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Article View: borland.public.cppbuilder.nativeapi
Article #9802

Re: Same memory piece for 2 running applications?

#9802
From: Ramy
Date: Tue, 08 Jun 2004 14:43
30 lines
1802 bytes
Thanks very much.


"Eugene Mayevski [SecureBlackbox]" <mayevski@eldos.org> wrote:
>Ramy wrote:
>
>> Can i allocate an array like this - 
>> float array[500][400];
>> then write it's address ( &array[0][0] ) and size (500x400) in
>> a file, so the other application can read the file and access
>> the array by using the pointer and the size from this file?
>
>Yes. In C++ this is done via pragma. The code below is from my global 
>hook module.
>
>#pragma data_seg(".GLDATA")
>HHOOK hHookK = (HHOOK)0; // Keyboard hook
>HHOOK hHookL = (HHOOK)0; // LowLevel hook
>#pragma data_seg()
>
>If this doesn't work, you can work with Memory mapping directly. The 
>idea is to declare a pointer to an array and when you do 
>MapViewOfFile(), set this pointer. Then you will always access the same 
>block of memory in both applications.
>
>Eugene Mayevski
>EldoS Corp., CTO
>Networking and security solutions, development and consulting services
>http://www.eldos.com
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