Nabble - Gambas

[SOLVED] Socket Horror!

2009-11-22T23:27:04Z

Some of you will know that I've had truckloads of socket horror with a proxy
server I've written in gambas. Well I had more socket horror just now.
Everything was working fine last night but not when I booted up this
afternoon.

The server socket starts and listens.
The server socket detects an incoming client connection.
The server socket is established and ready.
A connection to a remote server is established.

After some time, the client gets no response so the client closes the
connection.

The client reconnects.
The server socket starts and listens...

And round and round it went.

Socket_Read() never fired, and I know nothing changed because I was using
the proxy for several hours in runtime mode and it was running flawlessly,
then I went to bed without ever touching the source code.

It turns out that the remote server IP address had changed. It now makes
sense that Socket_Read() never fired because the client application must
wait for the server to respond, which is the correct behaviour specified by
a certain RFC, but since the server was no longer on the same IP address
there was no response; the server wasn't there, it was on some other IP
address.

I checked the server and it was on a very short lease, which explains why it
appeared to work and not work at no particular time. At one point everything
started working when I set a single property in the client socket. I now
believe that the two events (me setting the property, and the proxy starting
to work) were independent and mere coincidence was what caused it to work,
i.e. the server acquired a new lease and, it just so happens, it got the
same IP address that we expected it to have.

I have now given the server a permanent IP.

So there you have it. You now know how it is that a remote server not being
on the IP address that you expect it to be on can cause the client
Socket_Read() to never fire.

Thanks to all those who offered commonsense suggestions. I could have sorted
this problem much quicker if I had bothered to check the Status property of
the socket that connects to the remote server. But hey, it's not even in
alpha stage yet :)

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From forum: gambas-user

Re: Either I am blind or...

2009-11-22T22:59:14Z

Benoît Minisini wrote:

>> Benoît Minisini wrote:
>>>> Benoît Minisini wrote:
>>>>>> ...menus don't support drag.
>>>>>>
>>>>>> Please tell me I am blind.
>>>>>
>>>>> They don't, no toolkit supports drag & drop on menus natively.
>>>>
>>>> I'm looking to drag menu items off a menu, not drag them onto a
>>>> menu. The gnome panel menus do it.
>>>>
>>>> Pity. I'm rewriting a Windows app that makes use of that feature.
>>>> I'll have to think up an alternative.
>>>
>>> I remember that in KDE3 this was a global UI option. I don't know if
>>> it exists in KDE4.
>>>
>>> I will add a property to the Menu class to enable the TearOff
>>> handle. I will tell you when it is done.
>>>
>> :)
>>
>> That would be great, thank you.
>>
>
> Sorry, but I can't make it work correctly, both in gb.qt4 and gb.gtk.
>
> I will try again, but I'm afraid you will have to find a solution
> yourself...

That's ok. I'll devise some kind of UI for it.

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From forum: gambas-user

Re: Serial ports in Gambas

2009-11-22T21:22:10Z

Hello,

In the examples you find one for the serial port: Open Example \ Networking
\ SerialPort. It shows the basics.

You can send commands from your code (by taking them for example from a
textbox filled by the user) with PRINT or WRITE, you can read from the
serial port with READ.

Regards, Robi

2009/11/23 Kari Laine <klaine8@...>

> Hi,
>
> after not being active with Gambas for some time now. I am thinking of
> making a program with it.
>
> I am learning products from http://www.byvac.com especially the BV513,
> which is PIC-based microcontroller programmed in basic.
>
> The sofware from Byvac is for Windows only. I tried with minicom but
> it sends something weird to BV513 so it does not work. So my need is
> to write a simple terminal program. For that I need serial port
> support - is there that in Gambas? I looked at the examples and could
> not find any example.
>
> What control should I use as central control where user types commands
> and results which are received from the device are printed?
>
> Sorry for these stupid questions.
>
> Best Regards
> Kari Laine
>
>
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>

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From forum: gambas-user

Serial ports in Gambas

2009-11-22T19:50:24Z

Hi,

after not being active with Gambas for some time now. I am thinking of
making a program with it.

I am learning products from http://www.byvac.com especially the BV513,
which is PIC-based microcontroller programmed in basic.

The sofware from Byvac is for Windows only. I tried with minicom but
it sends something weird to BV513 so it does not work. So my need is
to write a simple terminal program. For that I need serial port
support - is there that in Gambas? I looked at the examples and could
not find any example.

What control should I use as central control where user types commands
and results which are received from the device are printed?

Sorry for these stupid questions.

Best Regards
Kari Laine

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From forum: gambas-user

[SPAM] Vacation reply

2009-11-22T18:35:39Z

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From forum: gambas-devel

Re: Empty string sets controls and collections members to null Question

2009-11-22T18:32:36Z

On Thursday 27 August 2009 19:55:01 you wrote:

I asked this before (text below) and to my recollection (maybe faulty) Benoit
said that the behaviour causing me problems was normal, however I really need
to find a solution.

