Adding new container in other container

[Former Member]

Hi experts,

I need to add container to other container dynamically.

It's my coding:

DATA lr_cont_pc TYPE REF TO CL_WD_TRANSPARENT_CONTAINER.

DATA lr_cont TYPE REF TO cl_wd_uielement_container.

DATA lr_matrix TYPE REF TO cl_wd_matrix_data.

data lr_cont_2 TYPE REF TO cl_wd_uielement_container.

lr_cont ?= view->get_element( 'RIGHT_CONTAINER' ).

CALL METHOD CL_WD_TRANSPARENT_CONTAINER=>NEW_TRANSPARENT_CONTAINER

EXPORTING

id = 'CONT_PC'

RECEIVING

control = lr_cont_pc.

lr_matrix = cl_wd_matrix_data=>new_matrix_data( lr_cont_pc ).

lr_cont_pc->set_layout_data( lr_matrix ).

CALL METHOD lr_cont->add_child

EXPORTING

index = 1

the_child = lr_cont_pc.

But I have dump:

OBJECTS_OBJREF_NOT_ASSIGNED

Access via 'NULL' object reference not possible.

Method: CREATE_NW7_BY_VIEW_ELEMENT of program CL_NW7_VIEW_ELEMENT_ADAPTER===CP

Thanks in advance

Evgeniy

[Former Member]

Correct coding:

DATA lr_layout TYPE REF TO cl_wd_matrix_layout .

lr_cont_pc = cl_wd_transparent_container=>new_transparent_container(

id = 'CONT_PC' ).

lr_matrix = cl_wd_matrix_data=>new_matrix_data( element = lr_cont_pc ).

lr_layout ?= cl_wd_matrix_layout=>new_matrix_layout( lr_cont_pc ).

lr_cont ?= view->get_element( 'RIGHT_CONTAINER' ).

lr_cont->add_child( index = 5

the_child = lr_cont_pc ).

It was necessery to add this:

lr_layout ?= cl_wd_matrix_layout=>new_matrix_layout( lr_cont_pc ).

[Former Member]

mostly when i see this error CREATE_NW7_BY_VIEW_ELEMENT then the problem is that one or more compulsory property of the UI element is not binded.

So please check which compulsory property is not bound, i leave this investigation for your learning. If you are not able to find out then let me know.