Cl Gui Frontend Services

5/22/2018 Cl Gui Frontend Services

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CL_GUI_FRONTEND_SERVICES - UDERSON LUIS FERMINO

" I can do everything through Him who strengthens me" ( Philippians 4:13) . page 1

summary :

This article demonstrate an introduction to Object Orientation

demonstrate CL_GUI_FRONTEND_SERVICES class. Is class is

responsible for all services that involve FrontEnd with the system

operational services that mean resources available in the operating system

such as : Create , Delete , Copy , Check Existence, or File

Directories , Collect information of file versions of the programs , access

information networks like IP , Hostname , OS Version

Platform ( OS ( WINDOWS , LINUX ) ) , Exult external programs from SAP ,

such as OS commands . The main methods of this will be presented

class , showing what each method does and how to use them .

About the Author :

Uderson Luis Fermino , graduated in Computer Science from

Faculty Research and Teaching ISPA , operates in the market within 2 years as

Java developer in platforms : ( J2SE , J2EE and J2ME ) , with participation

in large projects involving these technologies . He is a consultant with ABAP

experiences REPORT, ALV ( GRID , LIST, BLOCK, OO , TREE,

HIERARQUICK ) , IDOC , ALE , ONLINE , SAPSCRIPT , SmartForm ,

NETWEAVER ( JCO , BSP , WebDynpro ) .



What is Object Orientation ?

Guidelines to object or to be more need -oriented programming


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object , is a method of problem solving in which the solution of the

software reflects real-world objects , all software elements are

based on real world objects .

A comprehensive introduction to object orientation as a whole would

far beyond the limits of the introduction to ABAP Objects . this documentation

introduces a selection of terms that are used universally in orientation

object and also occurs in ABAP Objects . In subsequent sessions ,

continues to discuss in more detail how these terms are used in

ABAP objects

objects

An object is the source code section that contains data and provides

services. The data form the object's attributes . The services are known

as methods (also known as operations or functions ) . typically ,

methods operate on private data ( the attributes , or state of the object ) , which is

only visible to the methods of the object . Soon the attributes of an object does not

can be modified directly by the user , but only by methods

the object . This ensures the internal consistency of the object , these data are the

private type of the object , we can have public attributes , that are changed the

their states without the use of methods and attributes of the type protected only

can be changed by the object .

classes

The classes are the body of the object . A class is an instance of a

object that is loaded in memory to make the handling of attributes and

methods belonging to the object that the class is instantiated

Object References


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In a program , you identify objects using references and addresses

unique object . Reference objects allows accessing the attributes and

methods of an object .

In object-oriented programming , objects usually have

following properties:

encapsulation

Objects restrict the visibility of their resources ( attributes and methods )

to other users . Every object has an interface , which determines how

other objects can interact with it . The implementation of the object is

encapsulated , that is , invisible outside of the object itself .

polymorphism



Methods identical ( same name ) behave differently in

different classes. Oriented object-oriented constructs contains call

interfaces. They allow to address methods with the same name in

different objects . Although the form of addressing is always the same;

implementation of the method is specific for a particular class.

heritage

You can use an existing class to derive a new class.

Derived classes inherit the data and methods of the superclass . However,

they can replace existing methods is technique is called on

load method , or re - writing method , and also add new ones. heritage

can be analogically compared with the Family Heritage .

Uses of Object Orientation


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Below are some advantages of object-oriented programming :

complex software systems become easier to

understood, since the object-oriented framework provides an

much closer representation of reality than the other

programming techniques.

In a well-developed object-oriented system , it is possible

implement changes at class level , without having to make changes

elsewhere in the system. This reduces the total amount of

maintenance required.

Through polymorphism and inheritance in object-oriented programming

allows reuse individual components .

In an object-oriented system , the amount of work

maintenance and overhaul involved is reduced , since many problems

can be detected and corrected at the design stage .

To achieve these goals requires :

Programming languages object-oriented

Techniques for object oriented programming do not necessarily

depend languages object-oriented programming . on

However , the efficiency of object-oriented programming depends

directly how the techniques of object-oriented programming

are implemented in the system kernel .

