Re: [fpc-pascal] RxDBGrid and RxColumn
On Wed, 14 Jul 2021, Hassan Camacho Cadre via fpc-pascal wrote: Hello I am using lazarus v2.012 and rxnew 3.3.5.231. In a form I have placed a RxDBGrid component with a lookup column, I want to know if it is possible search on the values of this column as the user types, just like the TRxDBLookupCombo component does. Now when I run the project, position the cursor on the lookup column field and write some value nothing happens, and I would like to locate the values that contain the characters that the user types. I don't think the maintainer of the Rx components is on this list. Maybe the article here can help you get started: https://www.freepascal.org/~michael/articles/#grids Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] TProcess read buffer size
I have some code the basically does: while bytesRead > 0 do bytesRead := process.Output.Read(buffer^, kBufferSize); but bytesRead is only ever 512 per call to Read. Is this a system imposed limit or something that's part of TProcess? Setting kBufferSize to anything larger than 512 has no affect. Regards, Ryan Joseph ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] TProcess read buffer size
Op 2021-07-15 om 20:26 schreef Ryan Joseph via fpc-pascal: I have some code the basically does: while bytesRead > 0 do bytesRead := process.Output.Read(buffer^, kBufferSize); but bytesRead is only ever 512 per call to Read. Is this a system imposed limit or something that's part of TProcess? Setting kBufferSize to anything larger than 512 has no affect. Not of TProcess as far as I know, it probably depends on the OS pipe implementation and maybe the granularity that the processes that you run outputs data. (buffers its I/O iow calls write() in 512 byte increments ) ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] TProcess read buffer size
> On Jul 15, 2021, at 3:07 PM, Marco van de Voort via fpc-pascal > wrote: > > Not of TProcess as far as I know, it probably depends on the OS pipe > implementation and maybe the granularity that the processes that you run > outputs data. (buffers its I/O iow calls write() in 512 byte increments ) In this case the command is a PHP script that reads a file in 64k chunks and writes the text to stdout (in PHP fread returns 64k chunks as expected). TProcess looks like a pretty thin wrapper around pipes and common unix system calls so I don't know where the 512 limit could come from. How could I test this further? I think something is wrong but I don't know where to look. I'm on macOS btw. Regards, Ryan Joseph ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
