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Use another language to call a function: Difference between revisions
Use another language to call a function (view source)
Revision as of 22:21, 22 January 2010
, 14 years ago→‘In’ Parameters: lang c
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===‘In’ Parameters===
To connect a function to Tcl that passes an arbitrary C string as input, you'd use a short C thunk, like this:
<lang
Tcl_Obj *arguments[2];
int code;
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return 1;
}</lang>
===‘Out’ Parameters===
However, in the specific case of writing to a user-specified buffer (an “out” parameter) the thunk code would instead manage copying the result from the interpreter back to the buffer:
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