessibleDesktops(DesktopAccessRights desired_access)
{
foreach (string desktop in Desktops)
{
using (ObjectAttributes obj_attr = new ObjectAttributes(desktop, AttributeFlags.CaseInsensitive, this))
{
var result = NtDesktop.Open(obj_attr, 0, desired_access, false);
if (result.IsSuccess)
{
yield return(result.Result);
}
}
}
}
/// <summary>
/// Get a list of accessible desktop objects.
/// </summary>
/// <param name="desired_access">The desired access for the desktops.</param>
/// <returns>The list of desktops.</returns>
public IEnumerable <NtDesktop> GetAccessibleDesktops(DesktopAccessRights desired_access)
{
using (var list = new DisposableList <NtDesktop>()) {
foreach (string desktop in Desktops)
{
using (ObjectAttributes obj_attr = new ObjectAttributes(desktop, AttributeFlags.CaseInsensitive, this)) {
var result = NtDesktop.Open(obj_attr, 0, desired_access, false);
if (result.IsSuccess)
{
list.Add(result.Result);
}
}
}
return(list.ToArrayAndClear());
}
}
/// <summary>
/// Enumerate window handles.
/// </summary>
/// <param name="desktop">Desktop containing the Windows. Optional.</param>
/// <param name="parent">The parent Window. Optional.</param>
/// <param name="enum_children">True to enumerate child Windows.</param>
/// <param name="hide_immersive">Hide immersive Windows.</param>
/// <param name="thread_id">The thread ID that owns the Window.</param>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The enumerated Window Handles.</returns>
public static NtResult <IEnumerable <NtWindow> > GetWindows(NtDesktop desktop, NtWindow parent,
bool enum_children, bool hide_immersive, int thread_id, bool throw_on_error)
{
int count = 64;
while (true)
{
IntPtr[] handles = new IntPtr[count];
NtStatus status = NtSystemCalls.NtUserBuildHwndList(desktop.GetHandle(), parent.Handle, enum_children,
hide_immersive, thread_id, handles.Length, handles, out int required_count);
if (status.IsSuccess())
{
return(handles.Take(required_count).Select(i => new NtWindow(i)).CreateResult());
}
if (status != NtStatus.STATUS_BUFFER_TOO_SMALL || count > required_count)
{
return(status.CreateResultFromError <IEnumerable <NtWindow> >(throw_on_error));
}
count = required_count;
}
}
protected override sealed NtResult <NtDesktop> OpenInternal(ObjectAttributes obj_attributes,
DesktopAccessRights desired_access, bool throw_on_error)
{
return(NtDesktop.Open(obj_attributes, CreateDesktopFlags.None, desired_access, throw_on_error));
}
/// <summary>
/// Enumerate window handles.
/// </summary>
/// <param name="desktop">Desktop containing the Windows. Optional.</param>
/// <param name="parent">The parent Window. Optional.</param>
/// <param name="enum_children">True to enumerate child Windows.</param>
/// <param name="hide_immersive">Hide immersive Windows.</param>
/// <param name="thread_id">The thread ID that owns the Window.</param>
/// <returns>The enumerated Window Handles.</returns>
public static IEnumerable <NtWindow> GetWindows(NtDesktop desktop, NtWindow parent,
bool enum_children, bool hide_immersive, int thread_id)
{
return(GetWindows(desktop, parent, enum_children, hide_immersive, thread_id, true).Result);
}
