/// <summary>
/// Gets a value indicating whether Ink is available.
/// </summary>
/// <returns>true if Ink is available, or false if it is not</returns>
/// <remarks>
/// If ink is not available, then the other static methods or properties of this class will not
/// be usable and will throw NotSupportedException.
/// </remarks>
public static bool IsAvailable()
{
if (!isInkAvailableInit)
{
// For debug builds we try to load the assembly. This enables us to work with ink
// if we have the Tablet PC SDK installed.
// For retail builds we only enable ink on true blue Tablet PC's. Calling GetSystemMetrics
// is much faster than attempting to load an assembly.
#if NOINK
isInkAvailable = false;
#elif DEBUG
#if ENABLE_INK_IN_DEBUG_BUILDS
try
{
Assembly inkAssembly = Assembly.Load("Microsoft.Ink, Version=1.7.2600.2180, Culture=\"\", PublicKeyToken=31bf3856ad364e35");
isInkAvailable = true;
}
catch (Exception)
{
isInkAvailable = false;
}
#else
isInkAvailable = false;
#endif
#else
if (SafeNativeMethods.GetSystemMetrics(NativeConstants.SM_TABLETPC) != 0)
{
// Only enable ink if the system states it is a Tablet PC.
// In other words, don't incur the performance penalty and a few other
// weird things for regular PC's that just happen to have the SDK
// installed, or that have something like Vista Ultimate.
try
{
Assembly inkAssembly = Assembly.Load("Microsoft.Ink, Version=1.7.2600.2180, Culture=\"\", PublicKeyToken=31bf3856ad364e35");
isInkAvailable = true;
}
catch (Exception)
{
isInkAvailable = false;
}
}
else
{
isInkAvailable = false;
}
#endif
isInkAvailableInit = true;
}
return(isInkAvailable);
}
/// <summary>
/// Determines whether the user is running within a remoted session (Terminal Server, Remote Desktop).
/// </summary>
/// <returns>
/// <b>true</b> if we're running in a remote session, <b>false</b> otherwise.
/// </returns>
/// <remarks>
/// You can use this to optimize the presentation of visual elements. Remote sessions
/// are often bandwidth limited and less suitable for complex drawing.
/// Note to implementors: This may be implemented as a no op; in this case, always return false.
/// </remarks>
public static bool IsRemote()
{
return(0 != SafeNativeMethods.GetSystemMetrics(NativeConstants.SM_REMOTESESSION));
}