Tools Object Orientation



Tools for object-oriented programs allow you to create


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in object-oriented object-oriented language . they allow

that model and store objects and relationships between them .

Object-Oriented Modeling

The modeling object- oriented software system is the most

important , more time consuming and more difficult requirement to achieve

above objectives . Object-oriented design involves more than

only the object -oriented programming , and provides logical advantages

which are independent of the actual implementation .

In ABAP / 4 you can create objects of different ways , will aprenstado two

ways:

Statement object reference , plus the CREATE command

OBJECT

Using the MODEL Editor .

Ref: declaring a type specifying that the object will , object is

declaration is made by TYPE REF TO.

SYNTAX:

TYPE REF TO DATA object_name nome_da_classe_de_referencia .

eg :

TYPE REF TO DATA OBJSERVICE CL_GUI_FRONTEND_SERVICES .

Declaration of an object name OBJSERVICE that makes reference to

CL_GUI_FRONTEND_SERVICES class.

To create the object , you use the CREATE OBJECT command. However there

object creation in OO more instance objects to improve the terms ,

allocation of data memory references that object .

SYNTAX:


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CREATE OBJECT nome_do_objeto_referenciado .

example

CREATE OBJECT OBJSERVICE



When an object is instantiated in ABAP / 4 , you use the command - > known

indicator attributes or methods .

Examples . :

Using GET_TEMP_DIRECTORY method of OBJSERVICE object.

OBJSERVICE - > GET_TEMP_DIRECTORY ( CHANGING TEMP_DIR = INITIALFOLDER

EXCEPTIONS CNTL_ERROR = 1

ERROR_NO_GUI = 2

NOT_SUPPORTED_BY_GUI = 3).

When the method or class attribute is used STATIC ( statico ) , is not

necessary to use the " CREATE OBJECT " command , because the methods already reside

memory , which can be used at any time.

To use a static method or attribute of a class we use the command

" = > " Some class methods will be presented

CL_GUI_FRONTEND_SERVICES , all methods presented here are

static , where we use the command " = > " to call methods or attributes

this class .

NOTE: . Implement static methods are when there is an extreme

necessity because remembering that when the methods or attributes are

he allocated in static memory , fida during the program , if

CL_GUI_FRONTEND_SERVICES of the class during the lifetime of the


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SAPGUI - FRONTEND .

The second form presented here is instantiating objects with the help of

MODEL editor .

1 Declare the object as already explained .

TYPE REF TO DATA OBJSERVICE CL_GUI_FRONTEND_SERVICES .

2 In the ABAP Editor ( this item was used version ) , click on " MODEL " .



2 Select the Template option / to ABAP objects .



3 Select the " Create Object " option

INSTANCE = Name of object

CLASS = Name of the class that the object is reference.

The code that is generated :

CREATE OBJECT OBJSERVICE

* EXCEPTIONS

* = 1 NOT_SUPPORTED_BY_GUI

= 2 * CNTL_ERROR

* Others = 3

.

IF SY - SUBRC < > 0 .

* MESSAGE ID SY - MSGID TYPE SY - MSGTY NUMBER SY - MSGNO

* WITH SY - MSGV1 MSGV2 SY- SY - SY - MSGV3 MSGV4 .

ENDIF .


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4 Call of the instantiated object method.

INSTANCE = Name instantiated object

CLASS / INTERFACE = name of the class or interface that

Any object reference.

METHOD = Method name to be called .



Note: Because this class are static methods as previously

explained, it is not necessary to perform this step , you need only inform the

class and method to call , according to the figure :



The CL_GUI_FRONTEND_SERVICES class

The methods to be described below can be used without instantiating

class, because these methods are of static type where all the data types

declared as static when the object is declared can be used to

any time , as they stay in memory waiting to be used .

Following is the list of methods and their right below the list is described as

using each method .