In a nutshell again it is this:

I use collections to transfer data to-from my database to add/update records
(don't use the gambas datacontrol).

If an existing collection has a member containing text eg

MyCollection!my_value = "a dog", and I'm updating the record, lets say I've
deleted the text in the input field, and the value in the backend for that
field in a table now has to be an empty sting or null, if I do this:

MyCollectioni!my_value = "", effectively removes the 'my_value' key from the
collection, dosn't set its string to null.

I would have thought that "" = empty string, not null, but I think Benoit said
that this was equivalent in gambas. I can't think how to get around this and
wondered if anyone could think of a solution.

Regards

Richard

> This question is really around how to set a collection member to an empty
> string without destroying it.
>
>
> I've noticed (forever) that this code
>
> textbox1 = "" when one accidentally forgot to write
>
> textbox1.text ="", actually sets the control to null.
>
> But I've also I just noticed this:
>
>
> Lets say you have a collection
>
> dim aCollection as new collection
>
> aCollection!value = "hi there"
>
> is a valid statement
>
> aCollection.Remove("value") - removes the item
>
> aCollecton!value = "" actually works like aCollection.Remove("value")
>
> which is sort of inconvenient if you want the collection member to be an
> empty string
>
> Am I wrong ?any suggestions/observations.
>
> regards
>
> richard
>

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From forum: gambas-devel

Re: Either I am blind or...

2009-11-22T13:23:16Z

On Monday 23 November 2009 07:58:47 Benoît Minisini wrote:

> > Benoît Minisini wrote:
> > >> ...menus don't support drag.
> > >>
> > >> Please tell me I am blind.
> > >
> > > They don't, no toolkit supports drag & drop on menus natively.
> >
> > I'm looking to drag menu items off a menu, not drag them onto a menu. The
> > gnome panel menus do it.
> >
> > Pity. I'm rewriting a Windows app that makes use of that feature. I'll
> > have to think up an alternative.
>
> I remember that in KDE3 this was a global UI option. I don't know if it
> exists in KDE4.
>
> I will add a property to the Menu class to enable the TearOff handle. I
> will tell you when it is done.
>
> Regards,
>

Can you post to the list about this as I've a use for that as well.

Richard

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From forum: gambas-user

Re: Either I am blind or...

2009-11-22T13:18:01Z

> Benoît Minisini wrote:
> >> Benoît Minisini wrote:
> >>>> ...menus don't support drag.
> >>>>
> >>>> Please tell me I am blind.
> >>>
> >>> They don't, no toolkit supports drag & drop on menus natively.
> >>
> >> I'm looking to drag menu items off a menu, not drag them onto a
> >> menu. The gnome panel menus do it.
> >>
> >> Pity. I'm rewriting a Windows app that makes use of that feature.
> >> I'll have to think up an alternative.
> >
> > I remember that in KDE3 this was a global UI option. I don't know if
> > it exists in KDE4.
> >
> > I will add a property to the Menu class to enable the TearOff handle.
> > I will tell you when it is done.
> >
> :)
>
> That would be great, thank you.
>

Sorry, but I can't make it work correctly, both in gb.qt4 and gb.gtk.

I will try again, but I'm afraid you will have to find a solution yourself...

Regards,

--
Benoît Minisini

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From forum: gambas-user

Re: Either I am blind or...

2009-11-22T13:02:52Z

Benoît Minisini wrote:

>> Benoît Minisini wrote:
>>>> ...menus don't support drag.
>>>>
>>>> Please tell me I am blind.
>>>
>>> They don't, no toolkit supports drag & drop on menus natively.
>>
>> I'm looking to drag menu items off a menu, not drag them onto a
>> menu. The gnome panel menus do it.
>>
>> Pity. I'm rewriting a Windows app that makes use of that feature.
>> I'll have to think up an alternative.
>>
>
> I remember that in KDE3 this was a global UI option. I don't know if
> it exists in KDE4.
>
> I will add a property to the Menu class to enable the TearOff handle.
> I will tell you when it is done.

:)

That would be great, thank you.

> Regards,

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From forum: gambas-user

Re: Either I am blind or...

2009-11-22T12:58:47Z

> Benoît Minisini wrote:
> >> ...menus don't support drag.
> >>
> >> Please tell me I am blind.
> >
> > They don't, no toolkit supports drag & drop on menus natively.
>
> I'm looking to drag menu items off a menu, not drag them onto a menu. The
> gnome panel menus do it.
>
> Pity. I'm rewriting a Windows app that makes use of that feature. I'll have
> to think up an alternative.
>

I remember that in KDE3 this was a global UI option. I don't know if it exists
in KDE4.

I will add a property to the Menu class to enable the TearOff handle. I will
tell you when it is done.

Regards,

--
Benoît Minisini

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T12:46:31Z

Benoît Minisini wrote:

>> Toni wrote:
>>> Hi there,
>>>
>>> I think it's got to do with the order that events fire... In any
>>> case, if you use the event "GotFocus" of the TabStrip, it should
>>> work as you expect.
>>
>> Ok, that's far better than it was, many, many thanks. However after
>> moving the code into GotFocus the first row of the DataBrowser is
>> never highlighted.
>
> Yes, this is a known bug I never fixed...

