private void HandleAddingGuides()
{
if (mCursor.PrimaryClick)
{
float x = mCursor.X;
float y = mCursor.Y;
if (x > mRectangle.X && x < mRectangle.X + mRectangle.Width &&
y > mRectangle.Y && y < mRectangle.Y + mRectangle.Height)
{
AddGuide(x, y);
}
}
}