Source code of Windows XP (NT5)
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116 lines
3.1 KiB

#include "precomp.hxx"
#pragma hdrstop
#include "util.h"
#include "dll.h"
#include "resource.h"
class CMyDocsCopyHook : public ICopyHook
{
public:
CMyDocsCopyHook();
// IUnknown
STDMETHOD(QueryInterface)(REFIID riid, void **ppv);
STDMETHOD_(ULONG, AddRef)();
STDMETHOD_(ULONG, Release)();
// ICopyHook
STDMETHOD_(UINT,CopyCallback)(HWND hwnd, UINT wFunc, UINT wFlags,
LPCTSTR pszSrcFile, DWORD dwSrcAttribs,
LPCTSTR pszDestFile, DWORD dwDestAttribs);
private:
~CMyDocsCopyHook();
LONG _cRef;
};
STDMETHODIMP CMyDocsCopyHook::QueryInterface(REFIID riid, void **ppv)
{
static const QITAB qit[] = {
QITABENT(CMyDocsCopyHook, ICopyHook), // IID_ICopyHook
{ 0 },
};
return QISearch(this, qit, riid, ppv);
}
STDMETHODIMP_ (ULONG) CMyDocsCopyHook::AddRef()
{
return InterlockedIncrement(&_cRef);
}
STDMETHODIMP_ (ULONG) CMyDocsCopyHook::Release()
{
if (InterlockedDecrement(&_cRef))
return _cRef;
delete this;
return 0;
}
CMyDocsCopyHook::CMyDocsCopyHook() : _cRef(1)
{
DllAddRef();
}
CMyDocsCopyHook::~CMyDocsCopyHook()
{
DllRelease();
}
// ICopyHook methods
UINT CMyDocsCopyHook::CopyCallback(HWND hwnd, UINT wFunc, UINT wFlags,
LPCTSTR pszSrcFile, DWORD dwSrcAttribs,
LPCTSTR pszDestFile, DWORD dwDestAttribs)
{
UINT uRes = IDYES;
if ((wFunc == FO_COPY) || (wFunc == FO_MOVE))
{
TCHAR szPersonal[MAX_PATH];
if (S_OK == SHGetFolderPath(NULL, CSIDL_PERSONAL | CSIDL_FLAG_DONT_VERIFY, NULL, SHGFP_TYPE_CURRENT, szPersonal) &&
lstrcmpi(pszSrcFile, szPersonal) == 0)
{
// the source is the personal directory, now check if the
// destination is on the desktop...
DWORD dwRes = IsPathGoodMyDocsPath(hwnd, pszDestFile);
if (dwRes == PATH_IS_NONEXISTENT)
{
lstrcpyn(szPersonal, pszDestFile, ARRAYSIZE(szPersonal));
if (PathRemoveFileSpec(szPersonal))
{
dwRes = IsPathGoodMyDocsPath(hwnd, szPersonal);
}
}
if (dwRes == PATH_IS_DESKTOP)
{
// keep the user from moving the personal folder to the desktop
TCHAR szVerb[ 32 ];
LoadString(g_hInstance, (wFunc == FO_COPY) ? IDS_COPY : IDS_MOVE, szVerb, ARRAYSIZE(szVerb));
uRes = IDNO;
GetFolderDisplayName(CSIDL_PERSONAL, szPersonal, ARRAYSIZE(szPersonal));
ShellMessageBox(g_hInstance, hwnd,
(LPTSTR)IDS_NODRAG_DESKTOP_NOT_HIDDEN, szPersonal,
MB_OK | MB_ICONSTOP, szPersonal, szVerb);
}
}
}
return uRes;
}
HRESULT CMyDocsCopyHook_CreateInstance(IUnknown *punkOuter, IUnknown **ppunk, LPCOBJECTINFO poi)
{
CMyDocsCopyHook * pMDCH = new CMyDocsCopyHook();
if (pMDCH)
{
*ppunk = SAFECAST(pMDCH, ICopyHook*);
return S_OK;
}
*ppunk = NULL;
return E_OUTOFMEMORY;
}