_EdRevert( ) API Library Routine
Discards all changes made to the file displaying in the specified editing window since it was most recently saved with _EdSave( ).
void _EdRevert(WHANDLE wh)
WHANDLE wh; /* Handle of editing window. */
Example
The following example opens for editing a file specified by a parameter. After some editing, insertion of a new line, indenting of two lines, and deletion of two lines, the changes are discarded using _EdRevert( ).
Visual FoxPro Code
SET LIBRARY TO EDREVERT
= EDREVERT("x")
C Code
#include <pro_ext.h>
FAR Example(ParamBlk FAR *parm)
{
#define pFILENAME ((char FAR *) _HandToPtr(parm->p[0].val.ev_handle))
WHANDLE wh;
if (!_SetHandSize(parm->p[0].val.ev_handle,
parm->p[0].val.ev_length+1))
{
_Error(182); // "Insufficient memory"
}
pFILENAME[parm->p[0].val.ev_length] = '\0';
_HLock(parm->p[0].val.ev_handle);
wh = _EdOpenFile(pFILENAME, FO_READWRITE);
_HUnLock(parm->p[0].val.ev_handle);
_EdSetPos(wh, _EdGetLinePos(wh, 13));
_EdInsert(wh, "Hello, world\r\n", _StrLen("Hello, world\n"));
_EdSelect(wh, _EdGetLinePos(wh, 14), _EdGetLinePos(wh, 16));
_EdIndent(wh, 1);
_EdSelect(wh, _EdGetLinePos(wh, 9), _EdGetLinePos(wh, 12));
_EdDelete(wh);
_EdRevert(wh);
}
FoxInfo myFoxInfo[] = {
{"EDREVERT", (FPFI) Example, 1, "C"},
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};
See Also
Reference
_EdRedo( ) API Library Routine
_EdUndo( ) API Library Routine
_EdUndoOn( ) API Library Routine
_EdSave( ) API Library Routine