Release的函数

发布网友 发布时间：2022-04-23 17:29

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热心网友 时间：2023-10-11 01:14

IUnknown::Release Decreases the reference count of the interface by 1.
ULONG Release();
Parameters：
None
Return Values：
Returns the new reference count. This value is for diagnostic and testing purposes only.
Remarks：The object that exports the interface deallocates itself when its total reference count reaches 0. Use the IUnknown::AddRef method to increase the interface's reference count by 1.
Applications must call this method to release only those interfaces that were explicitly created in a previous call to IUnknown::AddRef,IUnknown::QueryInterface, or a creation function, such as Direct3DCreate9.
Requirements：
Header: Declared in Unknwn.h. 作用:
将dx接口的数量减1，即释放当前接口
函数原型：
ULONG Release(VOID);
返回值：
返回新的接口数。 此数值紧用于诊断和测试。
附注：
当继承接口而来的对象的总引用数量达到0时，他会释放自己。使用IUnknown::AddRef 函数可以增加
应用程序必须调用此函数释放这些接口，这些接口包括之前调用 IUnknown::AddRef IUnknown::QueryInterface产生的，也包括通过一个产生函数比如Direct3DCreate9，产生的。
注：引自DirectX sdk文档（翻译不太准确，参考）。