Mega Code Archive
How to get the number of Files in the Recycle Bin and their total size
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Title: How to get the number of Files in the Recycle Bin and their total size
type
PSHQueryRBInfo = ^TSHQueryRBInfo;
TSHQueryRBInfo = packed record
cbSize: DWORD;
// Size of the structure, in bytes.
// This member must be filled in prior to calling the function.
i64Size: Int64;
// Total size of all the objects in the specified Recycle Bin, in bytes.
i64NumItems: Int64;
// Total number of items in the specified Recycle Bin.
end;
const
shell32 = 'shell32.dll';
function SHQueryRecycleBin(szRootPath: PChar; SHQueryRBInfo: PSHQueryRBInfo): HResult;
stdcall; external shell32 Name 'SHQueryRecycleBinA';
function GetDllVersion(FileName: string): Integer;
var
InfoSize, Wnd: DWORD;
VerBuf: Pointer;
FI: PVSFixedFileInfo;
VerSize: DWORD;
begin
Result := 0;
InfoSize := GetFileVersionInfoSize(PChar(FileName), Wnd);
if InfoSize 0 then
begin
GetMem(VerBuf, InfoSize);
try
if GetFileVersionInfo(PChar(FileName), Wnd, InfoSize, VerBuf) then
if VerQueryValue(VerBuf, '\', Pointer(FI), VerSize) then
Result := FI.dwFileVersionMS;
finally
FreeMem(VerBuf);
end;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
DllVersion: integer;
SHQueryRBInfo: TSHQueryRBInfo;
r: HResult;
begin
DllVersion := GetDllVersion(PChar(shell32));
if DllVersion = $00040048 then
begin
FillChar(SHQueryRBInfo, SizeOf(TSHQueryRBInfo), #0);
SHQueryRBInfo.cbSize := SizeOf(TSHQueryRBInfo);
R := SHQueryRecycleBin(nil, @SHQueryRBInfo);
if r = s_OK then
begin
label1.Caption := Format('Size:%d Items:%d',
[SHQueryRBInfo.i64Size, SHQueryRBInfo.i64NumItems]);
end
else
label1.Caption := Format('Err:%x', [r]);
end;
end;
The SHQueryRecycleBin API used in this method is
only available on systems with the latest shell32.dll installed with IE4 /
Active Desktop.
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