program memory usage

i am writing an application that requires me to obtain the memory usage for a given program under winNT and win2000.  very similar to  what  windows task manager gives you. there must be some API call to get this info. anyone know it? thanks.
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tylerdAsked:
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prozakCommented:
Check out the GlobalMemoryStatus API call.
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tylerdAuthor Commented:
globalmemorystatus will give the me only the memory usage for the operating system as a whole.  i need to know what apps are using what amount of memory.
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tylerdAuthor Commented:
Adjusted points to 150
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prozakCommented:
What you can do with that is call EnumProcesses to get all the process id's in the system and then call GetProcessMemoryInfo for each process id. Or if you already have a process id you can just call GetProcessMemoryInfo.
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prozakCommented:
This is in the Process Status Helper library and is available only on WinNT, this won't work on 95/98 to my knowledge.
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neoabacusCommented:
you could use the GetProcessHeap function to get the handle from the process.. then call HeapSize to determine the size of the process...

see: http://msdn.microsoft.com/library/psdk/winbase/memman_5u7k.htm
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prozakCommented:
Unfortunately GetProcessHeap will only give you a handle to the heap of the calling process. You can't use this to look at the heaps of other processes.
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