// ----------------------------------------------------------------------------
// A spin ctrl is a text control with a spin button which is usually used to
// prompt the user for a numeric input.
// There are two kinds for number types T=integer or T=double.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// A spin ctrl is a text control with a spin button which is usually used to
// prompt the user for a numeric input.
// There are two kinds for number types T=integer or T=double.
// ----------------------------------------------------------------------------