2025-11-28 00:35:46 +09:00

575 lines
19 KiB
C++

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved
#define STRICT_TYPED_ITEMIDS
#include <windows.h>
#include <windowsx.h>
#include <shlobj.h>
#include <shlwapi.h>
#include <strsafe.h>
#include <new>
#include "resource.h"
#pragma comment(lib, "comctl32.lib")
#pragma comment(lib, "shell32.lib")
#pragma comment(lib, "shlwapi.lib")
#pragma comment(lib, "propsys.lib")
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
// pass a NULL shell item to cleanup the allocated bitmap
HRESULT SetItemImageImageInStaticControl(HWND hwndStatic, IShellItem *psi)
{
HBITMAP hbmp = NULL;
HRESULT hr = S_OK;
if (psi)
{
IShellItemImageFactory *psiif;
hr = psi->QueryInterface(IID_PPV_ARGS(&psiif));
if (SUCCEEDED(hr))
{
RECT rc;
GetWindowRect(hwndStatic, &rc);
UINT dxdy = min(rc.right - rc.left, rc.bottom - rc.top); // make it square
SIZE size = { dxdy, dxdy };
hr = psiif->GetImage(size, SIIGBF_RESIZETOFIT, &hbmp);
psiif->Release();
}
}
if (SUCCEEDED(hr))
{
HGDIOBJ hgdiOld = (HGDIOBJ) SendMessage(hwndStatic, STM_SETIMAGE, (WPARAM) IMAGE_BITMAP, (LPARAM) hbmp);
if (hgdiOld)
{
DeleteObject(hgdiOld); // if there was an old one clean it up
}
}
return hr;
}
HINSTANCE g_hinst = 0;
class CNameSpaceTreeHost : public IServiceProvider,
public INameSpaceTreeControlEvents
{
public:
CNameSpaceTreeHost() : _cRef(1), _hdlg(NULL), _pnstc(NULL), _pnstc2(NULL), _dwAdviseCookie(0)
{
}
HRESULT DoModal(HWND hwnd)
{
DialogBoxParam(g_hinst, MAKEINTRESOURCE(IDD_DIALOG1), hwnd, s_DlgProc, (LPARAM)this);
return S_OK;
}
// IUnknown
IFACEMETHODIMP QueryInterface(REFIID riid, void **ppv)
{
static const QITAB qit[] =
{
QITABENT(CNameSpaceTreeHost, IServiceProvider),
QITABENT(CNameSpaceTreeHost, INameSpaceTreeControlEvents),
{ 0 },
};
return QISearch(this, qit, riid, ppv);
}
IFACEMETHODIMP_(ULONG) AddRef()
{
return InterlockedIncrement(&_cRef);
}
IFACEMETHODIMP_(ULONG) Release()
{
long cRef = InterlockedDecrement(&_cRef);
if (!cRef)
delete this;
return cRef;
}
// IServiceProvider
IFACEMETHODIMP QueryService(REFGUID /*guidService*/, REFIID /*riid*/, void **ppv)
{
HRESULT hr = E_NOINTERFACE;
*ppv = NULL;
return hr;
}
// INameSpaceTreeControlEvents
IFACEMETHODIMP OnItemClick(IShellItem * /*psi*/, NSTCEHITTEST /*nstceHitTest*/, NSTCECLICKTYPE /*nstceClickType*/) { return S_FALSE; }
IFACEMETHODIMP OnPropertyItemCommit(IShellItem * /*psi*/) { return S_FALSE; }
IFACEMETHODIMP OnItemStateChanging(IShellItem * /*psi*/, NSTCITEMSTATE /*nstcisMask*/, NSTCITEMSTATE /*nstcisState*/) { return S_OK; }
