com

in a thread, is there a difference if I use Coinitialize(nil) instead of CoInitializeEx(0, COINIT_MULTITHREADED); I use Delphi 7 but I presume the question can remain for other programming languages Thanks for your help. David Heffernan The former initializes COM in a way that puts the calling thread into its own single-threaded apartment (STA). The latter initializes COM in a way that puts the calling thread into a shared multi-threaded apartment (MTA). The two apartments have very different semantics, especially in how COM objects are accessed across thread boundaries. Threads in different

p ython可以使用一个第三方库叫做win32com达到操作com的目的， 我是安装了ActivePython的第三方库，从官网下载了安装包，该第三方库几乎封装了所有python下面的win32相关的操作，例如win32api,win32gui等等，可以说是比较齐全的了，下载地址可以自行百度获取。 主要是有个项目可能要用到ppt转换成视频的功能。 之后在想使用com操作excel还有word，ppt的时候，相信大部分人跟我一样，都是搜索python如何操作ppt，或者win32com操作office之类的搜索语句， 搜索完毕之后，点进去之后，几乎都直接是代码了，我觉得这样看得我云里雾里的，如果想做些其它操作都做不到，我当时的想法是想知道这些com的操作，究竟在哪里可以查找的到，因为网上只是有限的几个操作，注入往ppt添加图片，或者doc转成pdf之类的，而实际上的office的com操作时不止这些函数的，那么我们怎么知道其它的api呢？这样子我们就可以脱离网上的代码，自己编写com代码了。 一番查找，谷歌之后，在一个网页上终于找到了答案： Querying Interfaces Now, how does one investigate the detail of each object? For example, how does one access the name of

I want to call WaitHandle.WaitOne(TimeSpan) in .NET, but I'm on the STA thread and it pumps messages while waiting. For reasons that are beyond the scope of this question, I need to wait without pumping. How can I wait for a WaitHandle to be signaled without pumping messages? It seems in some scenarios that WaitHandle.WaitOne does not pump messages. But it does sometimes for some messages. See these links for more information on that: Managed and Unmanaged Threading in Microsoft Windows Managed blocking WaitForSingleObject or WaitForMultipleObjects are non-pumping waits; use p/invoke.

We have a .NET C# application that makes use of the Adobe ActiveX Controls. For versions 7-10 of both Adobe Acrobat and Adobe Reader, to use this control you were required to turn on the "Display PDF In Browser" setting. You could do this manually from the GUI using Preferences > Internet > Display PDFs in browser or programmatically by setting the registry settings directly HKEY_CURRENT_USER\Software\Adobe\(Product Name)\(Version)\Originals "bBrowserIntegration"=dword:00000001 Which follows the SDK reference http://www.adobe.com/devnet-docs/acrobatetk/tools/PrefRef/Windows/Originals.html

I have a managed assembly that gets called via COM Interop. Like a VBScript client, a Perl client, and so on. The classes are decorated with [ClassInterface(ClassInterfaceType.AutoDual)] [GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000E")] [ComVisible(true)] Then of course I do the regasm thing, and all the methods work just fine. But there are also enum types in the assembly. I'd like to use symbolic names COM applications, for the enum values. How do I expose the enums via COM interop? Do I just need to add these attributes? [GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000E")]