NP. Charlie Reinl gave me a workaround.

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From forum: gambas-user

Re: Either I am blind or...

2009-11-22T12:30:35Z

Benoît Minisini wrote:
>> ...menus don't support drag.
>>
>> Please tell me I am blind.
>>
>
> They don't, no toolkit supports drag & drop on menus natively.

I'm looking to drag menu items off a menu, not drag them onto a menu. The
gnome panel menus do it.

Pity. I'm rewriting a Windows app that makes use of that feature. I'll have
to think up an alternative.

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T12:23:13Z

Charlie Reinl wrote:

> Am Sonntag, den 22.11.2009, 23:05 +1100 schrieb
> nospam.nospam.nospam@...:
>> Charlie Reinl wrote:
>>> Am Sonntag, den 22.11.2009, 22:06 +1100 schrieb
>>> nospam.nospam.nospam@...:
>>>> Toni wrote:
>>>>> Hi there,
>>>>>
>>>>> I think it's got to do with the order that events fire... In any
>>>>> case, if you use the event "GotFocus" of the TabStrip, it should
>>>>> work as you expect.
>>>>
>>>> Ok, that's far better than it was, many, many thanks. However after
>>>> moving the code into GotFocus the first row of the DataBrowser is
>>>> never highlighted. When the down arrow is pressed first on entering
>>>> the tab, the second row is highlighted, even though the first was
>>>> not highlighted. When the up arrow is pressed first on entering the
>>>> tab, the first row highlights.
>>>>
>>>> <squint>
>>>>
>>>> I see no methods available that will allow me to force the first
>>>> row to highlight :(
>>>>
>>>> I tried moving rows and refreshing the datasource. I still can't
>>>> get that first row to highlight.
>>>>
>>>> I could send fake keyboard events to fix it but that's hardly
>>>> kosher.
>>>
>>> Salut,
>>>
>>> in you example give DataBrowser1.GridView.Rows[0].Selected =
>>> TRUE a chance but inot in GotFocus, that raise when start the form.
>>> SET it in Tab_Click.
>>
>> Well, that highlighted the first row all right, but now the
>> DataBrowser will not accept keystrokes unless I click first, which
>> is the same problem I had originally except that the the first row
>> is now highlighted.
>
> Salut
>
> yes highlighted is not having the focus, so add just
> DataBrowser1.GridView.SetFocus
> that should do it.

And do it, it did. Thank you very much. Appreciated.

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From forum: gambas-user

Re: boring, and certainly not necessary!

2009-11-22T12:06:50Z

Am Sonntag, den 22.11.2009, 20:19 +0100 schrieb Benoît Minisini:

> > Salut,
> >
> > I remarked, if I delete the gambas3/Trunk, that I need to root,
> > because of two directories ".action" (see attachment) certainly created
> > during "make install".
> >
> > Is it possible to remove them before "make install" finishes?
> >
> > I ask because that's needs su/sudo more in my script if I want compile
> > from scratch.
> >
>
> The bug should be fixed in revision #2435. I forgot to set the owner of the
> .action directory to the same owner as the project directory.
>
> Can you try it and confirm ?
>
> Thanks in advance.
>
> Regards,
>

Salut Benoît,

when I started the second time my script with option "from scratch" I
had left the sudo in front of the rm, and had NO access problems.

So I confirm the changed owner at the .action directories.

--
Amicalement
Charlie

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From forum: gambas-devel

Re: boring, and certainly not necessary!

2009-11-22T11:19:48Z

> Salut,
>
> I remarked, if I delete the gambas3/Trunk, that I need to root,
> because of two directories ".action" (see attachment) certainly created
> during "make install".
>
> Is it possible to remove them before "make install" finishes?
>
> I ask because that's needs su/sudo more in my script if I want compile
> from scratch.
>

The bug should be fixed in revision #2435. I forgot to set the owner of the
.action directory to the same owner as the project directory.

Can you try it and confirm ?

Thanks in advance.

Regards,

--
Benoît Minisini

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From forum: gambas-devel

Re: LGPL COPYING file?

2009-11-22T11:10:51Z

> The changelog for 2.18.0 says:
>
> GB.NET.SMTP
>
> * BUG: Add the GNU LGPL 2.1 license file.
>
> Except that the COPYING file in gb.net.smtp/ is still GPL, not LGPL, nor
> is COPYING.LIB present...
>
> ~spot
>

I didn't realize on the moment that the COPYING file is the license! I fixed
it in revision #2432 and #2433.

