In my case it's in a normal gui application at one end and a service type application in the other which uses a timer to check for incoming commands.
I normally do something like this. ShareRec.Filename := 'Whatever'; ShareRec.Command := 2; While ShareRec.Command <> 0 do Sleep(10); The service application detects the command = 2, does something with the filename, and sets command to 0 when finished. The While loop usually only executes once so there is no delay for the user.. You could run this in a thread if it was going to take a while. I didn't know about NewInstance to allocate the object where you need it. There is still an issue with strings and pointers inside the object. Simple records work well enough for me. Ross. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Leigh Wanstead Sent: Wednesday, 9 May 2007 14:51 To: NZ Borland Developers Group - Delphi List Subject: RE: [DUG] Sending data between process on same computer on windows Hi Ross, Is the code sample inside a dos command line application or you start a thread to do that communication? TIA Regards Leigh www.smootharm.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Ross Levis Sent: Wednesday, May 09, 2007 2:24 PM To: 'NZ Borland Developers Group - Delphi List' Subject: RE: [DUG] Sending data between process on same computer on windows I guess you've read the readme.txt which explains all the properties and methods. Install it as a component. Drop the component on a form in 2 programs. I use a record pointer to share. Here is a small example. My record actually contains many more fields. type TShareRec = record Command: Integer; Filename: String[255]; End; PShareRec = ^TShareRec; Var ShareRec: PShareRec; Begin SharedMemory.ShareName := 'Something'; SharedMemory.Size := Sizeof(TShareRec); If not SharedMemory.OpenMemory then SharedMemory.CreateMemory; ShareRec := SharedMemory.MapMemory; The above will work in both apps. You can then assign ShareRec.Command := 1; for example, and the other app can see it instantly. Be sure to UnmapMemory and CloseMemory when closing. Don't use pointer types such as dynamic Strings or classes as they will not work. Cheers, Ross. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jason Coley Sent: Wednesday, 9 May 2007 13:51 To: NZ Borland Developers Group - Delphi List Subject: RE: [DUG] Sending data between process on same computer on windows Do you have any samples on how to work this component, I can't find much on the net about it either, apart from download links. Jason I would use shared memory. I use this free component. http://www.torry.net/vcl/system/appscommunications/sharedmemory.zip It uses a memory mapped file system but without a physical file. It can use messages for triggering events at each end, but I actually use a variable in a record which I check in a 10ms loop to know when to do something. It works very well. Ross.
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