An HSV color selector can be said to be adjusting if multiple rapid
changes are being made to its value, for example, when the user is
adjusting the value with the mouse. This function queries whether
the HSV color selector is being adjusted or not.
%TRUE if clients can ignore changes to the color value,
since they may be transitory, or %FALSE if they should consider
the color value status to be final.
An HSV color selector can be said to be adjusting if multiple rapid changes are being made to its value, for example, when the user is adjusting the value with the mouse. This function queries whether the HSV color selector is being adjusted or not.