CHECK_HANDLE

CLASS_CONSTRUCTOR

CLIPBOARD_EXPORT

CLIPBOARD_IMPORT


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DIRECTORY_BROWSE

DIRECTORY_CREATE

DIRECTORY_DELETE

DIRECTORY_EXIST

DIRECTORY_GET_CURRENT

DIRECTORY_LIST_FILES

DIRECTORY_SET_CURRENT

ENVIRONMENT_GET_VARIABLE

ENVIRONMENT_SET_VARIABLE

EXECUTE

FILE_COPY

FILE_DELETE

FILE_EXIST

FILE_GET_SIZE

FILE_GET_VERSION

FILE_OPEN_DIALOG

FILE_SAVE_DIALOG

FILE_GET_ATTRIBUTES

FILE_SET_ATTRIBUTES

GET_COMPUTER_NAME

GET_DESKTOP_DIRECTORY

GET_DRIVE_TYPE

GET_FREE_SPACE_FOR_DRIVE

GET_IP_ADDRESS

GET_PLATFORM


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GET_SAPGUI_WORKDIR

GET_SAPGUI_DIRECTORY

GET_SYSTEM_DIRECTORY

GET_TEMP_DIRECTORY

Get_User_Name

GET_WINDOWS_DIRECTORY

GUI_DOWNLOAD

GUI_UPLOAD

IS_TERMINAL_SERVER



REGISTRY_DELETE_KEY

REGISTRY_DELETE_VALUE

REGISTRY_GET_VALUE

REGISTRY_SET_VALUE

REGISTRY_GET_DWORD_VALUE

REGISTRY_SET_DWORD_VALUE

CONSTRUCTOR

GET_GUI_PROPERTIES

CHECK_GUI_SUPPORT

ADD_SUPPORT_BIT

REMOVE_SUPPORT_BIT

GET_GUI_VERSION

GET_UPLOAD_DOWNLOAD_PATH

FILE_GET_VERSION


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Method that returns the version of a particular file must pass the

address and filename , and CHANGING argument a variable of

type STRING that will contain the value of the version of the specified file.

VERSION DATE TYPE STRING .

CLEAR VERSION.

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_GET_VERSION

EXPORTING

FILENAME = ' C : \ Adobe \ Reader.0 \ Reader \ AdobeUpdateCheck.exe '

CHANGING

VERSION = VERSION

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2

NOT_SUPPORTED_BY_GUI = 3

WRONG_PARAMETER = 4

OTHERS = 5 .

WRITE : / VERSION .

FILENAME = name of the file to be queried

VERSION = variable of type string that receives the file version

consulted



GET _IP_ADDRESS

Method to get the ( Internet Protocol ) IP of the machine running the

FRONTEND , this method returns a STRING in IP format and must be


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passed a variable of type STRING to the method, which will contain the value of

Return of the method containing the IP address .

DATE : IP TYPE STRING .

CALL METHOD CL_GUI_FRONTEND_SERVICES => GET_IP_ADDRESS

RECEIVING

IP_ADDRESS = IP

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2


OTHERS = 4 .

WRITE : / IP .

IP_ADDRESS = returns a variable of type String containing the IP

FrontEnd machine that wheel .

This method brings only the ip of the machine that is running FRONTEND ,

can happen we need to know the IP of a particular machine

network , eg the server , as we have the system variable SY - HOST that

storing in memory the name HOST SAP server , we discovered

Server IP, for this kind of problem we can use the function

RFC_HOST_TO_IP , receiving a name of a particular machine in

network ( HOST ) and returns the same IP . The arguments must be input and

output must be variables of type C size Maximum 100 characters .

Using this function we can discover any IP network .

IP DATA ( 100 ) TYPE C.

CALL FUNCTION ' RFC_HOST_TO_IP '


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EXPORTING

RFCHOST = ' treinamento03 '

IMPORTING

RFCIP = IP

EXCEPTIONS

HOST_TO_IP_CONVERSION_ERROR = 1

OTHERS = 2 .

WRITE : IP .

RFCHOST = HOSTNAME receives as input the type C 100 .

