PS: SHFileOperation() is very powerful, you might want to take a look at the Flags (fFlags) to adjust it to your needs (like showing an animation, ...)
Markus
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Question
delete directory
Okay, how can I delete a directory of files? I would like to delete more than one directory also. :)
I would like to know how to do it like... (far fetched example just so you understand me)
-----------------
procedure TForm1.Button1Click(Sender
begin
DeleteDirectory('edit1.tex
DeleteDirectory('edit2.tex
end;
-----------------
lol, you know what I mean? That is just a made up example of how I would like it to be. So the User can specify which directory to delete. I would LOVE if someone could help me out on this one! Thank you very much.
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Answers
procedure DelTree(Directory: string);
var
fo: SHFILEOPSTRUCT;
pDir: array[0..255] of char;
begin
fillChar(pDir, 256, #0);
strPCopy(pDir, Directory);
fillchar(fo,sizeof(fo),0);
fo.Wnd := application.Handle;
fo.wFunc := FO_DELETE;
fo.pFrom := pDir;
fo.pTo := '';
fo.fFlags := FOF_NOCONFIRMATION or FOF_SILENT;
SHFileOperation(fo);
end;
I would suggest looking at the Project JEDI Code Library (JCL). http://sourceforge.net/pro
Unit JclFileUtils;
Has two functions:
DelTree
DelTreeEx
These functions allow you to Delete a directory and all its sub-directories without relying on Windows Explorer Shell to do the work for you by using SHFileOperation. SHFileOperation is really not much different than you hilighting the directory and pressing delete. By using the flags the others have mentioned it just supresses and hides the UI windows from popping up.
I would venture to guess this method is also definately much more portable. This actually does the work of determining what files and folders are in each directory and deleting them all recursively using lower level functions. DelTreeEx adds the ability to report progress so you can show your own progress indicator of some kind.
Mike
Normally you can't delete a directory that is not empty...
If you want to empty a directory 'C:\Windows\TempX' you should do this:
Procedure ShellDirDelete(Folder: String);
var
FileOpRec : TSHFileOpStruct;
begin
with FileOpRec do
begin
Wnd := Handle ;
wFunc := FO_DELETE;
if Folder[Length(Folder)] <> '\' then
pFrom := PChar(Folder+'\*.*'#0#0)
else
pFrom := PChar(Folder+'*.*'#0#0);
pTo := nil ;
fFlags := FOF_NOCONFIRMATION or FOF_ALLOWUNDO or FOF_FILESONLY;
hNameMappings := nil;
lpszProgressTitle := nil;
end;
if (SHFileOperation(FileOpRec
(FileOpRec.fAnyOperationsA
begin
ShowMessage('Copy Operation was canceled');
end;
end;
begin
ShellDirDelete('C:\Windows
end;
hmmm if thi is stil open i will do the real option;
s1 is string list or memo (if memo only 32 kb is the limit for names)
procedure deletedir(s:string);
begin
s1.items.clear;
deldir(s);
for i:=s1.itemindex-1 downto 1 do
deletefile(s1[i]);
end;
procedure tform1.deldir(s:string);
var rec :tsearchrec;
begin
if sysutils.findfirst(s + '*.*', faAnyFile, Rec)=0 then
begin
repeat
if (rec.name<>'.') and (rec.name<>'..') then
begin
s1.items.Add(s+Rec.Name);
if rec.attr=fadirectory then getalldir(s+rec.name+'\');
end;
until SysUtils.FindNext(Rec) <> 0;
sysutils.FindClose(rec);
end;
great code;
dys7opia:
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No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area for this question:
to split points between DaFox, akaSurreal, calinutz and ILE
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by: DaFoxPosted on 2003-04-28 at 11:46:52ID: 8414601
Hi dys7opia!
Try this little procedure:
procedure DeleteDir(aDir: String);
var
T: TSHFileOpStruct;
begin
Fillchar(T, SizeOf(T), #0);
with T do
begin
Wnd := 0;
wFunc := FO_DELETE;
pFrom := PChar(aDir + #0#0);
fFlags := FOF_ALLOWUNDO or FOF_SILENT or FOF_NOCONFIRMATION;
end;
Application.ProcessMessage
if (SHFileOperation(T) <> 0) then RemoveDir(aDir);
end;
Markus