VectorDraw Developer Framework（VDF）是一个用于应用程序可视化的图形引擎库。有了VDF提供的功能，您可以轻松地创建、编辑、管理、输出、输入和打印2D和3D图形文件。
VectorDraw web library (javascript)不仅能打开CAD图纸，而且能显示任何支持HTML5标准平台上的通用矢量对象，如Windows，安卓，iOS和Linux。无需任何安装，VectorDraw web library (javascript)就可以运行在任何支持canvas标签和Javascript的主流浏览器（Chrome, Firefox, Safari, Opera, Dolphin, Boat等等）中。这意味着可以用DXF，DWG，DGN，SKP（Google的Sketchup），VDML等多种格式在任何台式、平板电脑，智能手机和便携式笔记本上展现出你的业务。
问：
是否存在文档的全局/默认文本高度？当用户想要输入高度值时，它无法用户创建此vdtext时的当前vdtext，用户如何才能在cmdText启动之前设置文本的高度？
答：
此项功能是存在的，想要达到此效果，请参阅以下代码：
private void button3_Click(object sender, EventArgs e) { vdDocument doc = vdFramedControl1.BaseControl.ActiveDocument; doc.New(); cmdTextWithHeight(doc, null, null, null, 5.0); cmdTextWithHeight(doc, "VDF version6", new gPoint(30,30), null, 15.0); cmdTextWithHeight(doc, null, new gPoint(10,10), 0.0d, 25.0); cmdTextWithHeight(doc, "hi", null, 30.0, 35.0); } private bool cmdTextWithHeight(vdDocument document, object TextString, object InsertionPoint, object RotationAngle, double TextHeight) { bool ret = false; double oldheight = document.ActiveTextStyle.Height; // store the old value to set this back after this finishes document.ActiveTextStyle.Height = TextHeight;// set the Height that is needed to activetextstyle if (document.CommandAction.CmdText(TextString, InsertionPoint, RotationAngle)) { vdText txt = document.ActiveLayOut.Entities[document.ActiveLayOut.Entities.Count - 1] as vdText; // get the text that was just created if (txt != null) { //... do other things there with the just-created-vdText if you like !! txt.Height = TextHeight; // see it to the Height so evene if activeTextStyle changes this remains. ret = true; } } document.ActiveTextStyle.Height = oldheight; // set the original value back. return ret; }