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AnswerRe: Getting an access to idispatch member of idispatch interface Pin
«_Superman_»12-Sep-10 20:21
professional«_Superman_»12-Sep-10 20:21 
GeneralRe: Getting an access to idispatch member of idispatch interface Pin
Altankhuu19-Sep-10 22:56
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AnswerRe: Getting an access to idispatch member of idispatch interface Pin
Lim Bio Liong26-Oct-10 2:38
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QuestionreportAppFactory.OpenDocument throws Invalid Cast exception (No such interfaces supported) [modified] Pin
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AnswerCrosspost - ignore Pin
Richard MacCutchan6-Sep-10 22:37
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QuestionHow to send NULL to a IUnknown** parameter when COM object is surrogate hosted Pin
Per Nilsson2-Sep-10 20:58
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AnswerRe: How to send NULL to a IUnknown** parameter when COM object is surrogate hosted Pin
tolw2-Sep-10 21:33
tolw2-Sep-10 21:33 
GeneralRe: How to send NULL to a IUnknown** parameter when COM object is surrogate hosted Pin
Per Nilsson2-Sep-10 21:42
Per Nilsson2-Sep-10 21:42 
Thanks for the response.

To clarify a bit. The parameter is used to return a COM pointer.
If the caller don't need the value, it sends NULL.

So my implementation has the following construction

if (ptr != 0) {
    *ptr = something;
    *ptr->AddRef ();
}



This i not uncommon in C++ programming, but for some resaon its problematic in COM.
AnswerRe: How to send NULL to a IUnknown** parameter when COM object is surrogate hosted [modified] Pin
tolw2-Sep-10 22:16
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GeneralRe: How to send NULL to a IUnknown** parameter when COM object is surrogate hosted Pin
Per Nilsson3-Sep-10 0:07
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QuestionWSACancelBlockingCall Pin
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QuestionHow to deal with such situation?(Need pass STL vector to dll under vs2008) [modified] Pin
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AnswerRe: How to deal with such situation?(Need pass STL vector to dll under vs2008) Pin
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QuestionObject Initialization Problem Pin
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AnswerRe: Object Initialization Problem Pin
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AnswerRe: How to call C# function from unmanaged C++ code.? Pin
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QuestionWhy CreateWindowEx() function failed on 64 Bit window XP Pin
am 200920-Jul-10 7:02
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QuestionRe: Why CreateWindowEx() function failed on 64 Bit window XP Pin
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AnswerRe: Why CreateWindowEx() function failed on 64 Bit window XP Pin
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