private void FormMain_Load(object sender, EventArgs e)
{
// start the encryption thread pool to speed up the analyzer - this is also the first access to the native
// "TrueCrypt.dll" and therefore an exception may occur when the library cannot be loaded
try
{
TrueCrypt.EncryptionThreadPoolStart(Environment.ProcessorCount);
}
catch (Exception ex)
{
if (ex is DllNotFoundException || ex is EntryPointNotFoundException)
{
MessageBox.Show(this, PageContext.GetInstance().GetResourceString("LoadTrueCryptDllFailed"), Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Stop);
silentExit = true;
Close();
return;
}
throw;
}
// try to open the TestCrypt driver just to test whether the driver can be opened
try
{
TrueCrypt.OpenDriver();
}
catch (TrueCrypt.TrueCryptException ex)
{
// the TestCrypt driver could not be opened - most probably this is caused by a 64-bit operating system
// which requires digitally signed drivers
string msg;
switch (ex.Cause)
{
case TrueCrypt.TrueCryptException.ExceptionCause.DriverLoadFailed:
// check whether loading the driver failed due to the missing digital driver signature
if (((uint)ex.ErrorCode == 0x80004005) &&
Wow.Is64BitOperatingSystem && Wow.IsOSAtLeast(Wow.OSVersion.WIN_VISTA))
{
// missing digital driver signature
notifyIcon.BalloonTipClicked += notifyIcon_BalloonTipClicked;
notifyIcon.BalloonTipTitle = PageContext.GetInstance().GetResourceString("LoadTestCryptDriverFailedTitle");
notifyIcon.BalloonTipText = PageContext.GetInstance().GetResourceString("DriverSignatureEnforcement");
notifyIcon.ShowBalloonTip(30000);
}
else
{
// another error has occurred
msg = string.Format(PageContext.GetInstance().GetResourceString("LoadTestCryptDriverFailed"), ex.ErrorCode, ex.Message);
MessageBox.Show(this, msg, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
break;
case TrueCrypt.TrueCryptException.ExceptionCause.DriverOpenFailed:
default:
msg = string.Format(PageContext.GetInstance().GetResourceString("OpenTestCryptDriverFailed"), ex.ErrorCode, ex.Message);
MessageBox.Show(this, msg, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
break;
}
}
}
