How to: Determine Available Memory

Article
08/28/2006

You can use the Windows CE GlobalMemoryStatus function to get information about the amount of available program or storage memory on the device, as shown in the following code example.

Note Because Windows Mobile-based devices dynamically adjust the relative amount of storage and program memory depending on the current needs of the user, your applications cannot programmatically force changes in the amount of memory allocated to running applications or data storage.

    MEMORYSTATUS   memInfo;
    STORE_INFORMATION   si;
    TCHAR   szBuf[MAX_PATH];

    // Program memory.
    memInfo.dwLength = sizeof(memInfo);
    GlobalMemoryStatus(&memInfo);

    wsprintf(szBuf, __TEXT("Total RAM: %d bytes\n Free: %d \nUsed: %d"), 
        memInfo.dwTotalPhys, memInfo.dwAvailPhys, memInfo.dwTotalPhys — 
        memInfo.dwAvailPhys);
    MessageBox(hwnd, szBuf, __TEXT("Program Memory"), MB_OK);

    // Storage memory.
    GetStoreInformation(&si);
  
    // dwStoreSize isn't exact due to compression. 
    wsprintf(szBuf, __TEXT("Free: %d"), si.dwFreeSize);
    MessageBox(hwnd, szBuf, __TEXT("Storage Memory"), MB_OK);

How to: Determine Available Memory

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