public DialogResult ShowDialog()
{
Application.DoEvents();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if (bmpBack != null)
{
UIUtil.DimImage(bmpBack);
}
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Guid.NewGuid().ToString();
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
NativeMethods.SwitchDesktop(pOrgDesktop);
NativeMethods.SetThreadDesktop(pOrgDesktop);
NativeMethods.CloseDesktop(pNewDesktop);
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.Result;
}
catch (Exception) { Debug.Assert(false); }
return(dr);
}
public DialogResult ShowDialog()
{
Application.DoEvents();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if(bmpBack != null) UIUtil.DimImage(bmpBack);
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Guid.NewGuid().ToString();
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
NativeMethods.SwitchDesktop(pOrgDesktop);
NativeMethods.SetThreadDesktop(pOrgDesktop);
NativeMethods.CloseDesktop(pNewDesktop);
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.Result;
}
catch(Exception) { Debug.Assert(false); }
return dr;
}
private void SecureDialogThread(object oParam)
{
try
{
SecureThreadParams stp = oParam as SecureThreadParams;
if (stp == null)
{
Debug.Assert(false); return;
}
NativeMethods.SetThreadDesktop(stp.ThreadDesktop);
BackgroundForm formBack = new BackgroundForm(
stp.BackgroundBitmap);
formBack.Show();
NativeMethods.SwitchDesktop(stp.ThreadDesktop);
stp.Result = m_form.ShowDialog(formBack);
formBack.Hide();
}
catch (Exception) { Debug.Assert(false); }
}
public DialogResult ShowDialog(out object objResult, object objConstructParam)
{
objResult = null;
ProcessMessagesEx();
ClipboardEventChainBlocker ccb = new ClipboardEventChainBlocker();
byte[] pbClipHash = ClipboardUtil.ComputeHash();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if(bmpBack != null) UIUtil.DimImage(bmpBack);
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Convert.ToBase64String(
Guid.NewGuid().ToByteArray(), Base64FormattingOptions.None);
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
if(pNewDesktop == IntPtr.Zero)
throw new InvalidOperationException();
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
stp.FormConstructParam = objConstructParam;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
if(!NativeMethods.SwitchDesktop(pOrgDesktop)) { Debug.Assert(false); }
NativeMethods.SetThreadDesktop(pOrgDesktop);
if(!NativeMethods.CloseDesktop(pNewDesktop)) { Debug.Assert(false); }
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.DialogResult;
objResult = stp.ResultObject;
}
catch(Exception) { Debug.Assert(false); }
byte[] pbNewClipHash = ClipboardUtil.ComputeHash();
if((pbClipHash != null) && (pbNewClipHash != null) &&
!MemUtil.ArraysEqual(pbClipHash, pbNewClipHash))
ClipboardUtil.Clear();
ccb.Release();
if(bmpBack != null) bmpBack.Dispose();
// If something failed, show the dialog on the normal desktop
if(dr == DialogResult.None)
{
Form f = m_fnConstruct(objConstructParam);
dr = f.ShowDialog();
objResult = m_fnResultBuilder(f);
UIUtil.DestroyForm(f);
}
return dr;
}
public DialogResult ShowDialog(out object objResult, object objConstructParam)
{
objResult = null;
ProcessMessagesEx();
ClipboardEventChainBlocker ccb = new ClipboardEventChainBlocker();
byte[] pbClipHash = ClipboardUtil.ComputeHash();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if (bmpBack != null)
{
UIUtil.DimImage(bmpBack);
}
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Convert.ToBase64String(
Guid.NewGuid().ToByteArray(), Base64FormattingOptions.None);
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
if (pNewDesktop == IntPtr.Zero)
{
throw new InvalidOperationException();
}
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
