ReactDOM.render()目前会返回对根组件ReactComponent实例的引用。 但是,目前应该避免使用返回的引用,因为它是历史遗留下来的内容,而且在未来版本的 React 中,组件渲染在某些情况下可能会是异步的。 如果你真的需要获得对根组件ReactComponent实例的引用,那么推荐为根元素添加callback ref。
目前应该避免使用返回的引用，因为它是历史遗留下来的内容，而且在未来版本的 React 中，组件渲染在某些情况下可能会是异步的。 如果你真的需要获得对根组件 ReactComponent 实例的引用，那么推荐为根元素添加 callback ref 。
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u32 Handle;Xil_AssertVoid(NULL!= CallBackRef); InstancePtr = (XUsbPs *) CallBackRef;switch(EventType) {/* Handle the Setup Packets received on Endpoint 0. */caseXUSBPS_EP_EVENT_SETUP_DATA_RECEIVED: Status = XUsbPs_EpGetSetupData(InstancePtr, EpNum, &SetupData);if(XST_SUCCESS == ...
m_logger.Error("Failed to handle log callback, reason : "+ ex.Message); } } 开发者ID:GoshaDE,项目名称:nVLC,代码行数:30,代码来源:LogSubscriber.cs 示例6: ArgIterator ▲点赞 1▼ unsafepublic ArgIterator (RuntimeArgumentHandle arglist,void*ptr) ...
void callbackSignature(int cmd, void * data); On Node.js side, // Concrete type definition var Type1 = StructType({ key: ref.types.CString }) var Type1Ptr = ref.refType(Type1) // My callback, called with different 'data' type, depending on 'cmd' arg ...
void testFunc(CALLBACK p){ printf("right!\n"); } ... CALLBACK p = getNext; testFunc(p); 当涉及到标准C时,转换到 void * 然后再转换到一个函数是双重无效的,但它在 POSIX 中被允许作为一个扩展,它有 dlsym 函数,返回一个 void *,可以指向一个函数或一个对象。
(struct PLAY *play); int flag; }PLAY; /*FMOD_RESULT F_CALLBACK mycallback(FMOD_CHANNEL *channel, FMOD_CHANNEL_CALLBACKTYPE type, void *commanddata1, void *commanddata2) { if(type==FMOD_CHANNEL_CALLBACKTYPE_END)printf("ddd"); return FMOD_OK; }*/ static void play_upsystem(void *p...
Status EnumerateMetafile( [in] const Metafile *metafile, [in] const Point *destPoints, [in] INT count, [in, ref] const Rect & srcRect, [in] Unit srcUnit, [in] EnumerateMetafileProc callback, [in] VOID *ca...
pthread_create(&pthread, NULL, usbcallback,comment); invalid conversion from 'void* (*)()' to 'void* (*)(void*)'The pthread_* functions are C language. The C++ prototype for a thre pthread ndk 转载 精选 lindt 2016-11-28 13:58:04 3432阅读 void func()函数和void func(void)函数...