IFACEMETHODIMP OnItemStateChanged(IShellItem * /*psi*/, NSTCITEMSTATE /*nstcisMask*/, NSTCITEMSTATE /*nstcisState*/) { return S_OK; }
IFACEMETHODIMP OnSelectionChanged(IShellItemArray *psiaSelection)
{
IShellItem *psi;
HRESULT hr = psiaSelection->GetItemAt(0, &psi);
if (SUCCEEDED(hr))
{
IShellItem2 *psi2;
hr = psi->QueryInterface(IID_PPV_ARGS(&psi2));
if (SUCCEEDED(hr))
{
_InspectItem(psi2);
psi2->Release();
}
psi->Release();
}
return S_OK;
}
IFACEMETHODIMP OnKeyboardInput(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/) { return S_FALSE; }
IFACEMETHODIMP OnBeforeExpand(IShellItem * /*psi*/) { return S_OK; }
IFACEMETHODIMP OnAfterExpand(IShellItem * /*psi*/) { return S_OK; }
IFACEMETHODIMP OnBeginLabelEdit(IShellItem * /*psi*/) { return S_OK; }
IFACEMETHODIMP OnEndLabelEdit(IShellItem * /*psi*/) { return S_OK; }
IFACEMETHODIMP OnGetToolTip(IShellItem * /*psi*/, LPWSTR /*pszTip*/, int /*cchTip*/) { return E_NOTIMPL; }
IFACEMETHODIMP OnBeforeItemDelete(IShellItem * /*psi*/) { return E_NOTIMPL; }
IFACEMETHODIMP OnItemAdded(IShellItem * /*psi*/, BOOL /*fIsRoot*/) { return E_NOTIMPL; }
IFACEMETHODIMP OnItemDeleted(IShellItem * /*psi*/, BOOL /*fIsRoot*/) { return E_NOTIMPL; }
IFACEMETHODIMP OnBeforeContextMenu(IShellItem * /*psi*/, REFIID /*riid*/, void **ppv) { *ppv = NULL; return E_NOTIMPL; }
IFACEMETHODIMP OnAfterContextMenu(IShellItem * /*psi*/, IContextMenu * /*pcmIn*/, REFIID /*riid*/, void **ppv) { *ppv = NULL; return E_NOTIMPL; }
IFACEMETHODIMP OnBeforeStateImageChange(IShellItem * /*psi*/) { return S_OK; }
IFACEMETHODIMP OnGetDefaultIconIndex(IShellItem * /*psi*/, int * /*piDefaultIcon*/, int * /*piOpenIcon*/) { return E_NOTIMPL; }
private:
~CNameSpaceTreeHost()
{
// COM Member variables have been released in WM_DESTROY.
}
static INT_PTR CALLBACK s_DlgProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
CNameSpaceTreeHost *pnsth = reinterpret_cast<CNameSpaceTreeHost*>(GetWindowLongPtr(hdlg, DWLP_USER));
if (uMsg == WM_INITDIALOG)
{
pnsth = reinterpret_cast<CNameSpaceTreeHost*>(lParam);
pnsth->_hdlg = hdlg;
SetWindowLongPtr(hdlg, DWLP_USER, reinterpret_cast<LONG_PTR>(pnsth));
}
return pnsth ? pnsth->_DlgProc(uMsg, wParam, lParam) : FALSE;
}
INT_PTR _DlgProc(UINT uMsg, WPARAM wParam, LPARAM lParam);
void _OnInitDlg();
BOOL _OnCommand(int id);
void _OnDestroyDlg();
void _OnOpen();
void _InspectItem(IShellItem2 *psi);
void _InitializeRootsAndControls();
void _SetCheckBoxState(int id, BOOL fChecked, BOOL fEnabled);
long _cRef;
HWND _hdlg;
DWORD _dwAdviseCookie;
INameSpaceTreeControl *_pnstc;
