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I've been using the COM interface to achieve the specified text search, replace function also has, however, I still need to achieve the effect of a text inside the doc a fixed position, you will need to use internal text box function into word file, but I don't know how to get to the internal document text content within the text box, online information is to use spire. Doc this third-party plug-in implementation, information about the COM interface almost impossible to find, ever developed a similar function?
How to get to the content of the text box?