C# Signature:

[DllImport("kernel32.dll")]

    static extern int VirtualQueryEx(IntPtr hProcess, uint lpAddress, out MEMORY_BASIC_INFORMATION lpBuffer, int dwLength);

C# User-Defined Types:

MEMORY_BASIC_INFORMATION

[StructLayout(LayoutKind.Sequential)]

    public struct MEMORY_BASIC_INFORMATION
    {
    public UIntPtr BaseAddress;
    public UIntPtr AllocationBase;
    public uint AllocationProtect;
    public IntPtr RegionSize;
    public uint State;
    public uint Protect;
    public uint Type;
    }

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

uint MaxAddress = 0x7fffffff;
uint address = 0;
do
{
    MEMORY_BASIC_INFORMATION m = new MEMORY_BASIC_INFORMATION();
    int result = VirtualQueryEx(System.Diagnostics.Process.GetCurrentProcess().Handle, address, out m, Marshal.SizeOf(m));
    Console.WriteLine("{0}-{1} : {2} bytes result={3}", m.BaseAddress, (uint)m.BaseAddress + (uint)m.RegionSize, m.RegionSize,result);
    address = (uint)m.BaseAddress + (uint)m.RegionSize;

} while (address <= MaxAddress);

Alternative Managed API:

Do you know one? Please contribute it!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).