Get text from an edit control

I tried this:

int editlength;
int buttonid = 3324; // id to button, the numbers dont mean anything
int editid = 5652; // id to edit

LPTSTR  edittxt;

HWND button; // created in wWinmain as a button
HWND edit; // created in wWinMain as an edit control

// LRESULT CALLBACK WindowProc

switch(uMsg)
{
    case WM_COMMAND:
        if(wParam == buttonid)
        {
            filedit = GetDlgItem(hwnd, editid); // I tried with and without this
            editlength = GetWindowTextLength(filedit);
            GetWindowText(filedit, edittxt, editlength);

            MessageBox(hwnd, edittxt, L"edit text", 0);
        }
        break;
}

But I get don't see any text in the message box.