queryinterface
Does IUnknown::QueryInterface() increment the reference count?
If I have an IUnknown *p开发者_运维百科tr, do I need to call Release() on every interface I obtain through ptr->QueryInterface(), in addition to calling ptr->Release() when I\'m done with ptr?[详细]
2023-04-03 20:49 分类：问答Using the RFCOMAPIlib (RightFax COM API): Unable to cast COM object
I\'m working with the RightFax COM API. What I want to do is simply send a fax with an attac开发者_如何学Pythonhment. Simple right? That question has been answered a few times. However, when I use som[详细]
2023-03-29 08:44 分类：问答Why is every successful QueryInterface() call followed by Release() call?
Why is a QueryInterface() call always followed by a Release() call? F开发者_C百科or example, I have seen a sample code from MSDN as below:[详细]
2023-02-11 04:34 分类：问答How to make 'will_paginate' lazyload in rails 3?
In rails3, almost all query interface change to be lazylo开发者_StackOverflowading now, but \'will_paginate\' will hit the database imediately after you use the \'paginate\' method. How can I make it[详细]
2023-01-12 00:13 分类：问答InvalidCastException, QueryInterface call failing on COM component
I\'m trying to use PCAnywhere\'s Ole automation in a .net applicaction I\'m currently developing (VS 2010, c#). PCA 12.5 comes with a couple tlb files that when I try to add as references through VS I[详细]
2023-01-10 06:53 分类：问答Access violation after GetInterface/QueryInterface in Delphi
First, I\'m very new in Delphi and COM, but I should build COM application in Delphi. I read a lot of articles and notes on the internets, but COM and COM in Delphi are still not clear to me.[详细]
2022-12-27 18:00 分类：问答Access violation exception from Delphi's Supports -> QueryInterface
I have the following piece of code: for i := 0 to FControlList.Count - 1 do if Supports(IMyControl(FControlList[i]), IMyControlEx) then[详细]
2022-12-23 20:55 分类：问答QueryInterface fails at casting inside COM-interface implementation
I am creating a tool in c# to 开发者_开发问答retrieve messages of a CAN-network (network in a car) using an Dll written in C/C++. This dll is usable as a COM-interface.[详细]
2022-12-23 02:51 分类：问答
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