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| Subject: PInvoke and nnotes.dll |
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| Product Area: Notes Client |
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| Technical Area: Customization |
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| Platform: Windows XP client |
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| Release: 8.5 |
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| Reproducible: -Reproducibility- |
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Hi all,
I am writing an addin using a C++ bridge dll calling out to a managed C# dll. Using late binding I am able to get hold of the current notes session etc, but my problems start when I try and make calls to functions in the nnotes.dll.
I am using PInvoke to call out to the function OSPathNetConstruct. My declaration is as follows:
[DllImport("nnotes.dll", EntryPoint = "OSPathNetConstruct")]
public static extern UInt16 OSPathNetConstruct(Int64 PortName, String ServerName, String FileName, ref StringBuilder retPathName);
I then call it as follows:
StringBuilder mySB = new StringBuilder(1024);
OSPathNetConstruct(0, ServerName, FileName, ref mySB);
The code executes without error but my StringBuilder is always empty.
I tried replacing ref StringBuilder with an IntPtr in the declaration, and used it in the following way:
IntPtr ptr = Marshal.AllocCoTaskMem(1024);
OSPathNetConstruct(0, ServerName, FileName, ptr);
string s = Marshal.PtrToStringAuto(ptr);
This just returns a jumble of characters that make no sense what so ever.
Any help would be greatly appreciated.
 
Feedback number WEBB7TJEP2 created by ~Tanita Nimnimarli on 07/01/2009
Status: Open
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