Not allow to write on a matchcode

[Former Member]

Hi,

I've created a matchcode and I'm using it on an abap program.

parameters: myparameter like zmytable-myfield matchcode object zmymatchcode default 'myparam'.

My question is, how can I get that my matchcode can't be written?  I mean, the user only must select the available values of the matchcode.

Thanks in advance.

Regards.

[RaymondGiuseppi]

If there are not too many values, you could define the PARAMETERS myparameter AS LISTBOX VISIBLE LENGTH 30.

Else disable the input-ability of the parameter in the PBO (AT SELECTION-SCREEN OUTPUT) using a MODIF ID value to identify field. Manage the F4 in POV (AT SELECTION-SCREEN ON VALUE-REQUEST) and store the selected value in a global variable or no-display parameter (to be stored in variant) that you will copy in PBO back to the parameter, also trigger a PAI/PBO cycle after the F4 execution using a tool like FM SAPGUI_SET_FUNCTIONCODE or static method CL_GUI_CFW=>SET_NEW_OK_CODE.

Regards,

Raymond

[Former Member]

Hello Raymond,

Please, could you give an example in abap? My list has only two values and I want to avoid that the field could be changed.

Thanks again.

[RaymondGiuseppi]

No coding with ddic

Create a domain via SE11 and give the two allowed values, use this domain in one data element affected to the dynpro field and define the

PARAMETERS: parametername TYPE datalementname AS LISTBOX VISIBLE LENGTH 60.

Coding

Use of FM likeVRM_SET_VALUES. Use same syntax for the parameter, but fill "manullay" the value list and attach it to field with this FM.

INITIALIZATION.
* LISTBOX values
  DATA: vrm_id TYPE vrm_id,
        vrm_values TYPE vrm_values,
        vrm_value LIKE LINE OF vrm_values.
   CLEAR vrm_value.
  vrm_value-key = 'V01'.
  vrm_value-text = text-v01.
  APPEND vrm_value TO vrm_values.
  vrm_value-key = 'V02'.
  vrm_value-text = text-v02.
  APPEND vrm_value TO vrm_values.
  vrm_id = 'PARAMETERNAME'.
  CALL FUNCTION 'VRM_SET_VALUES'
    EXPORTING
      id              = vrm_id
      values          = vrm_values
    EXCEPTIONS
      id_illegal_name = 1
      OTHERS          = 2.

Radiobuttons

Define your prameter as NO-DISPLAY. Create a radiobutton group with one button for each value. put the radiobutton in a group without frame, and fill the hidden parameter in a AT SELECTION-SCREEN ON GROUP, you could also insure coherence, set/unset radiobutton depending on value of parameter (e.g. when your report is called via SUBMIT)

And many, many other solutions, just try.

Regards,

Raymond

[Former Member]

Ok,

thanks a lot.