[fpc-pascal]Problems linking to TclTk

[cespern at free.fr]

 Hello 
 
> Does anyone have experience with this type of thing. 
 
yes, when building a wrapper for the Sablotron library using CDECL procedure and PChar Parameters . 
As far I remember, mine was due to the fact that I must managed a string variable outside of a 
callback procedure  and not as a local variable when converting it to a PChar passed to another 
procedure of the library. When not doing this the result were not the same every time and I have 
sporadic memory violation error depending on the size of the string and others strange issues. 
 
Hope this helps, 
 
Christophe