RFCIP = Returns the IP on the HOSTNAME , the return is of type C

100 .



GET_COMPUTER_NAME

Method for capturing the name ( HOST ) of the machine, must pass as

argument to change a variable of type STRING containing the name of

machine that is running the FRONTEND .

DATE HOST TYPE STRING .

CALL METHOD

CL_GUI_FRONTEND_SERVICES => GET_COMPUTER_NAME

CHANGING

COMPUTER_NAME = HOST

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2


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Others = 4 .

WRITE : / HOST .

COMPUTER_NAME = Returns the HOSTNAME of the machine that is

FRONTEND running , with a variable of type STRING .

Identical to GET_IP_ADDRESS method , this method only returns the

address of the host machine that is running the FRONTEND , if

necessary to capture the address name ( HOST ) of a machine of this network

method will not be able to unable this option you can use the function

RFC_IP_TO_HOST , which takes as its argument an internet address ( IP /

INTERNET PROTOCOL ) and returns a variable of type C Maximum Size

100 characters containing the name of the host ( HOST ) on a

given IP .

DATE HOST ( 100 ) TYPE C.

CALL FUNCTION ' RFC_IP_TO_HOST '

EXPORTING

RFCIP = '192 .168.0.3 '

IMPORTING

RFCHOST = HOST

EXCEPTIONS

IP_TO_HOST_CONVERSION_ERROR = 1

OTHERS = 2 .

WRITE : HOST .

RFCIP = Receives a variable of type c 100 , containing IP .

RFCHOST = Returns a variable of type c 100 , containing the


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HOSTNAME on the IP input .



FILE_DELETE

Method to delete a particular file , you must pass the address

(path ) and name of the file to be deleted ( deleted / deleted ) , is a

variable of type I in the argument that RC will return a number informing

deletion .

DATE : RC TYPE I.

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_DELETE

EXPORTING

FILENAME = ' C : \ test.txt '

CHANGING

RC = RC

EXCEPTIONS

FILE_DELETE_FAILED = 1

CNTL_ERROR = 2

ERROR_NO_GUI = 3

FILE_NOT_FOUND = 4

ACCESS_DENIED = 5

UNKNOWN_ERROR = 6


WRONG_PARAMETER = 8

Others = 9.

FILENAME = Receives a variable of type string containing the name of


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file, concatenated path .

RC = Variable type I , with 1 indicating that when the action of

method was successful and 0 failure .



FILE_GET_SIZE

Method for capturing the size of a particular file , must pass

address and file name and a variable of type I , which had the

information on the size of the specified file .

DATA: I TYPE SIZE .

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_GET_SIZE

EXPORTING

FILE_NAME = ' C : \ ping.txt '

IMPORTING

FILE_SIZE = SIZE

EXCEPTIONS

FILE_GET_SIZE_FAILED = 1

CNTL_ERROR = 2

ERROR_NO_GUI = 3


Others = 5 .

WRITE : / SIZE .

FILENAME = Receives a variable of type string containing the name of


FILE_SIZE = Receives a variable of type I to be loaded by


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method as the size of the specified file .



FILE_EXIST

Method to check whether a file exists or not this method

receives as a parameter an address and name of a particular file , and

returns a char from 1 containing the 'X' value if there is no case and SPACE

hesitates file .

DATE: v_Result (1) TYPE C.

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_EXIST

EXPORTING

FILE = ' C : \ Audio \ Speclab \ INSTALL.LOG '

RECEIVING

RESULT = v_Result

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2

WRONG_PARAMETER = 3


Others = 5 .

WRITE v_Result .

FILE = Receives a variable of type string containing the name of


RESULT = Returns a 1 if exist and 0 if the file does not

exists, this variable is of type I.


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FILE_COPY

Method is responsible for copying a file from a particular location,

elsewhere , for example , copy a file in the C : \ temp directory to

\ temp2 : . directory C This method takes as argument an address

origin and the name of the file to be copied and a destination address and the name

the file will be copied to when .

