Yes, there are plenty of solutions for this. We are using TerminalWorks' UniTwain application. The users are very satisfied as it is pretty simple to use and it does it's job. This is the download link: http://www.terminalworks.com/unitwain
you need Data Source, it adds virtual scanner, which gives you the file if asked. dont know if the received sample file can be changed, but for testing its good.
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Source Forge 上的 twain 示例应用程序附带的 Twain 示例驱动程序应该有您想要的内容。
http://sourceforge.net/projects/twain-samples/文件/TWAIN%202%20Sample%20Application/
The Twain sample driver that comes along with the twain sample application up on source forge should have what you're looking for.
http://sourceforge.net/projects/twain-samples/files/TWAIN%202%20Sample%20Application/
是的，有很多解决方案。我们正在使用 TerminalWorks 的 UniTwain 应用程序。用户非常满意，因为它使用起来非常简单，而且功能齐全。这是下载链接：http://www.terminalworks.com/unitwain
Yes, there are plenty of solutions for this. We are using TerminalWorks' UniTwain application. The users are very satisfied as it is pretty simple to use and it does it's job. This is the download link: http://www.terminalworks.com/unitwain
以上都是付费应用。
有一个开源的：
http://sourceforge.net/projects/twain-samples/files/
您需要数据源，它添加了虚拟扫描仪，如果需要，它会为您提供文件。
不知道是否可以更改收到的示例文件，但对于测试来说它很好。
both of above are paid apps.
there is one open source:
http://sourceforge.net/projects/twain-samples/files/
you need Data Source, it adds virtual scanner, which gives you the file if asked.
dont know if the received sample file can be changed, but for testing its good.