Allows assigning of result, msg and alias values with label struct.
NOTE: Old button label struct are compatible but limited only and
not recommended for usage!
Old parameters 'struct button_label' doesn't provide newer parameters.
Missing parameters are filled with default values and must be assigned
afterward, if required.
This is a nearly methode similar with the older button handler find
in gui/widget/buttons.h, some parameters are different,
but require minimalized input.
This member sets some basic parameters and will paint
concurrently on execute, explicit call of paint() is not required.
This should simplify the implementation of the footer class.
Function was without effect after adding of button objects,
showButtonContour() now changes property explicit for all items, also
after their addition to chain.
This function uses struct label like old button label function
see /gui/widget/buttons.cpp, but can also use strings in structs
also possible: add single button with text or locale
Use strictly CComponentsForm as parent parameter in constructors.
Some parts have been cleaned up (Constructors, init methodes removed)
New parameter makes it possible already add current item in constructor.
So in mostly situations is it not necessary to use explicit addCCItem(),
but addCCItem()is still valid and necessary in certain situations.
Affected are all cc-classes and their derivates.
Some classes must or can be adapted later. The function is
not currently restricted, because usage of parent parameter is not explicit
defined in constructors, see CImageInfo, here yet are used addCCItem()
methodes.
Generally this parameter is located in the constructors before bool has_shadow,
but it is not sure whether it would be better to use this parameter as the first.
That remains to be clarified.