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_COPY

EXPORTING

SOURCE = ' C : \ Audio \ Speclab \ INSTALL.LOG '

DESTINATION = ' C : \ INSTALL.LOG '

OVERWRITE = 'X'

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2

WRONG_PARAMETER = 3

DISK_FULL = 4

ACCESS_DENIED = 5

FILE_NOT_FOUND = 6

DESTINATION_EXISTS = 7

UNKNOWN_ERROR = 8

PATH_NOT_FOUND = 9

DISK_WRITE_PROTECT = 10

DRIVE_NOT_READY = 11


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Others = 13 .

SOURCE = Receives the path and file name to be

copied , must be a variable of type string .

DESTINATION = Receives the path and name of the file will

when to be copied to this destination , the file name does not need to be

even the SOUCE ( ORIGIN ) .



DIRECTORY_CREATE

Method , responsible for creating a certain directory in the System

Operational, this method is independent of the operating system that

FRONTEND is running, it adjusts to create directory according each

Operating system ( Remembering that the commands to create directories

change from OS to OS ) , this method takes as its argument the address

along the name of the directory to be created and returns an argument of type I

that returns a number 0 to -1 for creating and creation error .

eg :

RC DATA TYPE I.

CALL METHOD CL_GUI_FRONTEND_SERVICES => DIRECTORY_CREATE

EXPORTING

DIRECTORY = ' C : \ test '

CHANGING

RC = RC

EXCEPTIONS


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DIRECTORY_CREATE_FAILED = 1

CNTL_ERROR = 2

ERROR_NO_GUI = 3

DIRECTORY_ACCESS_DENIED = 4

DIRECTORY_ALREADY_EXISTS = 5

PATH_NOT_FOUND = 6

UNKNOWN_ERROR = 7


WRONG_PARAMETER = 9

Others = 10 .

WRITE RC .

DIRECTORY = Receives the path of the directory to be created ,

remembering that a directory is a directory only if it is created

directly in ROOT , for example, ROOT Windows OS is a letter

Alphabetical , usually " C : " for the first partition of the hard disk and so

proceeds to other partitions or drives except the drive

diskette that begins on ROOT " A: " . For SO " LINUX , UNIX ," and another that

follow the standard UNIX ROOT starts with the letter " / " regardless of

partition , only switching to the external drives . With this concept these

in mind when creating a directory that is not on a ROOT more

but within a directory , this is called a subdirectory. The data type

entry is a variable of type string

RC = Returns a variable of type I containing information about the

creating the directory or subdirectory .



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DIRECTORY_EXIST

Method responsible for verifying the existence of a given directory

or subdirectory , getting as argument the address of the directory to be

searched and returned a variable of type C , size 1 containing the value

"X " for the existence of the directory and SPACE to nonexistence .

DATE RESULT TYPE C.

CALL METHOD CL_GUI_FRONTEND_SERVICES => DIRECTORY_EXIST

EXPORTING


RECEIVING

RESULT = RESULT

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2

WRONG_PARAMETER = 3


Others = 5 .

WRITE RESULT .

DIRECTORY = Receives the path and name of the directory to be

checked, being a variable of type string .

RESULT = Returns a variable of type c 1 containing the

verification information .




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DIRECTORY_DELETE

Responsible for deletion / deletion of a given directory method , this

method takes as argument an address for a given directory and

returns a variable of type c of length 1 , containing 'X' for deletion

performed successfully and as SPACE deletion not performed .

DATE : RC TYPE C.

CALL METHOD CL_GUI_FRONTEND_SERVICES => DIRECTORY_DELETE

EXPORTING


CHANGING

RC = RC

EXCEPTIONS

DIRECTORY_DELETE_FAILED = 1

CNTL_ERROR = 2

ERROR_NO_GUI = 3

PATH_NOT_FOUND = 4

DIRECTORY_ACCESS_DENIED = 5

UNKNOWN_ERROR = 6


WRONG_PARAMETER = 8

Others = 9.

WRITE RC .

