C++ OP appendFile value

General TouchDesigner Discussion
1

Hi,

I’ve got a custom OP with a File parameter (to load files from disk), I’m trying to figure out how to get the value of that File param when it changes but I can’t find that anywhere in the sample source or documentation, anyone got an idea about that?

Thanks.

2

You’ll have to keep the string around as a private variable and compare to it every execute

// in header file
private:
std::string myFilepath = "";

then

// in cpp file:
const char* updatedFilepath = inputs->getParFilePath("File");
if (myFilepath.compare(updatedFilepath) != 0) {
    // the updated filepath changed.
    myFilepath = updatedFilepath;
    // reload something
}
3

I eventually figured it out, thanks a lot!