C / C++ / MFC

17-Dec-01 23:06

Hi,

I want to develop for the Palm OS ( I have a Palm Vx), I read there is a DLL or whatever that allows you to write your code in Visual C++, is that true ?

How can I get something free and good to program the Palm ?

Thanks, Bye !
Braulio

Nish Nishant17-Dec-01 23:46

17-Dec-01 23:46

download the Palm SDK and an emulator

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Braulio Dez18-Dec-01 0:27

18-Dec-01 0:27

Thanks,

And one question more..., how hard is it to get results ?, Or can be done simple applications ? ( is so hard as Windows raw C programming ?)

Bye !
Braulio

Nish Nishant18-Dec-01 0:33

18-Dec-01 0:33

Here are some snippets from a talk I once gave on Palm OS coding :-

If you gimme your email address I'll send you the entire presentation.... the snippets below represent only about 33% of the presentation.

The PilotMain Function

The PilotMain() acts as the entry point for the application. It is analogous to main() in DOS programs or WinMain() in Windows applications. PilotMain() can check for launch codes which are passed as arguments. It is responsible for starting two important functions, StartApplication() and EventLoop().

The StartApplication() Function

This function is responsible for initializing the required data structures. It also initializes the program’s initial user interface by activating the initial form. Then it calls the EventLoop() function

The EventLoop() Function

The EventLoop function processes events going though these steps:

• EvtGetEvent retrieves the next available event from the
system event queue and passes it to a succession of event
handlers for processing.

• Each handler can choose (by returning a non-zero value) to handle an event, so that it’s not seen or processed by subsequent event handlers.

The EventLoop function processes all the events that flow through the application as it executes. EventLoop returns when an event is encountered that directs the application to quit. When control returns to PilotMain from EventLoop, the application quits, returning an error code of zero.

The SysHandleEvent Function
EventLoop gives the SysHandleEvent function the first opportunity to process each event. This function processes low-level events, like low-battery conditions, application launch, power keys, and Graffiti ® writing recognition.

Writing your first program
1. Create your form using Constructor for Palm OS
2. Add a button to your form
3. Save the resource file
4. Write the C program
5. Create the project using Code Warrior
6. Add the C program and the resource
7. Build it
8. Test it on the emulator

The Code
#include <pilot.h>
#include "MemoPadRsc.h"
static void StartApplication(void);
static Boolean MainFormHandleEvent(EventPtr event);
static void EventLoop(void);

static void StartApplication(void)
{
FormPtr frm;
frm = FrmInitForm(MemoPadMainForm);
FrmSetActiveForm(frm);
FrmDrawForm(frm);
}

static Boolean MainFormHandleEvent(EventPtr event)
{
Boolean handled = false;
EventType newEvent;

if (event->eType == ctlSelectEvent)
{
MemSet(&newEvent, sizeof(EventType), 0);
newEvent.eType = appStopEvent;
EvtAddEventToQueue(&newEvent);
handled = true;
}
return(handled);
}

static void EventLoop(void)
{
EventType event;
do
{
EvtGetEvent(&event, evtWaitForever);
if (! SysHandleEvent (&event))
if (! MainFormHandleEvent(&event))
FrmHandleEvent(FrmGetActiveForm(), &event);
}
while (event.eType != appStopEvent);
}

DWord PilotMain(Word cmd, Ptr cmdPBP, Word launchFlags)
{
if (cmd == sysAppLaunchCmdNormalLaunch)
{
StartApplication();
EventLoop();
}
return(0);
}

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Braulio Dez18-Dec-01 0:40

18-Dec-01 0:40

Thanks !

My e-mail address is: bdiez@holtegroup.com

Bye !
Braulio

Braulio Dez18-Dec-01 2:49

18-Dec-01 2:49

Hi Nish !,

Yes I would like to get the full palm article ( I want to try somethings), my e-mail adress is: bdiez@holtegroup.com

But then the palm thing does not have any standard control isn´t it ? ( b.g. TreeCtrl)

Thanks, Bye !
Braulio

Nish Nishant18-Dec-01 16:05

18-Dec-01 16:05

Okay, I have emailed it. I hope you do find it useful as an introduction. good luck!!!

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

markkuk17-Dec-01 23:48

markkuk

17-Dec-01 23:48

Braulio Díez wrote:
How can I get something free and good to program the Palm ?

See here for a free, GCC based tool chain for programming the Palm.

Braulio Dez18-Dec-01 0:27

Re: odbc drivers under XP

18-Dec-01 0:27

Thanks,

And one question more..., how hard is it to get results ?, Or can be done simple applications ? ( is so hard as Windows raw C programming ?)

Bye !
Braulio

odbc drivers under XP

17-Dec-01 22:17

where can i find odbc drivers for XP?