DIRECTORY = Receives the path and name of the directory to be

deleted , with a variable of type string .

RC = Returns a variable of type I containing information about the


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deleting the directory or subdirectory .



Responsible for checking the operating system method that is running

the FRONTEND , this method returns a variable of type I, containing an

certain number that SAP has built a table containing

for this number , where each number is associated with a platform to

find the number on the platform class

CL_GUI_FRONTEND_SERVICES , contains attributes of type constants

(default values ) containing the type of platform , if we want to return the

d platform name just check what value contained in these constant relative

the value returned by the method .

The constants are :

HKEY_USERS

PLATFORM_UNKNOWN

PLATFORM_WINDOWS95

PLATFORM_WINDOWS98

PLATFORM_NT351

PLATFORM_NT40

PLATFORM_NT50

PLATFORM_MAC

PLATFORM_OS2

PLATFORM_LINUX

PLATFORM_HPUX

PLATFORM_TRU64


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PLATFORM_AIX

PLATFORM_SOLARIS

DATE : DECK TYPE I ,

NOME_PLATF TYPE STRING .

CALL METHOD CL_GUI_FRONTEND_SERVICES => GET_PLATFORM

RECEIVING

PLATFORM PLATFORM =

EXCEPTIONS

ERROR_NO_GUI = 1

CNTL_ERROR = 2


Others = 4 .

PLATFORM = Returns a variable of type I, containing an amount

on the OS .



To check which number on the SAP stores just use any

type of multiple condition to find what ever that SAP stores

number on the OS.

eg :

CASE PLATFORM .

WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_WINDOWS95 .

NOME_PLATF = ' WN32_95 ' .

WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_WINDOWS98 .

NOME_PLATF = ' WN32_98 ' .


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WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_NT351 .

NOME_PLATF = ' WN32 ' .





WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_MAC .

NOME_PLATF = 'MC' .

WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_OS2 .

NOME_PLATF = 'PM' .

WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_LINUX .

NOME_PLATF = 'MF ' .

WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_HPUX .


WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_TRU64 .


WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_AIX .


WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_SOLARIS .


WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_MACOSX .


WHEN 14 . " PLATFORM_WINDOWSXP


WHEN CL_GUI_FRONTEND_SERVICES = > PLATFORM_UNKNOWN .


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NOME_PLATF = ' ? ' .

WHEN OTHERS .

NOME_PLATF = ' ? ' .

ENDCASE .

WRITE NOME_PLATF .

CL_GUI_FRONTEND_SERVICES = > Where XXX = PLATFORM_XXXX and

equals the numerical value of each constant.



Get_User_Name

Method responsible for returning user logged into the system , receives as

argument a variable of type STRING .

DATE NAME TYPE STRING .

CALL METHOD CL_GUI_FRONTEND_SERVICES = > Get_User_Name

CHANGING

USER_NAME = NAME

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2


Others = 4 .

WRITE NAME .

USER_NAME = Returns a string variable containing the

name of the user logged into the system .

Note: The variable sy - uname , stores are same information, and more


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is quicker to use than the variable method.



EXECUTE

Method , responsible for performing functions express the SAP system , this

method is somewhat complex and will be described by the parties.

Examples of some applications that can be run with this method.

= NOTEPAD.EXE Notepad

= Cmd.exe Command Prompt

= WINWORD.EXE Microsoft Word

CALC.EXE = Calculator

Firefox.exe = Internet Browser

CALL METHOD CL_GUI_FRONTEND_SERVICES = > EXECUTE

EXPORTING

DOCUMENT = ''

APPLICATION = ' cmd.exe '

PARAMETER = ' ping 192.168.0.4 '

* = DEFAULT_DIRECTORY

* MAXIMIZED = 'X' " Initializes Maximized

* Minimized = 'X' " Initializes Minimized

* SYNCHRONOUS =

* OPERATION = ' OPEN '

EXCEPTIONS

CNTL_ERROR = 1

ERROR_NO_GUI = 2


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BAD_PARAMETER = 3

FILE_NOT_FOUND = 4

PATH_NOT_FOUND = 5

FILE_EXTENSION_UNKNOWN = 6

ERROR_EXECUTE_FAILED = 7

SYNCHRONOUS_FAILED = 8


OTHERS = 10 .