INameSpaceTreeControl2 *_pnstc2;
};
void _SetDialogIcon(HWND hdlg, SHSTOCKICONID siid)
{
SHSTOCKICONINFO sii = {sizeof(sii)};
if (SUCCEEDED(SHGetStockIconInfo(siid, SHGFI_ICON | SHGFI_SMALLICON, &sii)))
{
SendMessage(hdlg, WM_SETICON, ICON_SMALL, (LPARAM) sii.hIcon);
}
if (SUCCEEDED(SHGetStockIconInfo(siid, SHGFI_ICON | SHGFI_LARGEICON, &sii)))
{
SendMessage(hdlg, WM_SETICON, ICON_BIG, (LPARAM) sii.hIcon);
}
}
void _ClearDialogIcon(HWND hdlg)
{
DestroyIcon((HICON)SendMessage(hdlg, WM_GETICON, ICON_SMALL, 0));
DestroyIcon((HICON)SendMessage(hdlg, WM_GETICON, ICON_BIG, 0));
}
void CNameSpaceTreeHost::_SetCheckBoxState(int id, BOOL fChecked, BOOL fEnabled)
{
EnableWindow(GetDlgItem(_hdlg, id), fEnabled);
CheckDlgButton(_hdlg, id, fChecked);
}
void CNameSpaceTreeHost::_InitializeRootsAndControls()
{
_pnstc->RemoveAllRoots();
BOOL fEnableStyleChange;
NSTCSTYLE nsctsFlags;
NSTCSTYLE2 nsctsFlags2;
if (_pnstc2)
{
fEnableStyleChange = TRUE;
_pnstc2->GetControlStyle(NSTCS_HASEXPANDOS | NSTCS_HASLINES | NSTCS_FULLROWSELECT | NSTCS_HORIZONTALSCROLL | NSTCS_RICHTOOLTIP | NSTCS_AUTOHSCROLL | NSTCS_EMPTYTEXT, &nsctsFlags);
_pnstc2->GetControlStyle2(NSTCS2_DISPLAYPADDING | NSTCS2_DISPLAYPINNEDONLY | NTSCS2_NOSINGLETONAUTOEXPAND, &nsctsFlags2);
}
else
{
// When running downlevel INameSpaceTreeControl2 may not be available
// Set styles to defaults.
fEnableStyleChange = FALSE;
nsctsFlags = NSTCS_HASEXPANDOS | NSTCS_ROOTHASEXPANDO | NSTCS_FADEINOUTEXPANDOS | NSTCS_NOINFOTIP | NSTCS_ALLOWJUNCTIONS | NSTCS_SHOWSELECTIONALWAYS | NSTCS_FULLROWSELECT;
nsctsFlags2 = NSTCS2_DEFAULT;
}
_SetCheckBoxState(IDC_EXPANDOS, nsctsFlags & NSTCS_HASEXPANDOS, fEnableStyleChange);
_SetCheckBoxState(IDC_LINES, nsctsFlags & NSTCS_HASLINES, fEnableStyleChange);
_SetCheckBoxState(IDC_FULLROWSELECT, nsctsFlags & NSTCS_FULLROWSELECT, fEnableStyleChange);
_SetCheckBoxState(IDC_HORIZONTALSCROLL, nsctsFlags & NSTCS_HORIZONTALSCROLL, fEnableStyleChange);
_SetCheckBoxState(IDC_PADDING, nsctsFlags2 & NSTCS2_DISPLAYPADDING, fEnableStyleChange);
_SetCheckBoxState(IDC_FILTERPINNED, nsctsFlags2 & NSTCS2_DISPLAYPINNEDONLY, fEnableStyleChange);
_SetCheckBoxState(IDC_AUTOEXPAND, nsctsFlags2 & NTSCS2_NOSINGLETONAUTOEXPAND, fEnableStyleChange);
// CLSID_CommonPlacesFolder
IShellItem *psiFavorites;
HRESULT hr = SHCreateItemFromParsingName(L"shell:::{323CA680-C24D-4099-B94D-446DD2D7249E}", NULL, IID_PPV_ARGS(&psiFavorites));
if (SUCCEEDED(hr))
{
// Add a visible root
_pnstc->AppendRoot(psiFavorites, SHCONTF_NONFOLDERS, NSTCRS_VISIBLE | NSTCRS_EXPANDED, NULL); // ignore result
