Porting Delphi 7 Project to Unix

On Jul 14, 7:42*pm, Bitty <bi...@nospam.chello.nl> wrote:
> Raj schreef:
>
> > Hi Friends,
>
> > * I am in a task to convert the Existing (Windows XP) Delphi 7 Project
> > to Unix platform supported. i am very new to this Unix, i have not
> > worked on that yet, i am trying for the good solution to do this, I
> > have visited some sites they have mentioned that Kylix and Lazarus
> > compilers (IDE) and some free Pascal compilers can do this job, but
> > that too complex process.
> > Can any one please help me on this.
>
> > Thanks in advance.
>
> > Rajkumar D.
>
> Probably you can (should) be thinking of porting your exisiting
> application to OpenGL? This makes it possible to use controls and window
> structures independant from the system you are running, and is a platorm
> what runs on both Windows and Linux, so compiling different versions of
> your program wouldn't be a hassle...
>
> Success!
>
> Johan.

Hi Johan, Where can i download this OpenGL, And where should i install
either in linux or windows platform.

On 2008-07-24, Raj <rajkumar.ad@gmail.com> wrote:
> Hi Johan, Where can i download this OpenGL, And where should i install
> either in linux or windows platform.

Opengl is standardly in most systems. However, keep in mind it is a drawing
api, not a windowing api. You'll have to do everything manually, and the
apps will feel non-native.

Raj schreef:
> On Jul 14, 7:42 pm, Bitty <bi...@nospam.chello.nl> wrote:
>> Raj schreef:
>>
>>> Hi Friends,
>>> I am in a task to convert the Existing (Windows XP) Delphi 7 Project
>>> to Unix platform supported. i am very new to this Unix, i have not
>>> worked on that yet, i am trying for the good solution to do this, I
>>> have visited some sites they have mentioned that Kylix and Lazarus
>>> compilers (IDE) and some free Pascal compilers can do this job, but
>>> that too complex process.
>>> Can any one please help me on this.
>>> Thanks in advance.
>>> Rajkumar D.
>> Probably you can (should) be thinking of porting your exisiting
>> application to OpenGL? This makes it possible to use controls and window
>> structures independant from the system you are running, and is a platorm
>> what runs on both Windows and Linux, so compiling different versions of
>> your program wouldn't be a hassle...
>>
>> Success!
>>
>> Johan.
>
> Hi Johan, Where can i download this OpenGL, And where should i install
> either in linux or windows platform.
Hi Raj,

OpenGL might be a solution, but as Marco said you have to design and
write your API yourself, and it is not a API-native product. It was a
kind of mistake from me to notice this library, while I meant GTK (see
my previous posting, 17-07-2008 20:27).
If you still want to try OpenGL, here is the link:
http://www.opengl.org, but be aware that the library is NOT written in
Delphi or Pascal. Most of the time it is written in C++. I don't know
your programming skills in C++, but to me it is rather difficult to port
the library to Pascal. Maybe someone else has got a solution?

Greetings,

Johan.

On 2008-07-25, Bitty <bitty@nospam.chello.nl> wrote:

> OpenGL might be a solution, but as Marco said you have to design and
> write your API yourself, and it is not a API-native product. It was a
> kind of mistake from me to notice this library, while I meant GTK (see
> my previous posting, 17-07-2008 20:27).

> If you still want to try OpenGL, here is the link:
> http://www.opengl.org, but be aware that the library is NOT written in
> Delphi or Pascal.

Hehehe, it is kind of funny that while reading this, I'm actually working on
validating an OpenGL control in Delphi that sb else developed with FPC.

> Most of the time it is written in C++. I don't know your programming
> skills in C++,

Using a lib is independant on what the lib is written in. It is dependant on
what the interface is. In Opengl this is no problem since the interface is
written on a plain C level.

Some other (sucky) libs only have C++ interfaces. These are harder from
Delphi to interface, but are also hard to interface using any C++ compiler
that is not the C++ compiler the libs are compiled with.

> but to me it is rather difficult to port the library to
> Pascal

Contrary to most C++ compilers, all major pascals (Lazarus/FPC,Delphi) come
with opengl headers preinstalled. (though older Delphi's need an update)

> Maybe someone else has got a solution?

Marco van de Voort schreef:
> On 2008-07-25, Bitty <bitty@nospam.chello.nl> wrote:
>
>> OpenGL might be a solution, but as Marco said you have to design and
>> write your API yourself, and it is not a API-native product. It was a
>> kind of mistake from me to notice this library, while I meant GTK (see
>> my previous posting, 17-07-2008 20:27).
>
>> If you still want to try OpenGL, here is the link:
>> http://www.opengl.org, but be aware that the library is NOT written in
>> Delphi or Pascal.
>
> Hehehe, it is kind of funny that while reading this, I'm actually working on
> validating an OpenGL control in Delphi that sb else developed with FPC.
>
>> Most of the time it is written in C++. I don't know your programming
>> skills in C++,
>
> Using a lib is independant on what the lib is written in. It is dependant on
> what the interface is. In Opengl this is no problem since the interface is
> written on a plain C level.
>
I agree, but I thought OpenGL was written in some foreign C/C++ dialect
which was difficult porting to other platforms. I couldn't find any
useful docs on this topic (until now!), and tomorrow I will try to get
my stuff up and running.
Good tip!

> Some other (sucky) libs only have C++ interfaces. These are harder from
> Delphi to interface, but are also hard to interface using any C++ compiler
> that is not the C++ compiler the libs are compiled with.
>
>> but to me it is rather difficult to port the library to
>> Pascal
>
> Contrary to most C++ compilers, all major pascals (Lazarus/FPC,Delphi) come
> with opengl headers preinstalled. (though older Delphi's need an update)
>
>> Maybe someone else has got a solution?
>
Some research brought up the next websites:
1. http://www.freepascal.org/packages/opengl.html (official OpenGL for
FPC/Lazarus)
2. http://www.friends-of-fpc.org/tutori...phics/dlx_ogl/, (a nice
tutorial on using OpenGL and FPC)

Of course, you can search for yourself on fpc and opengl by Google (or
any other search engine you're using)

Johan.

On 2008-07-25, Bitty <bitty@nospam.chello.nl> wrote:
>>> Most of the time it is written in C++. I don't know your programming
>>> skills in C++,
>>
>> Using a lib is independant on what the lib is written in. It is dependant on
>> what the interface is. In Opengl this is no problem since the interface is
>> written on a plain C level.
>>
> I agree, but I thought OpenGL was written in some foreign C/C++ dialect
> which was difficult porting to other platforms.

Well, afaik nvidia simply supports it on e.g. FreeBSD and Linux. And even if
that is true, a normal C++ compiler could do as little with it as Pascal.

>>
>> Contrary to most C++ compilers, all major pascals (Lazarus/FPC,Delphi) come
>> with opengl headers preinstalled. (though older Delphi's need an update)
>>
>>> Maybe someone else has got a solution?
>>
> Some research brought up the next websites:
> 1. http://www.freepascal.org/packages/opengl.html (official OpenGL for
> FPC/Lazarus)
> 2. http://www.friends-of-fpc.org/tutori...phics/dlx_ogl/, (a nice
> tutorial on using OpenGL and FPC)

(and some posts on www.pascalgamingdevelopment.com's forum)