Module pool screen

[former_member515329]

Hi all,

I have developed a modulepool screen...this screen is used for saving vendor details into databse tables...so,here i m entering the vendor number and its details and then save it by using a pushbuton...My problem here is when i enter a vendor number and its detail values and suddenly if a user changes the vendor number...i need to show a message that u need to save vendor details before changing the vendor number..

How to achieve this..as the user first enters the vendor number and presses ENTER buton..then a event will trigger..but from there how to handle that event and how to know exactly the vendor number has changed....

[former_member589029]

Just create a global variable that can hold the vendor number and each time the user hits enter and your event is triggered, check if the vendor number has changed or not:

IF NOT gv_vendor_number IS INITIAL AND
       gv_vendor_number NE your_input_field.
  message w000(oo) with 'Vendor Number has changed'.            
  gv_vendor_number = your_input_field.
ENDIF.

The check for NOT INITIAL is needed because the first time the user enters a value your global variable will be initial but the vendor number hasn't really changed.

Hope that helps,

Michael

[Former Member]

HI,

Hold the vendor number in new field after user press enter.Then compare it with screen field, if both are different then pass the message.

[former_member589029]

Oups, logged on under the wrong user. This is the right one

Michael

[former_member1245113]

Hi Ravi,

in TOP Include
data tmp_lifnr  type lifnr. " This is a Tested Code

in PAI

process after input.
 module user_command_0100.
 field lfa1-lifnr module chk_vendor on request.
   " LFA1-LIFNR is your Screen Field for Vendor Number

in program

MODULE chk_vendor INPUT.
  IF NOT lfa1-lifnr IS INITIAL.
    IF tmp_lifnr IS NOT INITIAL.
      IF lfa1-lifnr NE tmp_lifnr.
        MESSAGE 'Before you change the Vendor, Please Save the Data'
        TYPE 'E'.
      ENDIF.
    ENDIF.
    tmp_lifnr = lfa1-lifnr.
  ENDIF.

ENDMODULE.                 " CHK_VENDOR  INPUT

Cheerz

Ram

Edited by: Rob Burbank on Apr 10, 2010 3:16 PM

[former_member515329]

Hi Micheal,

Thanks for ur reply..

One doubt here is ...gv_vendor_number NE your_input_field

so..gv_vendor_number store the vendor and same as your_input_field...so whenever the vendor number is changed..vendor number will be replicated to both the feilds...how does it will we differinate both these feilds...

[former_member589029]

That is why you check if the field content is different BEFORE you set the current value.

Let's simulate:

Transaction is called and your_input_field is empty (gv_vendor_number is empty as well)

User enters a vendor and hits enter

We check if gv_vendor_number NE your_input_field but because gv_vendor_number is still initial we do not raise the message (because this is the first time the user put something in.

Now we move your_input_field to gv_vendor_number (both have the same value)

User now changes the your_input_field value and hits enter

We again check if gv_vendor_number NE your_input_field and because the gv_vendor_number field still has the OLD value in it we can identify it as being changed and raise the message.

Only then we move your_input_field to gv_vendor_number (both have the same value again) to make sure we capture the next change.

Michael

[former_member515329]

Thanks for ur reply...

so..my code will be like this....

In PAI :

IF NOT gv_vendor_number IS INITIAL AND

gv_vendor_number NE your_input_field.

message w000(oo) with 'Vendor Number has changed'.

gv_vendor_number = your_input_field.

ENDIF.

Move your_input_feild to gv_vendor_number.