[英]Why is CoInitialize an undeclared identifier?
我使用UniDac組件連接到PostgreSQL 。 我的Query在單獨的線程中運行。 現在，當我在線程中使用CoInitialize時，我收到此編譯器錯誤：
- [DCC 錯誤] QryThread.pas(41)：E2003 未聲明的標識符：“CoInitialize”
為什么？
因為使用列表中缺少ActiveX 。
為什么我不需要在COM線程內創建的線程中調用CoInitialize？
[英]Why I don't need call CoInitialize in a thread created inside a COM Thread?
TThread和COM-“未調用CoInitialize”，盡管在構造函數中已調用CoInitialize
[英]TThread and COM - “CoInitialize has not been called”, although CoInitialize is called in the constructor
COM對象方法不在CoInitialize-d和創建對象的線程上執行
[英]COM object methods are not executed on the thread that CoInitialize-d and created the object
在與.NET中的COM交互之前，我是否需要調用CoInitialize？
[英]Do i need to call CoInitialize before interacting with COM in .NET?
在同一線程上CoInitializeEx（NULL，COINIT_MULTITHREADED）之后，CoInitialize（NULL）調用是否昂貴？
[英]Is CoInitialize(NULL) call expensive after CoInitializeEx(NULL, COINIT_MULTITHREADED) on the same thread?
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