Exception problem for System.Runtime.InteropServices.HandleRef.

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Hi i need help with this.
Currently im doing a google earth application.
but i've met with this problem,

It's showing me this error:
A using namespace directive can only be applied to namespaces; 'System.Runtime.InteropServices.HandleRef' is a type not a namespace

What can i do ?
Please help. Thanks.

Posted 26-Jul-11 17:02pm

bearbear91

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Praveen Kullu · Answer 1 · 2011-07-26T17:59:00

Solution 1

you should be doing this:
Remove HandleRef. HandleRef is a type

instead add

using System.Runtime.InteropServices

to your list of namespaces.

Posted 26-Jul-11 17:59pm

Praveen Kullu

Comments

bearbear91 27-Jul-11 0:26am

i've added that in, but it still doesn't work. thanks.

Kim Togo 27-Jul-11 2:28am

What does not work? It cannot compile, it has runtime error ?

bearbear91 27-Jul-11 3:58am

yeah. it has a error saying override. the following is my coding:

protected override HandleRef BuildWindowCore(HandleRef hwndParent)
{
// start google earths
EARTHLib.ApplicationGE ge = null;
ge = new ApplicationGEClass();

ge.LoadKmlData(@"\Resources\Etc\GoogleEarth.kml");

int googleearth = ge.GetRenderHwnd();

IntPtr hwndControl = IntPtr.Zero;
IntPtr hwndHost = IntPtr.Zero;
int hostHeight = 200;
int hostWidth = 300;

hwndHost = CreateWindowEx(0, "static", "",
WS_CHILD | WS_VISIBLE,
0, 0,
hostHeight, hostWidth,
hwndParent.Handle,
(IntPtr)HOST_ID,
IntPtr.Zero,
0);

int oldPar = SetParent(googleearth, (int) hwndHost);
// check to see if I'm now a child
if (IsChild(hwndHost.ToInt32(), googleearth)) {
System.Console.WriteLine("now a child");
}

return new HandleRef(this, hwndHost);
}

protected override void DestroyWindowCore(HandleRef hwnd)
{
throw new NotImplementedException();
}
}
}

It's not the full coding. It's where the error are found.