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.NET Forum / Languages / Managed C++ / May 2005Shared Memory Questions
Hi I used shared memory quite a lot for IPC. The problem is that it is fixed size so that you cannot place something like a CString in it because CString will load it's buffer from the local heap which will mean nothing to another program accessing the pointer. I was wondering if any of the new CStringT type items or STL "string" objects can be declared so that the storage is fixed at declaration time. I hate using char[], but I have no choice it seems. It would be really fun to set up a shared heap using a memory manager with mutexes, etc. I looked at ACE, but there seems to be a lot baggage. I'm converting VC 6.0 MFC apps to VC 7.0 and beyond, maintaining MFC for the most part. Thanks Bill Hi Bill, >I was wondering if any of the new CStringT type items or STL "string" >objects can be declared so that the storage is fixed at declaration time. The new CStringT in VC7 is a template class used to manipulate variable-length character strings by default. The memory to hold these strings is allocated and released through a string manager object, associated with each instance of CStringT. These default string types use a string manager that allocates memory from the process heap (in ATL) or the CRT heap (in MFC). However, you can override the default memory management behavior of CStringT, creating allocators specifically customized to your requirement. For more detaled infor and related topics, please refer to the following MSDN links: Memory Management and CStringT http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html /vcconMemoryManagementCStringT.asp Thanks! Best regards, Gary Chang Microsoft Community Support -------------------- Get Secure! ¡§C www.microsoft.com/security Register to Access MSDN Managed Newsgroups! http://support.microsoft.com/default.aspx?scid=/servicedesks/msdn/nospam.asp &SD=msdn This posting is provided "AS IS" with no warranties, and confers no rights. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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