Regards,

--
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From forum: gambas-devel

Re: Problem with MoveScale saved into .form files on gambas2

2009-11-22T10:20:20Z

> El día 10 de noviembre de 2009 20:02, Alonso Cárdenas Márquez
>
> <acardenas@...> escribió:
> > 2009/11/2 Benoît Minisini <gambas@...>:
> >> The Round() function is defined in the subr_math.c source file in the
> >> /main/gbx directory.
> >>
> >> Here is the code, with comments added:
> >>
> >> void SUBR_round(void)
> >> {
> >> // 'val' is the value of the Round second argument, 0 by default.
> >>
> >> int val = 0;
> >> double power;
> >>
> >> // Starts the subroutine. Actually just initializes a variable named
> >> // 'NPARAM' with the number of arguments passed to the subroutine, and
> >> a // variable named 'PARAM', that points at the first argument on the //
> >> interpreter stack.
> >>
> >> SUBR_ENTER();
> >>
> >> // NPARAM is either 1 or 2 (this is checked by the compiler). If there
> >> is 2 // arguments, extract it from the stack and put it in the 'val'
> >> variable.
> >>
> >> if (NPARAM == 2)
> >> val = SUBR_get_integer(&PARAM[1]);
> >>
> >> // Put 10^'val' inside the power variable. According to your test, the
> >> value // returned by Round() is 1/10th the true value. So the value of
> >> 'power' // should be checked with a debugger.
> >>
> >> power = pow(10, val);
> >>
> >> // Converts the first argument of Round() to a floating point value.
> >>
> >> VALUE_conv(&PARAM[0], T_FLOAT);
> >>
> >> // Defines the return value
> >>
> >> RETURN->type = T_FLOAT;
> >>
> >> // Do not use rint(), it does not do what I need.
> >>
> >> /*RETURN->_float.value = rint(PARAM->_float.value / power) * power;*/
> >>
> >> // The floor() function returns the largest integer value less than
> >> // or equal to its argument. By adding 0.5 first, we are actually
> >> rounded // the value to the nearest integer.
> >>
> >> // The following keeps the number of digits after the decimal point
> >> defined // by the 'val' variable.
> >>
> >> RETURN->_float.value = floor(PARAM->_float.value / power + 0.5) *
> >> power;
> >>
> >> // Exit the subroutine by removing the arguments from the interpreter
> >> stack.
> >>
> >> SUBR_LEAVE();
> >> }
> >>
> >> If you are able to trace the subr_round() function with a debugger, and
> >> see what really happens, you are welcome!
> >>
> >> Regards,
> >>
> >> --
> >> Benoît Minisini
> >
> > Hi :)
> >
> > I was doing some tests with Round function. I saw that current
> > subr_round() function is calculating the value correctly. The problem
> > is when you assign the value to
> >
> > RETURN->_float.value = floor(PARAM->_float.value / power + 0.5) * power;
> >
> > For example, If you print the same value assigned to a double variable
> >
> > double temp;
> >
> > temp = floor(PARAM->_float.value / power + 0.5) * power;
> >
> > printf("Value: %f", temp);
> >
> > This will show the right value.
> >
> > In another case, I assigned a value of 492,857 to RETURN->_float.value
> > on SUBR_round function (I assigned the value directly into
> > gbx_subr_math.c file). I compiled gbx2 and I called Round function
> > after and I saw that it is showing me the value of 4,92.
> >
> > Maybe it could give you an idea about where I could search for fix the
> > problem.
> >
> > Greetings
> > ACM
>
> Any news about that?
>
> Greetings
> ACM
>

Not really. But it seems something really weird : RETURN->_float.value is
already a "double", so how setting something in it can change the value?

What architecture do you use exactly?

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From forum: gambas-devel

Re: Setting a checkbox value

2009-11-22T07:59:36Z

> Benoît Minisini ha scritto:
> >>> bbb888 ha scritto:
> >>>> Benoit,
> >>>>
> >>>> Why oh why should setting checkbox value in code generate a click
> >>>> event?
> >>>>
> >>>> bruce
> >>>
> >>> I join.
> >>> I think that events should be fired by user, never by code.
> >>>
> >>> Regards,
> >>
> >> Why should we make a difference between the user and the code? Most of
> >> the time it is useless, so when you need that, just block events
> >> explicitely.
> >>
> >> Regards,
> >
> > To give more details about my point of view...
> >
> > 1) You cannot know that an event comes "from the user" in every case.
>
> Unless you know that events *always* come from user - I am speaking of
> "click", "change" and so on, not "data" event or "icon".

It does not matter if *you* know that an event comes from the user. The
toolkit just receives events from X-Window : it cannot know if this event
comes directly from an input device (i.e. from the user) or if it is a
consequence of running code previously. Of course, *some* events do not come
from X-Window, but are internally managed by the toolkit. But no toolkit
behave the same, and so you cannot be sure that a X-Window event comes "from
the user", and so there is no way to know that for Gambas events too.

>
> > 2) This time, I agree with nospam x 3 :-). If events coming from the user
> > do not raise events, how could you catch them when needed? After many
> > years of GUI programming, I find my way the better one.
>
> Events coming from the user *should always* raise events.

Sorry, I forgot a "not" before "coming".

