Newsgroup: it.comp.lang.delphi
Titolo: Cancellate tutti i file di una directory

Come fare fare questo? Ho provato con deletefile ma non è possibile
utilizzare i caratteri jolly per cui riesco a cancellare solo file di cui
conosco i nomi.
Grazie a chi vorrà rispondermi.
Gino

 ha scritto nel messaggio
news:8o41kc$4e2$1...@nslave1.tin.it...


 conosco i nomi.
Guarda la ShFileOperation (unit ShellAPI credo)
Ciao
--
Andrea Magni
E-Mail: 
ama...@interac.it


[Now Supported on Windows NT]
Performs a copy, move, rename, or delete operation on a file system object.
WINSHELLAPI int WINAPI SHFileOperation(
    LPSHFILEOPSTRUCT lpFileOp
   );
Parameters
lpFileOp
Pointer to an SHFILEOPSTRUCT structure that contains information the
function needs to carry out the operation.
Return Values
Returns zero if successful or nonzero if an error occurs.
Contains information that the SHFileOperation function uses to perform file
operations.
typedef struct _SHFILEOPSTRUCT { // shfos
    HWND         hwnd;
    UINT         wFunc;
    LPCSTR       pFrom;
    LPCSTR       pTo;
    FILEOP_FLAGS fFlags;
    BOOL         fAnyOperationsAborted;
    LPVOID       hNameMappings;
    LPCSTR       lpszProgressTitle;
} SHFILEOPSTRUCT, FAR *LPSHFILEOPSTRUCT;
Members
hwnd
Handle of the dialog box to use to display information about the status of
the operation.
wFunc
Operation to perform. This member can be one of the following values:
FO_COPY Copies the files specified by pFrom to the location specified by
pTo.
FO_DELETE Deletes the files specified by pFrom (pTo is ignored).
FO_MOVE Moves the files specified by pFrom to the location specified by pTo.
FO_RENAME Renames the files specified by pFrom.
pFrom
Pointer to a buffer that specifies one or more source file names. Multiple
names must be null-separated. The list of names must be double
null-terminated.
pTo
Pointer to a buffer that contains the name of the destination file or
directory. The buffer can contain mutiple destination file names if the
fFlags member specifies FOF_MULTIDESTFILES. Multiple names must be
null-separated. The list of names must be double null-terminated.
fFlags
Flags that control the file operation. This member can be a combination of
the following values:
FOF_ALLOWUNDO Preserves undo information, if possible.
FOF_CONFIRMMOUSE Not implemented.
FOF_FILESONLY Performs the operation only on files if a wildcard filename
(*.*) is specified.
FOF_MULTIDESTFILES Indicates that the pTo member specifies multiple
destination files (one for each source file) rather than one directory where
all source files are to be deposited.
FOF_NOCONFIRMATION Responds with "yes to all" for any dialog box that is
displayed.
FOF_NOCONFIRMMKDIR Does not confirm the creation of a new directory if the
operation requires one to be created.
FOF_RENAMEONCOLLISION Gives the file being operated on a new name (such as
"Copy #1 of...") in a move, copy, or rename operation if a file of the
target name already exists.
FOF_SILENT Does not display a progress dialog box.
FOF_SIMPLEPROGRESS Displays a progress dialog box, but does not show the
filenames.
FOF_WANTMAPPINGHANDLE Fills in the hNameMappings member. The handle must be
freed by using the SHFreeNameMappings function.
fAnyOperationsAborted
Value that receives TRUE if the user aborted any file operations before they
were completed or FALSE otherwise.
hNameMappings
Handle of a filename mapping object that contains an array of SHNAMEMAPPING
structures. Each structure contains the old and new path names for each file
that was moved, copied, or renamed. This member is used only if fFlags
includes FOF_WANTMAPPINGHANDLE.
lpszProgressTitle
Pointer to a string to use as the title for a progress dialog box. This
member is used only if fFlags includes FOF_SIMPLEPROGRESS.
Remarks
If pFrom or pTo are unqualified names, the current directories are taken
from the global current drive and directory settings as managed by the
GetCurrentDirectory and SetCurrentDirectory functions.
See Also
GetCurrentDirectory, SetCurrentDirectory, SHFileOperation,
SHFreeNameMappings, SHNAMEMAPPING