Printing a form on a page with drupal_get_form (Drupal 7) [SOLVED]

Mini tutorial to use D7 config page, query a table, display the results in a table, with a pager, drupal_get_form and renderable arrays all rolled up into one neat little package.

I wanted to weigh in on this, even though it is [SOLVED], because this page does show up high in google results.

My code may not be perfect, or the best way to do this, but hopefully it saves people some time.

I hacked out a lot of code specific to my project, but here is working(after some tweaks) code:

	$items['admin/config/mymodule'] = array(
		'title' => t('My Module'),
		'page callback' => 'system_admin_menu_block_page',
		'description' => 'Configure My Module.',
		'access arguments' => array('my permission'),
		'position' => 'right',
		'weight' => 10,
		'file' => 'system.admin.inc',
		'file path' => drupal_get_path('module', 'system'),
	);
	$items['admin/config/mymodule/cool_beans'] = array(
		'title' => 'Cool Beans',
		'description' => 'This are some Cool Beans.',
		'page callback' => 'mymodule_admin',
		'access arguments' => array('my permission'),
	);

function mymodule_admin() {
	$build = array();
	$rows = array();
	$header = array('Column One', 'Column Two', 'Column Three',);
	
	$query = db_select('mymodule_mytable')
		->extend('PagerDefault')
		->extend('TableSort');
	$query->fields('mymodule_mytable', array('field_1', 'field_2', 'field_3',))
		->condition('in_db', 0)
		->orderBy('field_1', 'ASC')
		->limit(10);
	$results = $query->execute();
	
	foreach ($results as $line) {
		$rows[] = array(
			$line->field_1,
			$line->field_2,
			$line->field_3,
		);
	}
	
	$variables = array('header' => $header, 'rows' => $rows);
	$content = theme('table', $variables, array());
	
	$build['content'] = array(
		'this_does_not_matter_too_much1' => array(
			'#markup' => $content,
		),
		'this_does_not_matter_too_much2' => drupal_get_form('mymodule_sample_form'),
	);
	
	$build['pager'] = array(
		'#theme' => 'pager',
		'#weight' => 5,
	);
  
  return $build;
}

function mymodule_sample_form($form, &$form_state) {
	$form = array();
	$form['submit'] = array (
		'#type' => 'submit',
		'#value' => 'Do Cool Things',
	);
	
	return $form;
}

function mymodule_sample_form_validate($form, &$form_state) {
}

function mymodule_sample_form_submit($form, &$form_state) {
}

Works perfectly, Thanks!

But If we return the same rendered form instead of print, It will display as normal page with theme.

return drupal_get_form('form_name');

If you are using form validation this will not work if you are printing the form directly in the template. To get the validation to work, assign the form to a variable in a preprocess function and then print that variable out in the template (see Jaypan's comment at form_set_error() should only). So for example in your template.php file you can put: 

function my_theme_preprocess_page(&$variables) {
  $variables['code'] = drupal_get_form('form_id');
}

And then in your template, eg page.tpl.php you can then put: 

<?php print drupal_render($code); ?>