_EdSave( ) API Library Routine
_EdSave( ) saves the file in the specified window without ending the editing session.
void _EdSave(WHANDLE wh)
WHANDLE wh; /* Handle of editing window. */
Example
The following example opens for editing a file specified by a parameter. The example inserts a new line, indents two lines, and deletes two lines. After the insertion of the new line, the example calls _EdSave( ). Then, after the indentation and deletion, the example calls _EdUndo( ) three times in an attempt to undo all of the editing, but the insertion made before the call to _EdSave( ) can't be undone. The example performs two more editing operations, inserting two lines and deleting two lines, with a call to _EdSave( ) between them. Last, the example calls _EdRevert( ), but it too can only undo changes made since the last _EdSave( ).
Visual FoxPro Code
SET LIBRARY TO EDSAVE
= EDSAVE("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"));
_EdSave(wh);
_EdSelect(wh, _EdGetLinePos(wh, 14), _EdGetLinePos(wh, 16));
_EdIndent(wh, 1);
_EdSelect(wh, _EdGetLinePos(wh, 9), _EdGetLinePos(wh, 12));
_EdDelete(wh);
_Execute("WAIT WINDOW 'Press any key to undo changes.'");
_EdUndo(wh); // undo deletion
_EdUndo(wh); // undo indent
_EdUndo(wh); // attempt to undo insertion, but can't
_EdSelect(wh, _EdGetLinePos(wh, 14), _EdGetLinePos(wh, 16));
_EdIndent(wh, 1);
_EdSave(wh);
_EdSelect(wh, _EdGetLinePos(wh, 9), _EdGetLinePos(wh, 12));
_EdDelete(wh);
_EdRevert(wh); // undoes deletion
}
FoxInfo myFoxInfo[] = {
{"EDSAVE", (FPFI) Example, 1, "C"},
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};
See Also
Reference
_EdCloseFile( ) API Library Routine
_EdOpenFile( ) API Library Routine
_EdRevert( ) API Library Routine
_EdUndo( ) API Library Routine