[Cocos2d-x Study Notes] text input, menu, memory management, Timer

Text input

Cctextfiledttf

Cctextfiledttf * textedit = cctextfiledttf: textfiledwithzaceholder ("input", "Arial", 33 );

Textedit-> atchwithime (); the keyboard is displayed.

Textedit-> setsecuretextentry (true); password format input

 

Cceditbox

Ccscale9sprite * BG = ccscale9sprite: Create ("abc.png"); 9 Mei map is easy to expand, saving resources

Cceditbox * editbox = cceditbox: Create (ccsize (100, 30), BG );

Editbox-> setplaceholder ("input here"); displays text by default

Editbox-> setinputflag (...); in various cases, such as uppercase letters and Case sensitivity.

 

Menu

Ccmenuitemfont * Item = ccmenuitemfont: Create ("this is item"); the default location is in the center

Menu-> addchid (item );

Ccmenu * menu = ccmenu: Create ();

Addchild (menu );

Set the corresponding function

Item-> settarget (this, menu_selector (function pointer ));

Void menu: menuhandler (cccobject *)

{

 

}

 

Menuitems

Ccmenuitematlasfont * itemaltas = ccmenuitematlasfont: Create ("123456", "labelatlasimg.png", 24, 32, '0 ');

Ccmenuitemimage * itemimage = ccmenuitemimaage: Create ("closenormal.png", "closesected.png ");

Ccmenuitemlabel * itemlabel = ccmenuitemlabel: Create (

Cclabelttf: Create ("this is lable TTF item", "Arial", 33 );

);

Ccmenuitemlabel * itemlableibmfont = ccmenuitemlabel: Create ();

 

Ccmenuitemtoggle * itemtoggle = ccmenuitemtoggle: createwithtarget ();

 

Vertical Alignment

Menu-> alignitemsvertically ();

 

Cocos Memory Management

C ++ constructor is language-Level Initialization

Init is the initialization of the Cocos service layer.

 

Coocs uses semi-automated Memory Management

Create () = Automatic Management

 

Memory Manager-> Access Reference Counter

New

Release ()

Retain () reference counter plus 1

Autorelease adds this object to the Memory Manager

 

Cocos semi-automatic memory management is implemented by ccobject

Counter

Counter setting function

 

For retain () objects, to avoid Memory leakage

Two methods can be used: release ();

~ Destructor ()

{

_ Arr-> release ();

}

 

Void onexit ()

{

Parent class: onexit (); The onexit () function of the parent class must be called first; otherwise, larger memory leakage will occur.

_ Arr-> release ();

}

 

Scheduleupdate (); let the frame call this-> Update (float DT) function cyclically

Void helloworld: handeer (ccobject * sender)
{
Ccnode * node = (ccnode *) sender;
Haha = node-> gettag ()-1000;
}

Void helloworld: Update (float delta)
{
If (1 = haha)
{
SP-> setpositiony (SP-> getpositiony () + 150 * delta );
Cclog ("1 ");
}
If (2 = haha)
{
SP-> setpositiony (SP-> getpositiony ()-150 * delta );
Cclog ("2 ");
}
If (3 = haha)
{
SP-> setpositionx (SP-> getpositionx ()-150 * delta );
Cclog ("3 ");
}
If (4 = haha)
{
SP-> setpositionx (SP-> getpositionx () + 150 * delta );
Cclog ("4 ");
}

Return;
}

[Cocos2d-x Study Notes] text input, menu, memory management, Timer