msgs12.hlp (Topic list)
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MLM_UNDO (1.2)
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#define INCL_WINMLE
 
MLM_UNDO
mp1 = 0L;    /* not used, must be zero */
mp2 = 0L;    /* not used, must be zero */
 
An application sends an MLM_UNDO message to undo a multiple-line entry-field
(MLE) operation.
 
This message does not use any parameters.
 
Return Value
 
The return value is TRUE if an MLE operation is undone.
 
Comments
 
Only the following MLE operations can be undone:
 
     MLM_CLEAR
     MLM_CUT
     MLM_DELETE
     MLM_INSERT
     MLM_PASTE
     MLM_SETBACKCOLOR
     MLM_SETFONT
     MLM_SETTEXTCOLOR
     MLM_UNDO
     WM_CHAR
 
If an MLM_UNDO message is sent when the undo flag has been cleared, it
reverses the previous undo operation.
 
See Also
 
MLM_QUERYUNDO, MLM_RESETUNDO