Custom Post Type Capabilities — Enable Edit, Disable Create and Delete

I’m trying to configure capabilities for a custom post type. I want to enable editing, but disable creating and deleting. create_posts cannot be set to false unless delete_posts is also false, but it seems that this combination disables the editing screen.

Thanks!

There are a lot of capabilities, you can set for your post type.

foreach ( self::$todo_roles as $role ) {            
     $wp_roles->add_cap( $role, 'edit_' . self::$post_type_1 );
     $wp_roles->add_cap( $role, 'read_' . self::$post_type_1 ); 
     $wp_roles->add_cap( $role, 'delete_' . self::$post_type_1 );
     $wp_roles->add_cap( $role, 'edit_' . self::$post_type_1 . 's' );
     $wp_roles->add_cap( $role, 'edit_others_' . self::$post_type_1 . 's' );    
     $wp_roles->add_cap( $role, 'publish_' . self::$post_type_1 . 's' );
     $wp_roles->add_cap( $role, 'read_private_' . self::$post_type_1 . 's' );   
     $wp_roles->add_cap( $role, 'delete_' . self::$post_type_1 . 's' ); 
     $wp_roles->add_cap( $role, 'delete_private_' . self::$post_type_1 . 's' ); 
     $wp_roles->add_cap( $role, 'delete_published_' . self::$post_type_1 . 's' );
     $wp_roles->add_cap( $role, 'delete_others_' . self::$post_type_1 . 's' );  
     $wp_roles->add_cap( $role, 'edit_private_' . self::$post_type_1 . 's' );
     $wp_roles->add_cap( $role, 'edit_published_' . self::$post_type_1 . 's' ); 
} 

With something like the above you can add capabilities the roles.

As hint to the source. The self::$post_type_1 is a variable in a class for the custom post type. The foreach loop is to add this capabilities often to different roles.