stp.FormConstructParam = objConstructParam;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
if (!NativeMethods.SwitchDesktop(pOrgDesktop))
{
Debug.Assert(false);
}
NativeMethods.SetThreadDesktop(pOrgDesktop);
if (!NativeMethods.CloseDesktop(pNewDesktop))
{
Debug.Assert(false);
}
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.DialogResult;
objResult = stp.ResultObject;
}
catch (Exception) { Debug.Assert(false); }
byte[] pbNewClipHash = ClipboardUtil.ComputeHash();
if ((pbClipHash != null) && (pbNewClipHash != null) &&
!MemUtil.ArraysEqual(pbClipHash, pbNewClipHash))
{
ClipboardUtil.Clear();
}
ccb.Release();
if (bmpBack != null)
{
bmpBack.Dispose();
}
// If something failed, show the dialog on the normal desktop
if (dr == DialogResult.None)
{
Form f = m_fnConstruct(objConstructParam);
dr = f.ShowDialog();
objResult = m_fnResultBuilder(f);
UIUtil.DestroyForm(f);
}
return(dr);
}
private void SecureDialogThread(object oParam)
{
BackgroundForm formBack = null;
try
{
SecureThreadParams stp = (oParam as SecureThreadParams);
if (stp == null)
{
Debug.Assert(false); return;
}
if (!NativeMethods.SetThreadDesktop(stp.ThreadDesktop))
{
Debug.Assert(false);
return;
}
ProcessMessagesEx();
// Test whether we're really on the secure desktop
if (NativeMethods.GetThreadDesktop(NativeMethods.GetCurrentThreadId()) !=
stp.ThreadDesktop)
{
Debug.Assert(false);
return;
}
// Creating a window on the new desktop spawns a CtfMon.exe child
// process by default. On Windows Vista, this process is terminated
// correctly when the desktop is closed. However, on Windows 7 it
// isn't terminated (probably a bug); creating multiple desktops
// accumulates CtfMon.exe child processes. In order to prevent this,
// we simply disable IME for the new desktop thread (CtfMon.exe then
// isn't loaded automatically).
try { NativeMethods.ImmDisableIME(0); } // Always false on 2000/XP
catch (Exception) { Debug.Assert(!WinUtil.IsAtLeastWindows2000); }
ProcessMessagesEx();
formBack = new BackgroundForm(stp.BackgroundBitmap);
formBack.Show();
ProcessMessagesEx();
if (!NativeMethods.SwitchDesktop(stp.ThreadDesktop))
{
Debug.Assert(false);
}
ProcessMessagesEx();
Form f = m_fnConstruct(stp.FormConstructParam);
if (f == null)
{
Debug.Assert(false); return;
}
if (Program.Config.UI.SecureDesktopPlaySound)
{
UIUtil.PlayUacSound();
}
stp.DialogResult = f.ShowDialog(formBack);
stp.ResultObject = m_fnResultBuilder(f);
UIUtil.DestroyForm(f);
}
catch (Exception) { Debug.Assert(false); }
finally
{
if (formBack != null)
{
try
{
formBack.Close();
UIUtil.DestroyForm(formBack);
}
catch (Exception) { Debug.Assert(false); }
}
}
}
public DialogResult ShowDialog()
{
ProcessMessagesEx();
ClipboardEventChainBlocker ccb = new ClipboardEventChainBlocker();
byte[] pbClipHash = ClipboardUtil.ComputeHash();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if(bmpBack != null) UIUtil.DimImage(bmpBack);
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Convert.ToBase64String(
Guid.NewGuid().ToByteArray(), Base64FormattingOptions.None);
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
if(pNewDesktop == IntPtr.Zero)
{
Debug.Assert(false);
return DialogResult.Cancel;
}
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
if(!NativeMethods.SwitchDesktop(pOrgDesktop)) { Debug.Assert(false); }
NativeMethods.SetThreadDesktop(pOrgDesktop);
if(!NativeMethods.CloseDesktop(pNewDesktop)) { Debug.Assert(false); }
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.Result;
}
catch(Exception) { Debug.Assert(false); }
byte[] pbNewClipHash = ClipboardUtil.ComputeHash();
if((pbClipHash != null) && (pbNewClipHash != null) &&
!MemUtil.ArraysEqual(pbClipHash, pbNewClipHash))
ClipboardUtil.Clear();
ccb.Release();
if(bmpBack != null) bmpBack.Dispose();
return dr;
}