IShellItem *psiDesktop;
hr = SHCreateItemInKnownFolder(FOLDERID_Desktop, 0, NULL, IID_PPV_ARGS(&psiDesktop));
if (SUCCEEDED(hr))
{
// Add hidden root
_pnstc->AppendRoot(psiDesktop, SHCONTF_FOLDERS, NSTCRS_HIDDEN | NSTCRS_EXPANDED, NULL); // ignore result
psiDesktop->Release();
}
psiFavorites->Release();
}
}
void CNameSpaceTreeHost::_OnInitDlg()
{
_SetDialogIcon(_hdlg, SIID_APPLICATION);
HWND hwndStatic = GetDlgItem(_hdlg, IDC_BROWSER);
if (hwndStatic)
{
RECT rc;
GetWindowRect(hwndStatic, &rc);
MapWindowRect(HWND_DESKTOP, _hdlg, &rc);
HRESULT hr = CoCreateInstance(CLSID_NamespaceTreeControl, NULL, CLSCTX_INPROC, IID_PPV_ARGS(&_pnstc));
if (SUCCEEDED(hr))
{
const NSTCSTYLE nsctsFlags = NSTCS_HASEXPANDOS | // Show expandos
NSTCS_ROOTHASEXPANDO | // Root nodes have expandos
NSTCS_FADEINOUTEXPANDOS | // Fade-in-out based on focus
NSTCS_NOINFOTIP | // Don't show infotips
NSTCS_ALLOWJUNCTIONS | // Show folders such as zip folders and libraries
NSTCS_SHOWSELECTIONALWAYS | // Show selection when NSC doesn't have focus
NSTCS_FULLROWSELECT; // Select full width of item
hr = _pnstc->Initialize(_hdlg, &rc, nsctsFlags);
if (SUCCEEDED(hr))
{
// New Windows 7 features
if (SUCCEEDED(_pnstc->QueryInterface(IID_PPV_ARGS(&_pnstc2))))
{
NSTCSTYLE2 nscts2Flags = NSTCS2_DISPLAYPADDING | // Padding between top-level nodes
NTSCS2_NOSINGLETONAUTOEXPAND | // Don't auto-expand nodes with a single child node
NSTCS2_INTERRUPTNOTIFICATIONS | // Register for interrupt notifications on a per-node basis
NSTCS2_DISPLAYPINNEDONLY | // Filter on pinned property
NTSCS2_NEVERINSERTNONENUMERATED; // Don't insert items with property SFGAO_NONENUMERATED
hr = _pnstc2->SetControlStyle2(nscts2Flags, nscts2Flags);
}
if (SUCCEEDED(hr))
{
_pnstc->TreeAdvise(static_cast<INameSpaceTreeControlEvents *>(this), &_dwAdviseCookie);
IUnknown_SetSite(_pnstc, static_cast<IServiceProvider *>(this));
_InitializeRootsAndControls();
}
}
}
}
}
BOOL CNameSpaceTreeHost::_OnCommand(int id)
{
BOOL bRet = TRUE;
switch (id)
{
case IDOK:
case IDCANCEL:
case IDC_CANCEL:
bRet = EndDialog(_hdlg, TRUE);
break;
case IDC_EXPANDOS:
_pnstc2->SetControlStyle(NSTCS_HASEXPANDOS, IsDlgButtonChecked(_hdlg, IDC_EXPANDOS) ? NSTCS_HASEXPANDOS : 0);
_InitializeRootsAndControls();
break;
case IDC_LINES:
_pnstc2->SetControlStyle(NSTCS_HASLINES, IsDlgButtonChecked(_hdlg, IDC_LINES) ? NSTCS_HASLINES : 0);
_InitializeRootsAndControls();
break;
case IDC_FULLROWSELECT:
_pnstc2->SetControlStyle(NSTCS_FULLROWSELECT, IsDlgButtonChecked(_hdlg, IDC_FULLROWSELECT) ? NSTCS_FULLROWSELECT : 0);
