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wRTF2PDF控件包含了wPDF控件所有的功能，同时包含了强大的RTF开发功能，可以将RTF 文件转化为PDF 文件。因为DLL形式的wRTF2PDF控件要比同类型的wPDF控件要大，因此购买wRTF2PDF控件的用户可以同时获得这两个DLL控件，并且还将同时获得可用于这两个控件的解密匙。

　　通过这个强大的DLL控件，您可以在您的应用程序中直接创建具备完整功能PDF文件。

　　wRTF2PDF的ActiveX控件只用于在VB语言中使用wRTF2PDF DLL的情况。

　　wRTF2PDF的DLL控件和OCX控件在创建PDF文件的时候，所提供的接口程序功能都非常强大，包括链接，分级显示，缩略图，图形显示等功能。您还可以从与常用图像编码相兼容的图像处理设备（比如数码相机）中，直接获取图像信息创建PDF文件，而不需要将其转化为常用图像编码。

　　wRTF2PDF控件同时支持命令行参数。

　　在我们所提供的wPDF控件包和wRTF2PDF控件包中都包含了支持.NET的控件形式，因此您可以在任意一个自己喜欢的.NET语言中，很方便地使用这些控件所提供的强大功能。wPDF控件不仅仅提供了PDF文档所具有的工具和事件功能,它还包含了.NET语言的功能特性,比如用于图形绘制的“绘图”对象等。相关信息请查阅.NET语言的联机说明手册。

　　如果您要在VB语言中使用wRTF2PDF控件，您必须先将wRTF2PDF OCX的控件库wPDF_X01添加到您的工具箱内，然后您才可以在窗体中添加一个PDF控件对象。

　　您可以在源程序中添加如下语句，用来导出一个RTF文件：

　　If PDFControl1.StartEngine("c:\wpPDFControl\DLL\wPDFControlDemo.dll", "LicenseName", "LicenseCode", 0) = True Then
　　PDFControl1.BeginDoc "c:\test.pdf", 0
　　PDFControl1.ExecIntCommand 1000, 0
　　PDFControl1.ExecStrCommand 1002, "c:\test.rtf"
　　PDFControl1.ExecIntCommand 1100, 0
　　PDFControl1.EndDoc
　　Else
　　MsgBox "We were not able to load the PDF Engine DLL", 0, "Error!"
　End If


　　需要注意的是：在执行上述语句之前，您必须先执行StartEngine过程，并且要设定PDF DLL控件的文件路径。如果您的电脑系统中存在多个不同的PDF文件打开工具，您也不必为软件冲突而担心，我们可以按您的要求定做相应的DLL控件。

wRTF2PDF does everything that wPDFControl can, and also includes a powerful RTF engine to convert RTF documents to PDF files. Since the wRTF2PDF DLL is quite a bit larger than the PDFControl DLL, the customers of RTF2PDF will receive both DLLs, plus a key which works for both.

　　Create full-featured PDF files directly from your application using this powerful DLL.
An ActiveX is included to simplify the usage of the DLL in VB.

　　The DLL and OCX provide you with a powerful API to create PDF files, including links, outlines, thumbnails, graphics, etc. You can use a graphic device handle (DC) which is compatible to the usual printing code. You don't need to convert the code you currently use for printing to create PDF files!

　　The RTF engine included can be utilized by using certain command codes.

　　Our PDF engines PDFControl and RTF2PDF now come with a native .NET wrapper class which makes it easy to 　use the power of these DLLs under your favorite .NET language. Not only does the wrapper publish the properties and events of the PDF engine, it also includes native .NET features such as a 'Graphics' object for your drawing code. Please read the online manual of the .NET wrapper

　　To use this DLL in VB you have to add the OCX library wPDF_X01 to your toolbox.Then you can create one PDFControl object on your form.

　　It can be then used like this to export a RTF file:

　　If PDFControl1.StartEngine("c:\wpPDFControl\DLL\wPDFControlDemo.dll", "LicenseName", "LicenseCode", 0) = True Then
　　PDFControl1.BeginDoc "c:\test.pdf", 0
　　PDFControl1.ExecIntCommand 1000, 0
　　PDFControl1.ExecStrCommand 1002, "c:\test.rtf"
　　PDFControl1.ExecIntCommand 1100, 0
　　PDFControl1.EndDoc
　　Else
　　MsgBox "We were not able to load the PDF Engine DLL", 0, "Error!"
　End If

　　Note that you have to execute StartEngine and set the path of the PDF DLL. This way it is possible to have different PDF engines on your system, so there is no need to worry about a version conflict. We are also able to customize the DLL for you.