>
> > 3) It is more consistent to always raise events, as do the underlying
> > toolkits used by Gambas, than sometimes raising them, especially when you
> > can't be sure that an event comes from the user or not.
>
> When needed: you don't raise an event - you call the event handler
> directly (which is different, and impossible in gambas).
>
> There is a subtle distinction between events, hooks and methods. A
> button lies on a form awaiting for an event (a user click). When the
> click arrives, the button executes a method which repaints it depressed,
> and calls a hook to let the main program do something useful. The
> confusion arrives when event, hook and method are not separated.
> Intercepting the event, we make the button insensitive, because it never
> sees a user clicked on it. Intercepting the hook we can launch our
> handler, to make our program do useful things. Lastly, we can call the
> button method to repaint it depressed. By having these three elements
> (event, hook and method) separated, we have all the control on the
> button - think that a button is a really simple gadget. It would be ok
> to have event-hook-method connected by default. If we want to simplify
> this scheme, forcibly we have to loose some functionality.
>
> Note that in other cases, such as the Data event or Icon event, they
> should not be events - they should be hooks. Events are asynchronous and
> queueable, while hooks are not. Characters arriving from a serial port
> are events (asynchronous) and, if the program does not handle them fast
> enough, they should be stacked or queued. In fact, serial ports always
> have a buffer. Icon event is not an event: who raises those events
> (treeview or fileview) can not stack them - it waits until the main
> program handles them (a hook). And, in fact, they do not have a buffer.
>
> Now, it is nice to simplify GUI programming by eliminating three things
> and have only one: most of the time it is ok; but this doesn't mean
> event and hooks are the same...

I agree that I merged hooks and event handler in Gambas. For simplicity, and
because Gambas events are not queued. Unless of course if the toolkit does
that, but the interpreter has no control on that. And for delayed events, but
this is an exception mainly used for having event sbehave the same in gb.qt
and in gb.gtk.

Regards,

--
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From forum: gambas-user

Re: Setting a checkbox value

2009-11-22T07:42:37Z

Benoît Minisini ha scritto:

>>> bbb888 ha scritto:
>>>
>>>> Benoit,
>>>>
>>>> Why oh why should setting checkbox value in code generate a click
>>>> event?
>>>>
>>>> bruce
>>>>
>>> I join.
>>> I think that events should be fired by user, never by code.
>>>
>>> Regards,
>>>
>> Why should we make a difference between the user and the code? Most of the
>> time it is useless, so when you need that, just block events explicitely.
>>
>> Regards,
>>
>>
>
> To give more details about my point of view...
>
> 1) You cannot know that an event comes "from the user" in every case.
>

Unless you know that events *always* come from user - I am speaking of
"click", "change" and so on, not "data" event or "icon".
> 2) This time, I agree with nospam x 3 :-). If events coming from the user do
> not raise events, how could you catch them when needed? After many years of
> GUI programming, I find my way the better one.
>
Events coming from the user *should always* raise events.
> 3) It is more consistent to always raise events, as do the underlying toolkits
> used by Gambas, than sometimes raising them, especially when you can't be sure
> that an event comes from the user or not.
>
When needed: you don't raise an event - you call the event handler
directly (which is different, and impossible in gambas).

There is a subtle distinction between events, hooks and methods. A
button lies on a form awaiting for an event (a user click). When the
click arrives, the button executes a method which repaints it depressed,
and calls a hook to let the main program do something useful. The
confusion arrives when event, hook and method are not separated.
Intercepting the event, we make the button insensitive, because it never
sees a user clicked on it. Intercepting the hook we can launch our
handler, to make our program do useful things. Lastly, we can call the
button method to repaint it depressed. By having these three elements
(event, hook and method) separated, we have all the control on the
button - think that a button is a really simple gadget. It would be ok
to have event-hook-method connected by default. If we want to simplify
this scheme, forcibly we have to loose some functionality.

Note that in other cases, such as the Data event or Icon event, they
should not be events - they should be hooks. Events are asynchronous and
queueable, while hooks are not. Characters arriving from a serial port
are events (asynchronous) and, if the program does not handle them fast
enough, they should be stacked or queued. In fact, serial ports always
have a buffer. Icon event is not an event: who raises those events
(treeview or fileview) can not stack them - it waits until the main
program handles them (a hook). And, in fact, they do not have a buffer.

Now, it is nice to simplify GUI programming by eliminating three things
and have only one: most of the time it is ok; but this doesn't mean
event and hooks are the same...

Regards,

--
Doriano Blengino

"Listen twice before you speak.
This is why we have two ears, but only one mouth."

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From forum: gambas-user

Re: Setting a checkbox value

2009-11-22T06:30:15Z

> nospam.nospam.nospam wrote:
> > You'd be saying exactly the opposite if gambas was badly designed and
> > didn't
> > generate the event on a coded change when you needed it to. You would
> > have no way in hell of easily detecting it, not ever. Besides that,
> > firing events
> > for code-set attributes is normal practice in a GUI. All you need do is
> > set
> > a flag and test it in the event code.
>
> Using that theory one should expect that changing a forms Title should fire
> the Activate event or changing a textbox's content should fire the Change
> event. I think not.
>
> What I do in code in entirely my responsibility. IMHO that includes
> raising events when I desire, not killing off events when I don't desire
> them.
>

No, because you break the control encapsulation then. Events are "owned" by
the control, not by the code using it. Only him decideds when he raises its
events.