Michael P Butler18-Dec-01 3:33

Michael P Butler

18-Dec-01 3:33

I was under the impression that XP came with ODBC drivers. Are you looking for one driver in particular? Try downloading the latest MDAC from http://www.microsoft.com/data/

Michael Smile | :)

sql query question

17-Dec-01 21:23

Hi,

i have a database with tables person,position and player.

Person Table Definition:
person_id -> unique id of the person
person_first_name -> person first name
person.person_last_name -> person last name

For instance:
1,John,Scotch
2,Paul,Whisky

Position Table Definition:
position_id -> unique position id
position_short -> short description of the position
position_long -> description of the position

For instance:
1,QB,Quarterback
2,WR,Wide Receiver
3,TE,Tight End
4,DE,Defensive End
5,DT,Defensive Tackle
6,CB,Cornerback

Player Table Definition:
player_id -> unique player id
player_person_id -> foreign key pointing to Person table
player_offense_position_id -> foreign key pointing to Position table
player_defense_position_id-> foreign key pointing to Position table

For instance:
1,1,3,4
2,2,2,6

Now i want to display the info like this:

Name Last Name Off Posit. Def Posit.
John Scotch Tight End Defensive End
Paul Whisky Wide Receiver Cornerback

My query succeeds when i only use both id's for the
position instead of the descriptive form:
select person.person_first_name, person.person_last_name,
player.player_offense_position_id,
player.player_defense_position_id
from person, player
where
player.player_person_id = person.person_id

It also works when i change 1 of the id's to the long description:
select person.person_first_name, person.person_last_name,
position.position_long,
player.player_defense_position_id
from person, player, position
where
player.player_person_id = person.person_id
and player.player_offense_position_id = position.position_id

But then only the foreign key of the offensive position is resolved.

When i try to have both offense and defensive id's as descriptions,
like this, it doesn't work:
select person.person_first_name, person.person_last_name,
position.position_long,
position.position_long,
from person, player, position
where
player.player_person_id = person.person_id
and player.player_offense_position_id = position.position_id
and player.player_defense_position_id = position.position_id

How can i replace both the offensive position id and the defensive
position id with their respective entries from the position table?
(i.e. resolve the foreign key and use the long description)

Also, is there a reference to the SQL syntax anywhere?

As you can see, i'm rusty on the sql part

BK

Re: sql query question

markkuk17-Dec-01 22:20

markkuk

17-Dec-01 22:20

You need to use table aliases in your query if you have multiple foreign keys pointing to different rows of one table, try:

SELECT
    person.person_first_name,
    person.person_last_name,
    pos1.position_long,
    pos2.position_long
FROM
    person,
    player,
    position pos1,
    position pos2
WHERE
    player.player_person_id = person.person_id
    AND player.player_offense_position_id = pos1.position_id
    AND player.player_defense_position_id = pos2.position_id

Re: sql query question

18-Dec-01 0:16

YES! it worked. thanks a million. been looking through some old sql courses that i had lying around but i didn't succeed in finding the sollution!
thanks again!!!
Smile | :)

I guess this is impossible!

Rickard Andersson²⁰17-Dec-01 21:07

Rickard Andersson²⁰

17-Dec-01 21:07

And I guess that you think now why I want to do this! Smile | :)

But don't ask! Big Grin | :-D

I want to get the window of a button or any control in another application.

I know how to get the windows window:
HWND theWnd = ::FindWindow(classname, ortitlename);
But then I want to get the window handle of a button that is in window theWnd.

Hope you understand!
And I tell ya again, please don't ask me WHY! Smile | :)

------------------------------

Joaquín M López Muñoz17-Dec-01 21:30

Joaquín M López Muñoz

17-Dec-01 21:30

If you have the ID for the control (very easy to know using Spy++, that comes as an utility in Visual Studio), ::GetDlgItem(theWnd,id) returns a handle to the button you're interested in.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

PS: And if you want to programmatically press the button, here's how:

::SendMessage(hwndDlg,WM_NEXTDLGCTL,(WPARAM)hwndButton,(LPARAM)TRUE);
::SendMessage(hwndButton,BM_CLICK,0,0);

Braulio Dez17-Dec-01 23:08

17-Dec-01 23:08

Hombreeee !!!

Gente de España !!!, aquí uno de Málaga !!! ( Braulio), Un saludo
Braulio

Braulio Díez Botella
Holte Innovation Málaga

Nish Nishant17-Dec-01 23:44

17-Dec-01 23:44

are you swearing at him???

LOL

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Braulio Dez18-Dec-01 0:02

18-Dec-01 0:02

No, only, is always fun to find people from Spain ( like me), I know few people from Spain that uses CodeProject, ... that´s why... ( not U.S., or U.K., Or U... Big Grin | :-D

)

Nish Nishant18-Dec-01 0:05

18-Dec-01 0:05

Yeah, I understand.
Anyway, I was just kidding Smile | :)

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut