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When non-zero, indicates the data in the ENTRY, TEXT, SPIN, or COMBO control with input focus has been changed by the user since the last EVENT:Accepted. This is automatically reset to zero each time the control generates an EVENT:Accepted. Setting this property (in EVENT:Selected) allows you to ensure that EVENT:Accepted generates to force data validation code to execute, overriding Windows' standard behavior--simply pressing TAB to navigate to another control does not automatically generate EVENT:Accepted.

PROP:Touched can also be interrogated to determine if the content of a BLOB has changed since it was retrieved from disk.

**Example:**

**WinView WINDOW('View'),AT(0,0,320,200),MDI,MAX,HVSCROLL**

**         ENTRY(@S30),AT(0,0,320,180),USE(Fil:Field)**

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

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

**        END**

**SaveCancelPos LONG,DIM(4)**

** CODE**

** OPEN(WinView)**

** SaveCancelPos[1] = ?Cancel{PROP:Xpos}       !Save Cancel button area**

** SaveCancelPos[2] = ?Cancel{PROP:Xpos}+?Cancel{PROP:Width}**

** SaveCancelPos[3] = ?Cancel{PROP:Ypos}**

** SaveCancelPos[4] = ?Cancel{PROP:Ypos}+?Cancel{PROP:Height}**

** ACCEPT**

**  CASE FIELD()**

**  OF ?Fil:Field**

**   CASE EVENT()**

**   OF EVENT:Selected**

**    ?Fil:Field{****PROP:Touched****} = 1         !Force EVENT:Accepted to generate**

**   OF EVENT:Accepted**

**    IF KEYCODE() = MouseLeft AND  |       !Detect user clicking on Cancel**

**      INRANGE(MOUSEX(),SaveCancelPos[1],SaveCancelPos[2]) AND |**

**      INRANGE(MOUSEY(),SaveCancelPos[3],SaveCancelPos[4])**

**     CYCLE                   !User clicked on Cancel **

**    ELSE**

**    !Process the data, whether entered by the user or in the field at the start**

**   END**

**  OF ?Ok**

**   CASE EVENT()**

**   OF EVENT:Accepted**

**    !Write the data to disk**

**   END**

**  OF ?Cancel**

**   CASE EVENT()**

**   OF EVENT:Accepted**

**    !Do not write the data to disk**

**   END**

**  END**

** END**