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About OpenFileMapping

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Post time: 2020-1-2 19:10:01
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HANDLE hMap = CreateFileMapping (INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE | SEC_COMMIT, 0,256, "S_DATA");
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}

void CTest4Dlg :: OnButton2 ()
{
HANDLE m_hMap = OpenFileMapping (FILE_MAP_READ, FALSE, "S_DATA");
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}
I wrote an example, but when I use OpenFileMapping to open the mapping address, hMap is not equal to m_hMap, so when I call MapViewOfFile to read the data in button2, an error occurs.
Excuse me, why are hMap and m_hMap not equal? ​​Where am I wrong? Thank you for your help.
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Post time: 2020-1-2 19:12:01
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If your application is running in a termal server and you need access your file mapping from another user's account, add Global\\prefix to your object name, and modify the access control list when you create the object.
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 Author| Post time: 2020-1-2 20:36:01
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I just want to store a structure in memory. Access by other processes. I am not mapping a file into memory. I don't quite understand what you mean. Can you be more specific and post the code?
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Post time: 2020-1-2 22:03:01
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Then create a shared segment.
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Post time: 2020-1-2 22:36:01
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What is wrong?
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 Author| Post time: 2020-1-6 13:45:01
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already solved. Thank you
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Post time: 2020-9-4 16:45:02
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Host, how is sharing a structure realized, can you leave the source code or hint?
I read a structure into memory in process A, but process B did not get it.
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