IBM Mainframe Forum

[Greenhouse]

Hi all,

Can someone share example of typical source code of that kind of application?

I have no problem to write ISPF panels and REXX code to interact with them, but in C++ it's a different story.

[NicC]

I am not clear on what you want to do. Do you want to write a C++/ISPF application? If so, does C++ have the ability to call an ISPF service? If it does then the relevant manual will have examples.

[enrico-sorichetti]

ISPF does not have any C++ capabilities IIRC
but C is fully supported also the metal option

but in C++ it's a different story.

why it' s a different story ?
a programming language is a programming language,

to see the C syntax for using ISPF services open in EDIT an empty <thing>
type in the command line model and follow the instruction

[enrico-sorichetti]

FFF syndrome, hit enter too early
see
http://publibz.boulder.ibm.com/cgi-bin/ ... 0610213539

http://publibz.boulder.ibm.com/cgi-bin/ ... T#FIRSTHIT

[Greenhouse]

I am not clear on what you want to do. Do you want to write a C++/ISPF application? If so, does C++ have the ability to call an ISPF service? If it does then the relevant manual will have examples.

I want to write user interactive application in C++, just as i said.
C++ have ability to call an ISPF services as I understood from ISPF Services Guide.
Sample code of C++/ISPF program will help me a lot, especially how to get and set values of ISPF panel's variables.

[Robert Sample]

I want to write user interactive application in C++, just as i said.

What, exactly, does this mean? A 3270 terminal session is not interactive -- there is nothing done by the computer until an attention key (such as enter, clear, PF or PA key -- although there are others) is hit. Unlike Windows, for example, where every keystroke is examined by the machine only the full screen of data is processed by a 3270 session. If you expect "interactive" to mean something like a Windows session then you need to either change your expectation or accept that "interactive" (in that sense) on a mainframe cannot be done.

[enrico-sorichetti]

only rexx and clist have the automating passing of values
between services and invoking script thanks to the variable access routine IKJCT441

for compiled languages ( whatever ) You will have to use VGET and VPUT

does not make any difference if PL/1 or C or C++

[NicC]

I want to write user interactive application in C++, just as i said.

Assuming you mean you want to write something to a screen for the user to react to, enter data and send that data to the computer you still have not answered my question. Are you wanting to use ISPF facilities to communicate or just plain C++? You can communicate without ISPF panels - just printf, or whatever, to stdout which defaults to the screen.

Which version of ISPF are you using? Up to, and including, version1 release 7 there is no C++ support.

[Greenhouse]

I want to write user interactive application in C++, just as i said.

Assuming you mean you want to write something to a screen for the user to react to, enter data and send that data to the computer you still have not answered my question. Are you wanting to use ISPF facilities to communicate or just plain C++? You can communicate without ISPF panels - just printf, or whatever, to stdout which defaults to the screen.

Which version of ISPF are you using? Up to, and including, version1 release 7 there is no C++ support.

Plain C++ is not the option for my task.

ISPF 6.0

[nxkjh]

Hi,
This may be the user interactive program.
1. #include <iostream.h>
2.
3. int main(int argc, char* argv[])
4. {
5. unsigned long
6. nWidth = 0,
7. nHeight = 0,
8. nResult = 0;
9.
10. cout << "****************** Interactive Program ***********************\n";
11.
12. // Get the width.
13. cout << "Enter the width of the rectangle in centimeters: ";
14. cin >> nWidth;
15.
16. // Get the height.
17. cout << "Enter the height of the rectangle in centimeters: ";
18. cin >> nHeight;
19.
20. // Do the calculation, and assign it in the result
21. // nResult =
22.
23. // Now print the result.
24. cout << "The result is " << nResult;
25.
26. return 0;
27. }
28.