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Returns an empty string if the control is not enabled either because it itself has been disabled, or because it is a member of a "parent" control (OPTION, GROUP, MENU, SHEET, or TAB) that has been disabled. (READ-ONLY)

**Example:**

**MDIChild  WINDOW('Child One'),AT(0,0,320,200),MDI,MAX,HVSCROLL**

**      SHEET,AT(0,0,320,175),USE(SelectedTab)**

**       TAB('Tab One'),USE(?TabOne)**

**         PROMPT('Enter Data:'),AT(100,100,20,20),USE(?P1)**

**         ENTRY(@S8),AT(100,140,32,20),USE(E1)**

**         PROMPT('Enter More Data:'),AT(100,200,20,20),USE(?P2)**

**         ENTRY(@S8),AT(100,240,32,20),USE(E2)**

**       END**

**       TAB('Tab Two'),USE(?TabTwo)**

**         PROMPT('Enter Data:'),AT(100,100,20,20),USE(?P3)**

**         ENTRY(@S8),AT(100,140,32,20),USE(E3)**

**         PROMPT('Enter More Data:'),AT(100,200,20,20),USE(?P4)**

**         ENTRY(@S8),AT(100,240,32,20),USE(E4)**

**       END**

**      END**

**      BUTTON('Ok'),AT(100,180,20,20),USE(?Ok)**

**       BUTTON('Cancel'),AT(200,180,20,20),USE(?Cancel)**

**      END**

** CODE**

** OPEN(MDIChild)**

** ACCEPT**

**  CASE EVENT()**

**  OF EVENT:Completed**

**   BREAK**

**  END**

**  CASE FIELD()**

**  OF ?Ok**

**   CASE EVENT()**

**   OF EVENT:Accepted**

**    SELECT**

**   END**

**  OF ?E3**

**   CASE EVENT()**

**   OF EVENT:Accepted**

**    IF ?E3{PROP:Enabled} AND MDIChild{PROP:AcceptAll}**

**                    !Check for visibility during AcceptAll mode**

**     E3 = UPPER(E3)         !Convert the data entered to Upper case **

**     DISPLAY(?E3)         ! and display the upper cased data**

**    END**

**   END**

**  OF ?Cancel**

**   CASE EVENT()**

**   OF EVENT:Accepted**

**    BREAK**

**   END**

**  END**

** END**