pcsoft.us.windevCopyright 2026, PC SOFT18 Dec 2017 22:35:46 Z18 Dec 2017 21:54:56 ZHi everyone. I've written a service in WD22 that is basically a multi-threaded TCP socket server. It accepts connections from other applications, carries out a process that may require it to access one of a couple local HFSQL file. My question is, how do those pointers to the files work in a multi-threaded application? I seem to be very occasional running into a crash where it's trying to modify one of those files, but it's getting an error "file is read-only. Unable to perform the operation." Currently, the way I'm handling those files is in the procedure that is doing the modification" I issue HOpen(file) HReadSeekFirst() to find the desired record if HFound() = true then HModify() Else HAdd() End HClose() Should I instead issue an HOpen() in the application init procedure and just leave it open? Thanks!30WEBDEVen_UShttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/63720-wd22-question-about-hfsql-files-multi-threaded-application/read.awpmoderateur@pcsoft.fr (El moderador)webmaster@pcsoft.fr (El webmaster)fromwebpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/63720-wd22-question-about-hfsql-files-multi-threaded-application-63721/read.awp18 Dec 2017 22:35:46 ZHi Robert, it depends how you create your thread, and the help of the thread functions explains clearly the different cases…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/63720-wd22-question-about-hfsql-files-multi-threaded-application-63721/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/63720-wd22-question-about-hfsql-files-multi-threaded-application-63721/read.awp[WD22] Question about HFSQL files in multi threaded application