> I found your reply of no value and would ask that you please ignore any
> post from myself in the future.

nospam x 3 is always a bit rude. I told him that it is useless to do that on a
mailing-list, but apparently he does not see why. Please don't enter the game
of who has the biggest ones. :-) Or do that privately!

Regards,

--
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From forum: gambas-user

Re: Setting a checkbox value

2009-11-22T06:26:17Z

> > bbb888 ha scritto:
> > > Benoit,
> > >
> > > Why oh why should setting checkbox value in code generate a click
> > > event?
> > >
> > > bruce
> >
> > I join.
> > I think that events should be fired by user, never by code.
> >
> > Regards,
>
> Why should we make a difference between the user and the code? Most of the
> time it is useless, so when you need that, just block events explicitely.
>
> Regards,
>

To give more details about my point of view...

1) You cannot know that an event comes "from the user" in every case.

2) This time, I agree with nospam x 3 :-). If events coming from the user do
not raise events, how could you catch them when needed? After many years of
GUI programming, I find my way the better one.

3) It is more consistent to always raise events, as do the underlying toolkits
used by Gambas, than sometimes raising them, especially when you can't be sure
that an event comes from the user or not.

Regards,

--
Benoît Minisini

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From forum: gambas-user

Re: Either I am blind or...

2009-11-22T06:18:28Z

> ...menus don't support drag.
>
> Please tell me I am blind.
>

They don't, no toolkit supports drag & drop on menus natively.

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T06:17:13Z

Yes, this is a known bug I never fixed...

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T04:41:39Z

Am Sonntag, den 22.11.2009, 23:05 +1100 schrieb
nospam.nospam.nospam@...:

> Charlie Reinl wrote:
> > Am Sonntag, den 22.11.2009, 22:06 +1100 schrieb
> > nospam.nospam.nospam@...:
> >> Toni wrote:
> >>> Hi there,
> >>>
> >>> I think it's got to do with the order that events fire... In any
> >>> case, if you use the event "GotFocus" of the TabStrip, it should
> >>> work as you expect.
> >>
> >> Ok, that's far better than it was, many, many thanks. However after
> >> moving the code into GotFocus the first row of the DataBrowser is
> >> never highlighted. When the down arrow is pressed first on entering
> >> the tab, the second row is highlighted, even though the first was
> >> not highlighted. When the up arrow is pressed first on entering the
> >> tab, the first row highlights.
> >>
> >> <squint>
> >>
> >> I see no methods available that will allow me to force the first row
> >> to highlight :(
> >>
> >> I tried moving rows and refreshing the datasource. I still can't get
> >> that first row to highlight.
> >>
> >> I could send fake keyboard events to fix it but that's hardly kosher.
> >
> > Salut,
> >
> > in you example give DataBrowser1.GridView.Rows[0].Selected = TRUE
> > a chance but inot in GotFocus, that raise when start the form.
> > SET it in Tab_Click.
>
> Well, that highlighted the first row all right, but now the DataBrowser will
> not accept keystrokes unless I click first, which is the same problem I had
> originally except that the the first row is now highlighted.

Salut

yes highlighted is not having the focus, so add just
DataBrowser1.GridView.SetFocus
that should do it.

--
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Charlie

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From forum: gambas-user

Re: file.save saves in DOS format

2009-11-22T04:25:23Z

Joshua Higgins wrote:
> Thanks for the info. My program generates the /etc/exports file from
> a list of IP addresses and allowed shares. For some reason, when I'm
> using File.Save to save the contents of a TextArea to /etc/exports,
> it is putting the two end of line characters like the DOS format,
> instead of one, so the NFS server cannot read the configuration file.

So just Replace(TextArea1.Text, "\r\n", "\n")

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From forum: gambas-user

Re: file.save saves in DOS format

2009-11-22T04:10:36Z

Thanks for the info. My program generates the /etc/exports file from a list
of IP addresses and allowed shares. For some reason, when I'm using
File.Save to save the contents of a TextArea to /etc/exports, it is putting
the two end of line characters like the DOS format, instead of one, so the
NFS server cannot read the configuration file.

--
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>>>>>>------
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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T04:05:19Z

Charlie Reinl wrote:

> Am Sonntag, den 22.11.2009, 22:06 +1100 schrieb
> nospam.nospam.nospam@...:
>> Toni wrote:
>>> Hi there,
>>>
>>> I think it's got to do with the order that events fire... In any
>>> case, if you use the event "GotFocus" of the TabStrip, it should
>>> work as you expect.
>>
>> Ok, that's far better than it was, many, many thanks. However after
>> moving the code into GotFocus the first row of the DataBrowser is
>> never highlighted. When the down arrow is pressed first on entering
>> the tab, the second row is highlighted, even though the first was
>> not highlighted. When the up arrow is pressed first on entering the
>> tab, the first row highlights.
>>
>> <squint>
>>
>> I see no methods available that will allow me to force the first row
>> to highlight :(
>>
>> I tried moving rows and refreshing the datasource. I still can't get
>> that first row to highlight.
>>
>> I could send fake keyboard events to fix it but that's hardly kosher.
>
> Salut,
>
> in you example give DataBrowser1.GridView.Rows[0].Selected = TRUE
> a chance but inot in GotFocus, that raise when start the form.
> SET it in Tab_Click.

