$form[myfield] is an array. Assuming you only want the value then use $form[myfield]['#value'] or $form[myfield]['#default_value'].
From: Jeff Greenberg <jeff@ayendesigns.com>
To: development@drupal.org
Sent: Thu, September 2, 2010 8:20:20 PM
Subject: [development] Form fields in a table
Using FAPI for a form (D6), and in the form is a markup field, which is a table created with theme(). Some of the cells in the table need to be populated with form fields. The contents of the table is being sent to theme() as $rows, and I've tried having the cells in question defined as $form[myfield] that has been created earlier, but I end up with an empty cell, and the form field appearing where it was first defined, prior to the table... so...
$form[myfield] = array(...
$rows[this_row] = array(cellval, cell2val, $form[myfield] ...
isn't working.
I
need something like
Row 1 text text selectbox text textfield text