var childArray = Form1.GetChildObjects();
for (var i in childArray) {
  /* 条件 */
  if(childArray[i] instanceOf TextBox){
     childArray[i].active = $FALSE;
  }
}

Record custDB{
  Number  custCode;
  String  custName;
  String  custAddr;
}

Button set_Button {
  X = 21;
  Y = 99;
  Width = 118;
  Height = 45;
  Title = "値のセット";
  
  Function OnTouch( e ) {
    /* 値のセット */  
    ^.custDB.custCode = 1001;
    ^.custDB.custName = "AXIS SOFT";
    ^.custDB.custAddr = "東京都江東区";
  　･･･(略)
  }
}

Button clear_Button {
  X = 154;
  Y = 99;
  Width = 118;
  Height = 45;
  Title = "値の初期化";
  
  Function OnTouch( e ) {
    /*★ ポイント ★*/
    /* 値の初期化 */ 
    var childArray = ^.custDB.GetChildObjects();
    for( var i in childArray ) {
 　   childArray[i].Clear();
    }  
  }
}