private void CloseNewDesktop()
{
if (originalDesktop != null)
{
originalDesktop.Activate();
processFactory.StartupDesktop = originalDesktop;
logger.Info($"Switched back to original desktop {originalDesktop}.");
}
else
{
logger.Warn($"No original desktop found to activate!");
}
if (newDesktop != null)
{
newDesktop.Close();
logger.Info($"Closed new desktop {newDesktop}.");
}
else
{
logger.Warn($"No new desktop found to close!");
}
explorerShell.Resume();
}
private void CreateNewDesktop()
{
originalDesktop = desktopFactory.GetCurrent();
logger.Info($"Current desktop is {originalDesktop}.");
newDesktop = desktopFactory.CreateNew(nameof(SafeExamBrowser));
logger.Info($"Created new desktop {newDesktop}.");
newDesktop.Activate();
processFactory.StartupDesktop = newDesktop;
logger.Info("Successfully activated new desktop.");
}
private void Timer_Elapsed(object sender, ElapsedEventArgs e)
{
var handle = User32.OpenInputDesktop(0, false, (uint)AccessMask.DESKTOP_NONE);
var name = string.Empty;
var nameLength = 0;
if (handle != IntPtr.Zero)
{
User32.GetUserObjectInformation(handle, Constant.UOI_NAME, IntPtr.Zero, 0, ref nameLength);
var namePointer = Marshal.AllocHGlobal(nameLength);
var success = User32.GetUserObjectInformation(handle, Constant.UOI_NAME, namePointer, nameLength, ref nameLength);
if (success)
{
name = Marshal.PtrToStringAnsi(namePointer);
Marshal.FreeHGlobal(namePointer);
if (name?.Equals(desktop.Name, StringComparison.OrdinalIgnoreCase) != true)
{
logger.Warn($"Detected desktop switch to '{name}' [{handle}], trying to reactivate {desktop}...");
desktop.Activate();
}
}
else
{
logger.Warn("Failed to get name of currently active desktop!");
}
User32.CloseDesktop(handle);
}
else
{
logger.Warn("Failed to get currently active desktop!");
}
timer.Start();
}