Dear Paul, Have you tried to moved your declaration of thread to AfterConstruction of the form ? because creating a Thread on construction form is some times could caused you a pain why ? because it is possible that the thread accessing variable that possible not created yet.so it is better safe to create the thread on AfterConstruction Procedure or.. u can create a trigger from the form ex: when showing the form then create the thread.
regards, Eddy Wijaya VCL,Tips,Snippet All Delphi And Codegear Related Could Be Found here http://www.alldelphi.com Paul Bennett wrote: > > Hi All, > Can anyone help with this one? > > I have an application written using D7 Ent. which runs fine on XP and > 98SE. Currently the application loads its data from a CD, but the > powers that be have decided that they would like to network the > application and download the data periodically across the LAN. > > In order to achieve this I have created a small helper class > (TAutoDownload) which is owned and created by the main form. This > helper class is created during the Form Creation procedure and freed > by the Form Destructor. > > TAutoDownload contains 2 TThread objects, 1) a Timer Thread, and 2) > the thread that handles the actual download of the Data Files. Both > threads are created as and when required by the Class. > > The new application works fine when running on XP, but as soon as I > try to run it under 98' it crashes with the following error: > > Error Creating Form: Thread Error: The Parameter is incorrect (87). > > As far as I can tell this error occurs during the Main Forms Creation > (but before any of the FormCreate code executes - ie the code never > gets as far as a breakpoint on the first line of the FormCreate > procedure). > > I've done a Google on TThread Errors, Delphi 7 and Win98, but the only > hit that seems to be relevant refers to bug in the TThreads destructor > method. I have implemented the suggested change, but it has had no effect. > > Any ideas would be very welcome. > > TIA > > Paul. > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG. > Version: 8.0.100 / Virus Database: 270.4.0/1508 - Release Date: 6/18/2008 > 9:08 PM >
