TitleSafeRegion isn't available on XNA 4?

Question

I'm following the book Microsoft XNA Game Studio Creators Guide v2. and there is a snippet in the book that is used to return a Rectangle that represents the safe area you can draw without the fear of 'drawing' outside the screen.

Except in my IDE Visual Studio 2010, that method doesn't show up in intellisense and in fact doesn't show up anywhere.

Here is the snippet:

private void UpdateAsteroid(GameTime gameTime)
{
    // time between frames
    float timeLapse = (float)gameTime.ElapsedGameTime.Milliseconds;
    if (move == true)
    { // asteroid centered at the middle of the image
        Rectangle safeArea = TitleSafeRegion(rockWidth/2, rockHeight/2);

      // asteroid right edge exceeds right window edge
    if (rockPosition.X > safeArea.Right){
        rockPosition.X = safeArea.Right; // move it back
        rockSpeed *= -1.0f; // reverse direction
    }
// asteroid left edge precedes the left window edge
else if (rockPosition.X - rockCenter.X < 0){
rockPosition.X = rockCenter.X; // move it back
rockSpeed *= -1.0f; // reverse direction
}
// asteroid within window bounds so update rockPosition
else
rockPosition.X += rockSpeed * timeLapse;
// Scale radians by time between frames so rotation is uniform
// rate on all systems. Cap between 0 & 2PI for full rotation.
const float SCALE = 50.0f;
rockRotation += rockRotationSpeed * timeLapse/SCALE;
rockRotation = rockRotation % (MathHelper.Pi * 2.0f);
}
}

Answer 1

Hey guys, I am also reading the same book, and that method is defined as a procedure in the game class ( File Game1.cs) as

Rectangle TitleSafeRegion( int spriteWidth, int spriteHeight )
{
    #if XBOX
    // some televisions only show 80% of the window
    [... code here ...]
    // ensure image drawn in safe region on all sides
    return new Rectangle( [... code here ...] );
    #endif

    // show entire region on the PC or Zune
    return new Rectangle( 0, 0, [... Code here ...] );
}

It isn't part of Viewport, the author implemented his own method to show compatibility with XBOX, PC, and Zune. It is found on Chapter 4, page 44. Hope this answered your question. Sorry, for the late post.

Answer 2

Are you sure that method isn't defined earlier in the book? From your calling code example it's an instance/static method of the class that UpdateAsteroid is a member of - it doesn't appear in MSDN as a member of the Game class (for 4.0 or 3.1).

Alternatively, Viewport.TitleSafeArea property might help.