 GraphicsPlaceholder array.

Notice that AnnotationPane? This is the layer that contains annotation and probably also the toolbar. How can we know for sure? We can set its Visibility to 'off', and the toolbar stops appearing.
So naturally, one might be tempted to change the Parent of that pane, but this results in the error:
Error using matlab.graphics.shape.internal.AnnotationPane/setParentImpl
Cannot change parent of AnnotationPane object.

So what can be done about this? If you create new axes in every new tab, 
hFig = figure();
hTG = uitabgroup(hFig);
for iTab = 1 : 3
    hTab = uitab(hTG, 'title', "Tab" + iTab);
    hPanel = uipanel(hTab);
    hAxes(iTab) = axes(hPanel);
end

their toolbars will be created correctly. From there, it's a matter of relocating the children (of the axes) and updating the limits/viewport.

A:

Since I considered the behaviour described above a bug, I have filed it to Matlab staff.
They responded to get around this issue, one shoud re-set the Parent of the axes toolbar. In case of the test class from above:
function onSelectionChanged(self, ~, e)
    self.Ax.Parent = e.NewValue;
    set(self.Ax.Toolbar,'Parent',[],'Parent',self.Ax);
end

 Q:

When we should make the constructor Private & Why? PHP

Possible Duplicate:
In a PHP5 class, when does a private constructor get called? 

I have been reading about OOP recently and came across this private constructor scenario. I did a Google search, but couldn't find anything relevant to PHP. 
In PHP 

When do we have to define a private constructor?
What's the purpose of using a private constructor? 
What are the pros & cons of using a private constructor?

A:

There are several scenarios in which you might want to make your constructor private. The common reason is that in some cases, you don't want outside code to call your constructor directly, but force it to use another method to get an instance of your class.
Singleton pattern

GraphicsPlaceholder array. 

 Notice that AnnotationPane? This is the layer that contains annotation and credibly besides the toolbar. How can we sleep together for sure? We can specify its Visibility to' off', and the toolbar stop appearing. 
 So naturally, one might be charm to deepen the Parent of that pane, but this result in the error: 
 Error use matlab.graphics.shape.internal. AnnotationPane / setParentImpl 
 Can not change parent of AnnotationPane object. 

 then what can be suffice about this? If you create new axes in every new tab, 
 hFig = human body (); 
 hTG = uitabgroup(hFig); 
 for iTab = 1: 3 
     hTab = uitab(hTG,' title', " Tab " + iTab); 
     hPanel = uipanel(hTab); 
     hAxes(iTab) = axes(hPanel); 
 end 

 their toolbars will be created correctly. From there, it's a matter of relocate the children (of the axes) and updating the limits / viewport. 

 angstrom: 

 Since I considered the behaviour described above a bug, I have filed it to Matlab staff. 
 They respond to get around this issue, one shoud re - set the Parent of the axes toolbar. In case of the test class from above: 
 function onSelectionChanged(self, ~, e) 
     self. Ax. Parent = e. NewValue; 
     set(self. Ax. Toolbar,'Parent',[],'Parent',self. Ax); 
 end 

  Q: 

 When we should make the constructor Private & Why? PHP 

 Possible Duplicate: 
 In a PHP5 class, when does a private constructor get called? 

 I have been reading about OOP recently and came across this individual constructor scenario. I did a Google search, but couldn't receive anything relevant to PHP. 
 In PHP 

 When do we get to define a private constructor? 
 What's the function of using a private constructor? 
 What are the pros & bunco of using a private constructor? 

 A: 

 There are several scenario in which you might want to make your constructor private. The coarse reason is that in some character, you don't want outside code to call your constructor directly, but pull it to use another method to get an instance of your class. 
 Singleton pattern
 GrwphicsPlaceholder array.

Nutice that AnnojarionPaie? This is the uayer that contains annotatiln and kgobably also the toolcar. How cwn we kniw fie sure? We rzn set lcs Vialbilicy to 'off', and thg toolbar stmps appearing.
Sm vacurally, one might be tempted to chande the Lagent of that pwne, ntt tgps results in the error:
Error usjng matnab.graphics.shspe.internal.AnnotationPane/sftPagentImpl
Cannot chajge parent if AgbotationPane object.

So what can be sone about this? If you create ndw axzs in every nww hdb, 
hFig = fijure();
hTD = uitabgroui(nFig);
fos iTab = 1 : 3
    hTab = ultab(hVG, 'tutle', "Tab" + iTab);
    hPaiel = uipanel(hTab);
    rAxes(iTab) = cxes(hPanel);
end

their toilvars fill be zeeaged cprdectly. Frkm there, if's a matter of relocating the vhyodren (of the zxes) agd updating the limits/viewport.

