我自己设法想出了一个解决办法。要获取特定帖子类型的帖子列表，必须将wp.data.select( \'core\' ).getEntityRecords() 中的选择器withSelect 高阶组件，这是一个使用选择器为组件提供道具的函数。然后，我们可以用这些数据填充SelectControl。

export const settings = {
    title: __( \'Post Selection\', \'plugin-domain\' ),
    category: \'common\',
    attributes: {
        id: {
            type: \'integer\',
            default: 0,
        },
    },

    edit: withSelect( ( select ) => {
        return {
            posts: select( \'core\' ).getEntityRecords( \'postType\', \'my_custom_post_type\', { per_page: -1 } )
        };
    } )
    ( props => {
        const { attributes, className } = props;

        const setID = value => {
            props.setAttributes( { id: Number( value ) } );
        };

        if ( ! props.posts ) {
            return __( \'Loading...\', \'plugin-domain\' );
        }

        if ( props.posts.length === 0 ) {
            return __( \'No posts found\', \'plugin-domain\' );
        }

        var options = [];
        options.push( {
            label: __( \'Choose a post...\', \'plugin-domain\' ),
            value: \'\'
        } );

        for ( var i = 0; i < props.posts.length; i++ ) {
            options.push( {
                label: props.posts[i].title.raw,
                value: props.posts[i].id
            } );
        }

        return (
            <Placeholder
                key=\'post-selection-block\'
                icon=\'admin-post\'
                label={ __( \'Post Selection Block\', \'plugin-domain\' ) }
                className={ className }>
                    <SelectControl
                        label={ __( \'Select a post:\', \'plugin-domain\' ) }
                        value={ attributes.id }
                        options={ options }
                        onChange={ setID }
                    />
            </Placeholder>
        );

    } ),

    save( { attributes } ) {
        ... omitted for brevity ...
    },

};

registerBlockType( \'my/postselectblock\', settings );