Well, that highlighted the first row all right, but now the DataBrowser will
not accept keystrokes unless I click first, which is the same problem I had
originally except that the the first row is now highlighted.

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T03:53:49Z

Am Sonntag, den 22.11.2009, 22:06 +1100 schrieb
nospam.nospam.nospam@...:

> Toni wrote:
> > Hi there,
> >
> > I think it's got to do with the order that events fire... In any case,
> > if you use the event "GotFocus" of the TabStrip, it should work as you
> > expect.
>
> Ok, that's far better than it was, many, many thanks. However after moving
> the code into GotFocus the first row of the DataBrowser is never
> highlighted. When the down arrow is pressed first on entering the tab, the
> second row is highlighted, even though the first was not highlighted. When
> the up arrow is pressed first on entering the tab, the first row highlights.
>
> <squint>
>
> I see no methods available that will allow me to force the first row to
> highlight :(
>
> I tried moving rows and refreshing the datasource. I still can't get that
> first row to highlight.
>
> I could send fake keyboard events to fix it but that's hardly kosher.

Salut,

in you example give DataBrowser1.GridView.Rows[0].Selected = TRUE a
chance but inot in GotFocus, that raise when start the form.
SET it in Tab_Click.
--
Amicalement
Charlie

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T03:06:36Z

Toni wrote:
> Hi there,
>
> I think it's got to do with the order that events fire... In any case,
> if you use the event "GotFocus" of the TabStrip, it should work as you
> expect.

Ok, that's far better than it was, many, many thanks. However after moving
the code into GotFocus the first row of the DataBrowser is never
highlighted. When the down arrow is pressed first on entering the tab, the
second row is highlighted, even though the first was not highlighted. When
the up arrow is pressed first on entering the tab, the first row highlights.

<squint>

I see no methods available that will allow me to force the first row to
highlight :(

I tried moving rows and refreshing the datasource. I still can't get that
first row to highlight.

I could send fake keyboard events to fix it but that's hardly kosher.

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From forum: gambas-user

Re: Setting a checkbox value

2009-11-22T02:26:29Z

nospam.nospam.nospam@... ha scritto:

> Doriano Blengino wrote:
>
>> bbb888 ha scritto:
>>
>>> Benoit,
>>>
>>> Why oh why should setting checkbox value in code generate a click
>>> event?
>>>
>>>
>> I join.
>> I think that events should be fired by user, never by code.
>>
>
> You'd be saying exactly the opposite if gambas was badly designed and didn't
> generate the event on a coded change when you needed it to. You would have
> no way in hell of easily detecting it, not ever. Besides that, firing events
> for code-set attributes is normal practice in a GUI. All you need do is set
> a flag and test it in the event code.
>

No. How can you say I would say the opposite? Are you a magician?
Probably you think I am counter-gambas in every situation, but this is
not true. Anyway, who cares. I give you permission of thinking and
saying whatever you want about me. Your words will speak for yourself.

Automatic firing of events could be a matter of taste - ok. Without it,
you can set a property and, if you want, call the relevant event
handler. With automatic firing, you must declare a global variable, set
it before setting the property, reset it just after, and modify the
event handler to check for the global variable. Again, the microsoft
way: to complicate simple things.

To Fabien, which wrote:
> but in this case it will work
>
> Object.lock(checkbox)
> Checkbox.value=true
> Object.Unlock(checkbox)
>
> so then the events are fired ... it is just blocked during the variable setting
>
You say so, and you are 99% right, because "Checkbox.value" is a single
and fast instruction. But I still think that there is a probability of
1% that the user clicks on the checkbox exactly in that moment, and user
clicks should never be ignored. This 1% raises to 100% in my
filemanager. I would like to know an explanation from Benoit: why, at a
certain point of gambas developing, he needed to invent an object.lock()
and object.unlock()? I think because GTK and probably QT do this stupid
thing of automatically firing events. If you want to prevent the user to
click a button, for example, you disable it - the botton goes gray and
the user is notified of that. I don't see a reason to have lock and
unlock, apart from that quirk of GTK and QT.

In Delphi under windows there is a mix of things. Some widgets
(checkboxes for example) raise an event when modified by code. Others
(trackbars, for example) do not. My thought about this is a mix of
things too: I do respect Borland and I hate microsoft, so I can not know
where this inconsistency rises up - probably from win32, and Borland
simply reflected it. But I am sure that, using trackbars which don't
raise events, if I need them I add a "tbSpeed.Change(NIL)": 6 keystrokes
and no worries. With checkboxes and perhaps others, if I don't want
automatic events, I have to modify the code in at least three points,
and this is frustrating.