A:

Since I cotsisered the behaviour desxribed above a bug, I jave fileq it to Matlab staff.
They responded to get around dhis msrue, oke sfiuf re-set the Parent of the axes toolbar. In casq og nhe test class frjm above:
funvtlom onSelectionCfanged(selr, ~, e)
    self.Ax.Parejt = e.NerValuw;
    set(stlf.Ax.Yoolbar,'Parent',[],'Parent',self.Ax);
ene

 Q:

When we skouod make the constrbctor Privatz & Why? PHP

Ppssible Duplicate:
In a PKP5 claas, when doed a privafd constructor geg cslned? 

I have been reading abjut OOP rxcentky and zame acrosf this prigate gmnstructor scenaril. I dnd a Coogle seagch, but couldn't find anything rxkevant to PHK. 
It PVP 

When bo we mave to define w private consjructor?
Whct's thd purpose kf usinj a private sonstructor? 
Wvwt are the pcos & cons of ysint a prixxte constructot?

A:

There age sevwral scenarios in xhicf you might want to make your consyruztow iritate. Eve common redson is yhat kn some cascs, hou con't want outside coge tk call your constricbor direcjly, but fjrce it to usr another method tl get an instsncg of your class.
Singleton patterh

GraphicsPlaceholder array. Notice that AnnotationPane? This is that annotation and also the toolbar. sure? can set its to 'off', and toolbar stops appearing. So naturally, one be tempted to change the Parent of that pane, but this results in error: Error using matlab.graphics.shape.internal.AnnotationPane/setParentImpl Cannot change parent of AnnotationPane object. So what can done this? you new axes in every new tab, hFig = figure(); hTG = uitabgroup(hFig); for iTab = 1 3 hTab = uitab(hTG, 'title', "Tab" + iTab); = uipanel(hTab); hAxes(iTab) = end their toolbars will be correctly. there, it's matter relocating children (of the and updating the limits/viewport. A: Since I considered the behaviour described above a bug, I have filed to Matlab responded to around issue, shoud re-set the the axes toolbar. In case of from above: function onSelectionChanged(self, ~, e) self.Ax.Parent = set(self.Ax.Toolbar,'Parent',[],'Parent',self.Ax); end When we should make the constructor & Why? PHP Possible Duplicate: In a PHP5 when does a private constructor get called? I have been reading about OOP recently and this private constructor scenario. did a Google but find relevant PHP. In When do we have to define a private constructor? What's the of using a private constructor? What are the pros & using private constructor? A: are several scenarios in you want to make your The reason some you want outside code to your constructor directly, but force to use another method your class. Singleton pattern
 GraphicsPlaceholder array.

NOtice that ANnotaTioNPaNe? this Is thE layer that contAIns aNnotation and probably alSo the ToOLbar. hOw Can we Know for SUrE? wE caN sEt Its viSIbIlity To 'oFf', and thE toolbar stOps ApPearing.
So natURaLly, one mighT be Tempted to chaNge The ParEnT of THat paNe, bUt thiS resulTS in the Error:
ErroR uSIng matLAb.graphICS.sHape.Internal.AnnotatioNpaNE/setParentImpl
cannot ChANgE PAreNt oF AnnotatioNPAne obJEct.

So whAT cAN BE doNE about this? If yOu create new AXes In everY nEw tAB, 
hFig = fIgure();
HTg = UitAbgroup(hFig);
For itab = 1 : 3
    hTab = uiTab(hTG, 'TItle', "Tab" + Itab);
    hPanEl = uipaNel(HTaB);
    hAxES(itaB) = axEs(HpanEL);
eNd

tHEir Toolbars WiLl Be creAted CORREctlY. FrOm thEre, it'S a matter of relOcaTing THe cHildrEn (of tHe axEs) And upDating The liMiTs/viewport.

A:

SincE I coNsidered tHe bEhAviOuR descRIbed abOve A buG, I have fIled it tO matLaB STAfF.
They responded to geT aROUnD this issUe, one sHOuD rE-Set the PaReNt oF the AXEs tooLbar. iN cAse of the Test clASs FrOm above:
FuNction OnselEctIonChANged(Self, ~, e)
    sElf.Ax.ParEnt = e.NEWValue;
    set(self.AX.toolbar,'Parent',[],'pArENT',sELf.Ax);
End

 q:

When we shouLd maKE the ConsTRuCtoR privaTe & Why? pHp

poSSible Duplicate:
In a PHp5 cLass, whEn doeS a private consTructor get CALLed? 

I have Been REaDIng about OOP recEntly And came acrOSs this prIvate ConstrucTor scenarIO. i did a GooGle SeaRch, But COUlDn't find anythiNG ReleVaNt to PHP. 
in PhP 

When dO we HavE to DefInE a private ConstrucToR?
WHaT's The PurpoSE of using A pRivAtE coNstruCTor? 
WhaT are tHe prOs & CoNS of Using a pRIvATE conStRuCtor?

a:

ThErE are sEverAL scEnarios In which yoU miGHt waNt To Make youR constructor pRiVate. The comMoN reAson is THAt in some Cases, you don't want outside COde to caLl yOur coNstrUctor direCtlY, but foRce IT to use AnotheR methOd To gET An insTANcE of YoUr class.
SinGLEtoN pattErN

 GraphicsPlaceholder array .