When you run a particular application that requires parameters

input , such as a command prompt , use the parameter

APPLICANTION passing this parameter to the name of the application to be

called, and passes the parameter PARAMETER ( s ) parameters

needed to run the application .

Note that in the example is called the DOS command prompt , passing the

ping command, when the prompt application is opened it will run the command

ping .

If needed just open the application can use the parameters :

Or DOCUMENT APPLICATION .

Example : I opened a WORD document or block of Note .



To open an address of internete just pass the URL (Uniform Resorce

Location ) for the parameter DOCUMENT . Exe : . Www.flino.com.br

FILE_OPEN_DIALOG

Responsible for file search method , this method only makes


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Search specified file , to collect a particular file is

must use GUI_UPLOAD method. The great advantage of using this

method is that it allows you to select more than one file and make the

user to specify the correct file path . This method only serves

to collect the correct path for a given file after the path

be collected , it is possible to make various operations, for example, delete

save copy in memory, etc. ....

DATE : TYPE IT_TAB FileTable ,

RC TYPE I.

REFRESH : IT_TAB .

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_OPEN_DIALOG

EXPORTING

WINDOW_TITLE = 'Select File'

DEFAULT_EXTENSION = . ' Doc'

DEFAULT_FILENAME = ' ABAP.doc '

FILE_FILTER = . ' Doc'

Multiselection = 'X'

CHANGING

FILE_TABLE = IT_TAB

RC = RC .

WINDOW_TITLE = Title of Window .

DEFAULT_EXTENSION = Extension which should start as standard,

just start by default , can be changed over the.

DEFAULT_FILENAME = Name of the file to be searched , which will start

default and can be changed .


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FILE_FILTER = Extension to be collected , the

files , in this case only files with the specified extension , you can

be collected.

Multiselection = Allows the selection of multiple files, where

X is equivalent to the multiple choice, which begins this option with SPACE .

All types of input data are of type string .

FILE_TABLE = Returns a structure of type FILE_TABLE ,

containing the name (s) ( s) ( s ) file ( s ) selected ( s ) .

example :

We will create a Selection - Screen , with block and frame that contain a selectoptions ,

that stores the ( s ) address ( s ) of the file directory ( s ) or ( s ) .

This select -options , when triggered by the event " AT SELECTIONSCREEN

ON VALUE -REQUEST FOR " will call the method , and collect

addresses multiple files .

SELECTION -SCREEN BEGIN OF BLOCK WITH M FRAME .

SELECT - OPTIONS FOR SO_FPATH RLGRAP - FILENAME .

SELECTION -SCREEN END OF BLOCK M.

AT SELECTION -SCREEN ON VALUE -REQUEST FOR LOW - SO_FPATH .

REFRESH : IT_TAB .

CALL METHOD CL_GUI_FRONTEND_SERVICES => FILE_OPEN_DIALOG

EXPORTING

WINDOW_TITLE = 'Select File'

DEFAULT_EXTENSION = . ' Doc'


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DEFAULT_FILENAME = ' ABAP.doc '

FILE_FILTER = . ' Doc'

Multiselection = 'X'

CHANGING

FILE_TABLE = IT_TAB

RC = RC .

LOOP AT INTO IT_TAB SO_FPATH - LOW .

SO_FPATH -SIGN = ' I'.

SO_FPATH -OPTION = ' EQ' .

APPEND SO_FPATH .

ENDLOOP .





DIRECTORY_BROWSE

Method responsible for collecting an address of a given directory

FILE_OPEN_DIALOG equivalent method. With this method may be

search in graphical mode selection of certain directories . are

past three parameters to this method are the three parameters that

passed are of type STRING is the title of one ( WINDOW_TITLE ) the window


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declares


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Cl Gui Frontend Services

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