在空闲时候，该UI线程同样要对应用程序的窗体消息队列中的所有消息进行负责。
During idle time, the UI thread is also responsible for processing all messages in the application's Windows message queue.
退出队列是一个单线程操作，即使消息流本身配置为多实例时也是如此。
Dequeuing is single threaded, even if the message flow itself is configured for multiple instances.
只有当队列中需要处理的消息太多时才会创建新的mdb实例且发起新的线程。
New MDB instances will get created, and the new threads will be spawned only if so many messages are there on the queue that need to be processed.
例如，全局池包含消息队列，其中用于网络通信的poll线程存放来客户机的消息。
For example, the global pool contains the message queues where poll threads for network communications deposit messages from clients.
maxConcurrency—这个属性控制可以从JMS队列同时交付到MD b线程的消息数量。
MaxConcurrency - this property controls the number of messages that can be concurrently delivered from the JMS queue to the MDB threads.
IBMWebSphereMQMDB实现使用单线程来分派输入队列中的传入消息。
The IBM WebSphere MQ MDB implementation uses a single thread to dispatch incoming messages from the input queue.
函数功能：该函数可以获得与调用线程的消息队列相关的活动窗口的窗口句柄。
The return value is the handle to the active window attached to the calling thread's message queue. Otherwise, the return value is NULL.
STA线程或者等待而且不发送消息，或者执行一个长时间的操作而且不允许发送消息队列。
The STA thread is either waiting without pumping messages or is performing lengthy operations and is not allowing the message queue to pump.
如何使用线程池和多线程矩阵乘法的消息队列？
How to use thread pool and message queues in Multithreaded Matrix Multiplication?
所有线程刚生成时都是没有消息队列的。当线程第一次调用特定的函数时，消息队列就被创建了。
The system creates a thread's message queue when the thread makes its first call to one of the USER or GDI functions.
应用程序的消息循环是内部程序循环，它从线程的消息队列检索消息，然后转换这些消息，之后将它们发送给要处理的应用程序。
An application's message loop is an internal program loop that retrieves messages from a thread's message queue, translates them, and then sends them to the application to be handled.
应用程序的消息循环是内部程序循环，它从线程的消息队列检索消息，然后转换这些消息，之后将它们发送给要处理的应用程序。
An application's message loop is an internal program loop that retrieves messages from a thread's message queue, translates them, and then sends them to the application to be handled.
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