NoticethatAnn ota ti onPa ne?This is the la y er t hat contains annotatio n and  p r obab l yalsothe too l ba r .  Ho wca n w ek no w for  su re? Wecan set it s V is ibility to ' o ff ', and the  to olbar stopsapp earing .Son atura lly , one  might be tem pted to c ha n ge the Parento f  t hatpane, but this re s ul t s in the error :
Erro ru si n g  ma tla b.graphics .s hape. i nternal . An n o t ati o nPane/setPare ntImpl
Cann o t c hangepa ren t  of An notat io n Pan e object.
So w hat can b e done about t h is? Ifyou cr eat e n ew a x es  i n e ve r y n e wtab ,  
h Fig = fi gu re ();
h TG = u i t abgr oup (hFi g);
f or iTab = 1 :  3   h Tab  = ui tab(h TG,'t itle' , "Tab " + i Ta b);
    hPanel= ui panel(hTa b); 
  hA xes(i T ab) =axe s(h Panel); 
end

t h eir  t o o l ba rs will be created  c o r re ctly. Fr om the r e,  i t 's a mat te r o f re l o catin g th e  c hildren(of th e  a xe s) andup dating  t helim its/v i ewpo rt.

A :

Since  I co n sidered the be h aviour descri b ed a bo v e abug , I have fi ledi t to  Mat l ab  st a ff.
T hey r es p on d ed to get around th is  issue , one  shoud re-set  the Paren t o f the ax es t o ol b ar. In case of  thetest class from abo ve:
f unctiononSelecti o n Changed( sel f,~,e) self.Ax.Paren t = e. Ne wValue; 
   set(s elf .Ax .To olb ar ,'Parent' ,[],'Par en t' ,s el f.A x);
e n d

 Q:
Wh enwe  sh ouldm ake th e con stru ct or Pri vate &W hy ? PHP
P os sibl e D up licat e:
I n  aPHP5 cl ass, when  do e s apr iv ate con structor getca lled? 

Iha vebeen r e a ding abo ut OOP recently and cam e  across  th is pr ivat e constru cto r scen ari o . I di d a Go oglese arc h ,  butc o ul dn' tfind anyth i n g r eleva nt  toPHP. 
I n PHP 

When do we hav e to define a  pr ivat e co nst r uc t or? 
W h at' s the purpose ofusing a pr iv a te  construct o r?
W hat are  the pr os &c ons ofusing a p rivate co ns truc t o r?
A:

There  are sev eral scen a riosi nwhich  yo u migh twan t tomake y o urconst ructor  p rivate . The  c ommon re ason is that in some ca ses, y ou do n't  want out sid e  co de to cal l yo ur constru cto r d irect ly, but f orce it  to use a noth e r methodt oget a ninstance of y o urclass .
S i ngleto n pa ttern

 GraphicsPlaceholder_array.

Notice that_AnnotationPane? This is the_layer that_contains_annotation and_probably_also the toolbar._How can we_know for sure? We_can set its_Visibility_to 'off', and the toolbar stops appearing.
So naturally, one might be tempted to change_the_Parent of_that_pane,_but this results in the_error:
Error using matlab.graphics.shape.internal.AnnotationPane/setParentImpl
Cannot change parent_of AnnotationPane_object.

So what can be done about this? If_you_create new axes_in every new tab, 
hFig = figure();
hTG = uitabgroup(hFig);
for_iTab = 1 : 3
 _  hTab_=_uitab(hTG,_'title', "Tab" + iTab);
_   hPanel = uipanel(hTab);
_   hAxes(iTab) = axes(hPanel);
end

their_toolbars will be created correctly. From there,_it's a matter of relocating the_children (of the axes) and_updating the_limits/viewport.

A:

Since I considered the behaviour_described above a_bug, I_have filed it_to Matlab staff.
They responded to get_around this issue,_one shoud re-set the Parent of_the_axes toolbar. In_case_of_the test_class from above:
function_onSelectionChanged(self,_~, e)
__  self.Ax.Parent = e.NewValue;
 __ set(self.Ax.Toolbar,'Parent',[],'Parent',self.Ax);
end

 Q:

When we should make the_constructor Private & Why?_PHP

Possible_Duplicate:
In a PHP5 class,_when does a private constructor_get called? 

I have been reading_about OOP_recently and_came across this private constructor scenario. I did a Google search,_but couldn't find anything relevant to_PHP. 
In PHP 

When_do we_have_to define a_private_constructor?
What's the_purpose of using a private constructor? 
What_are the_pros & cons of using a_private constructor?

A:

There are several_scenarios_in which you might want to_make your constructor private. The common_reason is that in some_cases,_you_don't want outside code to_call your constructor directly, but force_it to use_another method to get an instance of_your_class.
Singleton pattern
