how to cast IntPtr to struct type -- dotnet general

nathans NO[at]SPAM avanade.com
9/2/2003 10:23:56 AM

System.Runtime.InteropServices.Marshal.PtrToStructure

Nathan Smith | Solution Developer
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BestNews
9/2/2003 6:28:00 PM

Hi all,
how to cast an System.IntPtr value to struct type.
Example:
protected override void WndProc(ref System.Windows.Forms.Message m)

{

const int WM_WINDOWPOSCHANGED = 0x0047;

if(m.Msg == WM_WINDOWPOSCHANGED)

{

string str="";

quickGetText(0,-1,ref str);

//HERE I NEED TO CAST m.LParam to WINDOWPOS struct

//WINDOWPOS wndptr = (WINDOWPOS)m.LParam;

return;

}

base.WndProc(ref m);

}

//C++ structure declaration

[StructLayout(LayoutKind.Sequential)]

struct WINDOWPOS

{

System.IntPtr hwnd;

System.IntPtr hwndInsertAfter;

int x;

int y;

int cx;

int cy;

System.UInt32 flags;

}

Can any help me out.

regards

subash

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