语法：

steam_ugc_set_item_preview(ugc_update_handle, preview);

返回： 布尔值

描述

This function will set the preview image to be used for the given item. The image should be supplied as either a PNG, JPG or GIF format file with a maximum size of 1MB. The path to the image should be a relative path in the save are or the game bundle (ie: an included file). The update handle is the value returned when you called the function steam_ugc_start_item_update. The function will return true if the API was successfully accessed and false if there was an issue.

例如：

var app_id = steam_get_app_id();
var updateHandle = steam_ugc_start_item_update(app_id, global.Publish_ID);
steam_ugc_set_item_title(updateHandle, "My workshop item(3)!");
steam_ugc_set_item_description( updateHandle, "testing workshop...");
steam_ugc_set_item_visibility(updateHandle, ugc_visibility_public);
var tagArray;
tagArray[0] = "Test";
tagArray[1] = "New";
steam_ugc_set_item_tags(updateHandle, tagArray);
steam_ugc_set_item_preview(updateHandle, "promo.jpg");
steam_ugc_set_item_content(updateHandle, "WorkshopContent1");
requestId = steam_ugc_submit_item_update(updateHandle, "Version 1.2");

The above code gets the game ID, then uses that along with a previously stored published file ID to generate an update handle for the item. This handle is then used to update various pieces of information before the update is pushed to the Workshop servers.