Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

  ◄Summary►  ◄Details►  ◄Example►                ◄Contents►  ◄Index►  ◄Back►
──────────────────────────────────────────────────────────────────────────────
 Allows conditional execution based on the evaluation of a Boolean
 expression and processing specific to a particular control type.
 
    IF {condition | TYPEOF ctlname IS controltype} THEN
         [statementblock-1]
    [ELSEIF TYPEOF ctlname IS controltype THEN
         [statementblock-2]]...
    [ELSE
         [statementblock-n]]
    END IF
 
    ■ condition         Any expression that can be evaluated as True
                        (nonzero) or False (zero)
 
    ■ ctlname           Any valid control name
 
    ■ controltype       One of the following valid control types:
 
                        CheckBox           ComboBox          CommandButton
                        Custom             DirListBox        DriveListBox
                        FileListBox        Frame             Label
                        HScrollBar         ListBox           Menu
                        OptionButton       PictureBox        TextBox
                        Timer              VScrollBar
 
    ■ statementblock-1  Any number of statements on any number of lines,
      ...               separated by colons (:)
      statementblock-n
 
 See Also
    ◄IF...END IF Statement►            ◄Loops and Decision Structures►
    ◄SELECT CASE Statement►