選擇器類似於c++中類函式指標機制,用來建立函式指標,表示被指向的類方法
schedule_selector(selector)定時器
callfunc_selector(selector)
callfuncn_selector(selector)
callfun***_selector(selector)
callfunco_selector(selector)
menu_selector(selector)選單
event_selector(selector)事件
compare_selector(selector)
在ccobject中定義了其相關的巨集
typedefvoid (ccobject::*sel_schedule)(float);
typedefvoid (ccobject::*sel_callfunc)();
typedefvoid (ccobject::*sel_callfuncn)(ccnode*);
typedefvoid (ccobject::*sel_callfun***)(ccnode*,void*);
typedefvoid (ccobject::*sel_callfunco)(ccobject*);
typedefvoid (ccobject::*sel_menuhandler)(ccobject*);
typedefvoid (ccobject::*sel_eventhandler)(ccevent*);
typedefint (ccobject::*sel_compare)(ccobject*);
#define schedule_selector(_selector) (sel_schedule)(&_selector)
#define callfunc_selector(_selector) (sel_callfunc)(&_selector)
#define callfuncn_selector(_selector) (sel_callfuncn)(&_selector)
#define callfun***_selector(_selector) (sel_callfun***)(&_selector)
#define callfunco_selector(_selector) (sel_callfunco)(&_selector)
#define menu_selector(_selector) (sel_menuhandler)(&_selector)
#define event_selector(_selector) (sel_eventhandler)(&_selector)
#define compare_selector(_selector) (sel_compare)(&_selector)
在ccnode中
包含各種schedule定時器的操作
在ccmenuitem中
ccmenuitem* ccmenuitem::create(ccobject*rec, sel_menuhandlerselector)
在ccactioninstant中定義了cccallfunc系列函式
cccallfunc系列函式包括
cccallfunc、
cccallfunn、
cccallfun***、cccallfunco,用來中動作中進行方法的呼叫。
cccallfunc呼叫的方法不包含引數。
cccallfunn呼叫的方法包含乙個ccnode*型別的引數,表示執行動作的物件。
cccallfun***呼叫的方法包含兩個引數,不僅有乙個節點引數,還有乙個自定義引數(ccnode*與void*)
cccallfunco呼叫的方法則包含乙個ccobject*型別的引數
cccallfunc *cccallfunc::create(ccobject* pselectortarget,sel_callfunc selector)
cccallfuncn * cccallfuncn::create(ccobject* pselectortarget,sel_callfuncn selector)
cccallfun*** * cccallfun***::create(ccobject* pselectortarget,sel_callfun*** selector, void* d)
cccallfunco *cccallfunco::create(ccobject* pselectortarget,sel_callfunco selector, ccobject* pobject)
例子:
ccaction *a1=cccallfunc::create(this, callfunc_selector(a::f1));
this->runaction(a1);
ccaction *a2=cccallfuncn::create(this, callfuncn_selector(a::f2));
this->runaction(a2);
int i;
ccaction *a3=cccallfun***::create(this, callfun***_selector(a::f3),(void*)&i);
this->runaction(a3);
ccobject *obj; ccaction *a4=cccallfunco::create(this, callfunco_selector(a::f4),obj);
this->runaction(a4);
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