How to call transaction from webdynpro application

Hi Experts,
I have a web dynpro component zxx_comp.its corresponding web dynpro application zxx_app.
my requirement is , when i test the webdynpro application, i have to call a transaction zxx_txn corresponds to the module pool program zxx_pgm directly . How can i do that?
Regards
Ashwin KV

Hi Ashwin,
Use the following to open a T-Code from WD application.
CALL METHOD cl_http_server=>if_http_server~get_location
IMPORTING
host = lv_host
port = lv_port
out_protocol = lv_protocol.
DATA lv_url type string.
concatenate lv_protocol '://' lv_host ':' lv_port '/sap/bc/gui/sap/its/webgui/?sap-client=&~transaction='zxx_txn' into lv_url.
DATA lo_window_manager TYPE REF TO if_wd_window_manager.
DATA lo_api_component TYPE REF TO if_wd_component.
DATA lo_window         TYPE REF TO if_wd_window.
lo_api_component = wd_comp_controller->wd_get_api( ).
lo_window_manager = lo_api_component->get_window_manager( ).
lo_window_manager->create_external_window(
     EXPORTING
       url    = lv_url
     RECEIVING
       window = lo_window ).
Regards,
Harsha

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