[fpc-pascal] Should Insert+Edit Fields+Insert again on a TDataSet work?
Hi, Please take a look at the following discussion on this bug report: http://www.freepascal.org/mantis/view.php?id=10165 The question is very simple. Suppose a trivial data-aware application with a DBNavigator and a number of DBEdits. The following steps: 1 - Click insert on the DBNavigator 2 - Add some text to the DBEdits 3 - Click insert again on the DBNavigator Now, what should happen? Should the first inserted record be persisted or lost? I don't know how to use any other database method on my TurboDelphi except ADO, and there this works. Does anyone know if this should actually work, or if this just works with ADO and shouldn't work with any other dataset? The question is relevant to fpc because some fpc datasets don't allow the 3 steps above and I already saw the data be inserted in the wrong order, or even simply lost. thanks, -- Felipe Monteiro de Carvalho ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Re: Should Insert+Edit Fields+Insert again on a TDataSet work?
Ok, so I managed to get a DBE application working and it has the same behavior as the ADO one. -- Felipe Monteiro de Carvalho ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Re: Should Insert+Edit Fields+Insert again on a TDataSet work?
Felipe Monteiro de Carvalho wrote: Ok, so I managed to get a DBE application working and it has the same behavior as the ADO one. I believe it should be posted (kept). In general, at least in Delphi - I think throughout the Borland world - if you navigate off a record you have inserted or edited, the edited record is posted. I think inserting another record is just another way of navigating off the edited record. cheers, John Sunderland ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] binstr for single type
Hello, I need a routine binstr(var val:single;,) since no such in the rtl
exists I decided to write one. Also I wanted to make reverse routine bin2float
where the input would be string containing 32 ones and zeroes. But I didn't
want to bother with extracting mantissa, exponent, shifting adding dropped
zero... One idea is to move entire singlenumber to the buffer (array of four
bytes) and then I have values of 4 bytes allready figured so I can convert them
to binary or in reverse convert 32 binary digits to 4 bytes and move them back
to single. This approach worked until I used this on single numbers without
floating part. But when I gave number with floating part it appended some
numbers after my number.
Following code snippet demonstrates the idea.
If someone could point me what I am doing wrong there I would be gratefull.
program testsingle;
var number:single;
buf:array[1..4] of byte;
i:byte;
begin
writeln('enter float number ');
readln(number);
writeln('you entered: ',number);
move(number,buf,sizeof(number));
writeln('memory dump - byte by byte from left to right :');
for i:=1 to 4 do write(buf[i],' ');
move(buf,number,sizeof(number));
writeln;
writeln('result ');
writeln(number:0:6);
end.
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Re: [fpc-pascal] Lazarus + Qt4 in FreeBSD
On Thursday 22 November 2007 04:50:59 pm [EMAIL PROTECTED] wrote: > Qt 4.3.1 is installed from ports and my Lazarus snapshot verion 0.9.25 of > 22-nov-2007... probably because the linker does not find libqt4intf.so. I have so bsd experience. Are you interested in creating a libqt4intf.so for bsd :-). ? if so start from the linux source code and compile script. kind regards, Den Jean ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] IPC/SHMGET and Multiple Variables
Hi I want to use IPC Shared Memory mecanism to enable communication between Linux processes. I followed doc example (http://community.freepascal.org:1/docs-html/rtl/ipc/shmctl) which works fine. However I'm unable to find how the handle multiple variables (or may be an array). Should I have to open as many shared segments as variables ? Or may be store all into my single segment but with a separator character ? What would you recommend ? Thanks ! Tom ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] HOW TO, PROBLEM read stdin (linux) ??
Dear What is the best way to read into a memory datas from this command. "/bin/myprogram end. -- David Touzeau -- Linux Ubuntu 7.04 feisty FreePascal-Lazarus,perl,delphi,php artica for postfix management console (http://www.artica.fr) icq:160018849 ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Re: Should Insert+Edit Fields+Insert again on a TDataSet work?
On 24/11/2007, Felipe Monteiro de Carvalho <[EMAIL PROTECTED]> wrote: > Ok, so I managed to get a DBE application working and it has the same > behavior as the ADO one. > >From my Delphi days, what I remember is that the data gets saved (posted) as soon as you move to another record. Using your example with the DBNavigator, doing another insert, moves to a new record, so the old record must be posted (saved). Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] HOW TO, PROBLEM read stdin (linux) ??
Great many thanks
Wanderlan Santos dos Anjos a écrit :
program yourprogram;
{$mode objfpc}{$H+}
uses
Classes, SysUtils;
var
st: text;
s: string;
begin
assign(st,'');
reset(st);
while not eof(st) do begin // --- iterate while not en of file
readln(st,s); //<<< read only a line
writeln(s);
end;
close(st); // <---
end.
--
Att,
Wanderlan Santos dos Anjos
On Nov 24, 2007 8:15 AM, TOUZEAU DAVID <[EMAIL PROTECTED]
> wrote:
Dear
What is the best way to read into a memory datas from this command.
"/bin/myprogram http://www.artica.fr) icq:160018849
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[fpc-pascal] How to send stdout pipe to a process ?
Dear I would like to send a TStringList.text to an external process (kind of stdout) i have an external process that require to receive datas from stdin like /home/process1 I would like my program to send datas inserted into a Tstringlist to this "process1" I think i should use "Output" but don't know how ? Do you think this should be answer ?? Is there a better way ? For i:=0 to List.Count-1 do begin writeln(output;list.Strings[i]); end; -- David Touzeau -- Linux Ubuntu 7.04 feisty FreePascal-Lazarus,perl,delphi,php artica for postfix management console (http://www.artica.fr) icq:160018849 ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Should Insert+Edit Fields+Insert again on a TDataSet work?
Am Samstag, den 24.11.2007, 09:44 +0100 schrieb Felipe Monteiro de Carvalho: > Hi, > > Please take a look at the following discussion on this bug report: > > http://www.freepascal.org/mantis/view.php?id=10165 > > The question is very simple. Suppose a trivial data-aware application > with a DBNavigator and a number of DBEdits. The following steps: > > 1 - Click insert on the DBNavigator > > 2 - Add some text to the DBEdits > > 3 - Click insert again on the DBNavigator > > Now, what should happen? Should the first inserted record be persisted or > lost? > > I don't know how to use any other database method on my TurboDelphi > except ADO, and there this works. > > Does anyone know if this should actually work, or if this just works > with ADO and shouldn't work with any other dataset? > > The question is relevant to fpc because some fpc datasets don't allow > the 3 steps above and I already saw the data be inserted in the wrong > order, or even simply lost. Most Database apps have the idea of an "insert row", that is a fresh new record created on the "new/insert"-event or when the user navigates after the last record from the underlying table. If this insert row record (only existing on the client side) is filled with at least some data and the user clicks "insert" again the insert row is posted to the table and emptied, so a second new record is prepared at the client (not posted yet). But it is only one at a time. HTH, Marc ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
