WordPress.org

1. Upload the wp-dropdown-posts.php file to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress

3. Paste the following code to your theme file, e.g in your sidebar.php

That will show latest 10 posts in dropdown. Title that has more than 20 characters will be truncated.

Parameter

• sort_order
• sort_column
• exclude
• include
• meta_key
• meta_value
• authors
• number
• offset
• name
• show_option_none
• show_option_no_change
• option_none_value

Description about above parameters can be found here http://codex.wordpress.org/Template_Tags/wp_dropdown_pages#Other_Parameters

• jump_to, if is set to 0, the dropdown will not clickable, default 1
• cut_word, set to 1 to cut long titles, default 0
• cut_limit, number of first characters will be shown, default 30
• cut_replacement, the replacement of truncated characters, default ...