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...get the number of Files in the Recycle Bin and their total size?
Autor: Björn Kriedemann
[ Print tip ]  

Tip Rating (5):  
     


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;
  stdcallexternal 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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