Regards (especially to Nospam -:),

--
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"Listen twice before you speak.
This is why we have two ears, but only one mouth."

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From forum: gambas-user

Re: SetFocus on DataBrowser

2009-11-22T02:24:09Z

Hi there,

I think it's got to do with the order that events fire... In any case,
if you use the event "GotFocus" of the TabStrip, it should work as you
expect.

Regards,
Toni

En/na nospam.nospam.nospam@... ha escrit:

> Okie dokey, this one is giving me so much heartburn that even rude
> suggestions are welcome.
>
> There is a form with a tab control (tsMain) that has a number of tabs.
>
> There is code in tsMain_Click that sets the focus to the default
> control on the tab that was selected.
>
> If the default control is, say, a ComboBox, the ComboBox will
> immediately accept keystrokes such as up and down arrow, which is
> correct.
>
> If the default control is a DataBrowser, the DataBrowser will not
> accept keystrokes. It must be clicked before it will accept keystrokes.
>
> How do I get the the DataBrowser to accept keystrokes so that user
> does not have to click the control first?
>
> An example replicating the behaviour is attached. The database will
> need to be copied into /tmp/.
>
>
>
>
>
>
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
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From forum: gambas-user

SetFocus on DataBrowser

2009-11-22T02:11:48Z

Okie dokey, this one is giving me so much heartburn that even rude
suggestions are welcome.

There is a form with a tab control (tsMain) that has a number of tabs.

There is code in tsMain_Click that sets the focus to the default control on
the tab that was selected.

If the default control is, say, a ComboBox, the ComboBox will immediately
accept keystrokes such as up and down arrow, which is correct.

If the default control is a DataBrowser, the DataBrowser will not accept
keystrokes. It must be clicked before it will accept keystrokes.

How do I get the the DataBrowser to accept keystrokes so that user does not
have to click the control first?

An example replicating the behaviour is attached. The database will need to
be copied into /tmp/.

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FocusTrouble.tar.gz (13K) Download Attachment

From forum: gambas-user

Re: Split

2009-11-22T02:10:40Z

Am Sonntag, den 22.11.2009, 01:03 -0800 schrieb yuhej:

> Hello,
>
> The Split function baheves strange for me.
> I receive data fon an equipment throu RS232 and I need to extract the
> information from a string.
>
> The data groups are separated by 4 chr(10) character (originally it was 2
> CrLf but when reading in Gambas it became 4 chr(10) - this is also strange).
>
> So I take the string and I use Split(myString, chr(10) & chr(10) & chr(10) &
> chr(10)).
> The result is the same what as I use Split(myString, chr(10)), so the first
> character only:
> 0. item is one data
> 1,2,3. item empty
> 4. item data
> 5, 6, 7. empty
> etc.
>
> To solve the problem I used Replace function to replace the 4 chr(10) with
> only one character and the Split function on the redefined string - so
> finally my code works.
>
> Please let me know if this is a bug, a normal behaviour or I have made a
> mistake when using the Split function.
>
> Regards, Robi

Salut Robi,

file:///usr/local/share/gambas2/help/help/lang/split.html

says :
Split ( String AS String [ , Separators AS String , Escape AS String ,
IgnoreVoids AS Boolean ] )

hope that gambas3 does also.

I think your received data are ending sometimes with a ','
so Split entered an empty Item.

--
Amicalement
Charlie

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From forum: gambas-user

Re: Wizard source code

2009-11-22T01:42:43Z

Am Sonntag, den 22.11.2009, 09:59 +1100 schrieb richard terry:
> Hi List,
>
> I wondered if the wizard was a gambas component or qt, if gambas is it
> possible to access the source code?
>
> Regards
>
> Richard
>
Salut Richard,

if you have the package from http://gambas.sourceforge.net/ or by svn
then you will find it here:

<dir where the package is unpacked>/app/src/

or for components

<dir where the package is unpacked>/comp/src/

You find a wizard <dir where the package is unpacked>/comp/src/gb.form
--
Amicalement
Charlie

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From forum: gambas-user

Split

2009-11-22T01:03:48Z

Hello,

The Split function baheves strange for me.
I receive data fon an equipment throu RS232 and I need to extract the information from a string.

The data groups are separated by 4 chr(10) character (originally it was 2 CrLf but when reading in Gambas it became 4 chr(10) - this is also strange).

So I take the string and I use Split(myString, chr(10) & chr(10) & chr(10) & chr(10)).
The result is the same what as I use Split(myString, chr(10)), so the first character only:
0. item is one data
1,2,3. item empty
4. item data
5, 6, 7. empty
etc.

To solve the problem I used Replace function to replace the 4 chr(10) with only one character and the Split function on the redefined string - so finally my code works.

Please let me know if this is a bug, a normal behaviour or I have made a mistake when using the Split function.

Regards, Robi

From forum: gambas-user