VkModified(3x)

NAME
     VkModified - Base class for VkModifiedAttachment

INHERITS FROM
     VkCallbackObject

HEADER FILE
     #include <Vk/VkModified.h>

PUBLIC PROTOCOL SUMMARY
   Constructor/Destructor
           virtual void ~VkModified(void);
           VkModified(Boolean blankIsValue = False);


   Configuration
           virtual void fixPreviousValue(char* value,
                                         Boolean setValueAlso = True);


   Access Functions
           Boolean blankIsValue(void);
           Boolean modified(void);
           char* value(void);
           Boolean latestDisplay(void);
           char* previousValue(void);


   Control Functions
           virtual void setModified(Boolean v);
           virtual void toggleDisplay(void);
           virtual void setValue(char* value);




CLASS DESCRIPTION
          VkModified is the base class for VkModifiedAttachment.  Applications
          will usually use VkModifiedAttachment, but find the methods
          inherited from VkModified useful.



FUNCTION DESCRIPTIONS
   VkModified()
           VkModified(Boolean blankIsValue = False);
           virtual void ~VkModified(void);


          Creates a VkModified object which tracks previous and current text
          values.  It tells when the previous value differs from the current
          value, and can returns the selected value.
          The first argument defaults to False and indicates whether a blank
          (empty string) is considered a valid previous value when displaying
          the folded corner.

   blankIsValue()
           Boolean blankIsValue(void);


          Indicates whether a blank is considered a valid previous value.

   modified()
           Boolean modified(void);


          Indicates whether the previous value differs from the current value.

   setModified()
           virtual void setModified(Boolean v);


          Forces a previous-value-modified state.

   latestDisplay()
           Boolean latestDisplay(void);


          Indicates if the displayed value is the current value rather than
          the previous value.

   toggleDisplay()
           virtual void toggleDisplay(void);


          Switches the displayed value from the current value to the previous
          value and vice-versa.

   value()
           char* value(void);


          Returns the current value.

   previousValue()
           char* previousValue(void);


          Returns the previous value.

   setValue()
           virtual void setValue(char* value);

          Changes the current value.  This also forces the display to the
          current value.

   fixPreviousValue()
           virtual void fixPreviousValue(char* value,
                                         Boolean setValueAlso = True);


          Forces the previous value to be a fixed string.  The second argument
          defaults to True and indicates whether the current value should be
          changed at the same time.

KNOWN DERIVED CLASSES
     VkModifiedAttachment

KNOWN CLASSES THAT USE THIS CLASS
     VkModified

SEE ALSO
     VkModified,
     ViewKit Programmer's Guide
     The X Window System, DEC Press, Bob Sheifler and Jim Gettys
     The X Window System Toolkit, DEC Press, Paul Asente and Ralph Swick
     The OSF/Motif Programmers Reference, Prentice Hall, OSF