_InitializeRootsAndControls();
break;
case IDC_PADDING:
_pnstc2->SetControlStyle2(NSTCS2_DISPLAYPADDING, IsDlgButtonChecked(_hdlg, IDC_PADDING) ? NSTCS2_DISPLAYPADDING : NSTCS2_DEFAULT);
_InitializeRootsAndControls();
break;
case IDC_FILTERPINNED:
_pnstc2->SetControlStyle2(NSTCS2_DISPLAYPINNEDONLY, IsDlgButtonChecked(_hdlg, IDC_FILTERPINNED) ? NSTCS2_DISPLAYPINNEDONLY : NSTCS2_DEFAULT);
_InitializeRootsAndControls();
break;
case IDC_AUTOEXPAND:
_pnstc2->SetControlStyle2(NTSCS2_NOSINGLETONAUTOEXPAND, IsDlgButtonChecked(_hdlg, IDC_AUTOEXPAND) ? NTSCS2_NOSINGLETONAUTOEXPAND : NSTCS2_DEFAULT);
_InitializeRootsAndControls();
break;
case IDC_HORIZONTALSCROLL:
_pnstc2->SetControlStyle(NSTCS_HORIZONTALSCROLL, IsDlgButtonChecked(_hdlg, IDC_HORIZONTALSCROLL) ? NSTCS_HORIZONTALSCROLL : 0);
_InitializeRootsAndControls();
break;
case IDC_EXPLORE:
_OnOpen();
break;
};
return TRUE;
}
void CNameSpaceTreeHost::_OnDestroyDlg()
{
_ClearDialogIcon(_hdlg);
// cleanup the allocated HBITMAP
SetItemImageImageInStaticControl(GetDlgItem(_hdlg, IDC_IMAGE), NULL);
if (_pnstc2)
{
_pnstc2->Release();
_pnstc2 = NULL;
}
if (_pnstc)
{
if (_dwAdviseCookie != -1)
{
_pnstc->TreeUnadvise(_dwAdviseCookie);
_dwAdviseCookie = (DWORD)-1;
}
IUnknown_SetSite(_pnstc, NULL);
_pnstc->Release();
_pnstc = NULL;
}
}
void CNameSpaceTreeHost::_OnOpen()
{
IShellItemArray *psiaItems;
HRESULT hr = _pnstc->GetSelectedItems(&psiaItems);
if (SUCCEEDED(hr))
{
IShellItem *psi;
hr = psiaItems->GetItemAt(0, &psi);
if (SUCCEEDED(hr))
{
PIDLIST_ABSOLUTE pidl;
hr = SHGetIDListFromObject(psi, &pidl);
if (SUCCEEDED(hr))
{
SHELLEXECUTEINFO ei = { sizeof(ei) };
ei.fMask = SEE_MASK_INVOKEIDLIST;
ei.hwnd = _hdlg;
ei.nShow = SW_NORMAL;
ei.lpIDList = pidl;
ShellExecuteEx(&ei);
ILFree(pidl);
}
psi->Release();
}
psiaItems->Release();
}
}
const SFGAOF sfgaofAll =
SFGAO_CANCOPY |
SFGAO_CANMOVE |
SFGAO_CANLINK |
SFGAO_STORAGE |
SFGAO_CANRENAME |
SFGAO_CANDELETE |
SFGAO_HASPROPSHEET |
SFGAO_DROPTARGET |
SFGAO_ENCRYPTED |
SFGAO_ISSLOW |
SFGAO_GHOSTED |
SFGAO_SHARE |
SFGAO_READONLY |
SFGAO_HIDDEN |
// SFGAO_HASSUBFOLDER |
SFGAO_REMOVABLE |
SFGAO_COMPRESSED |
SFGAO_BROWSABLE |
SFGAO_NONENUMERATED |
SFGAO_NEWCONTENT |
SFGAO_LINK |
SFGAO_STREAM |
SFGAO_FILESYSTEM |
SFGAO_FILESYSANCESTOR |
SFGAO_FOLDER |
SFGAO_STORAGEANCESTOR;
#define MAP_ENTRY(x) {L#x, x}
HRESULT ShellAttributesToString(SFGAOF sfgaof, PWSTR *ppsz)
{
*ppsz = NULL;
static const struct { PCWSTR pszName; SFGAOF sfgaof; } c_rgItemAttributes[] =
{
// note, SFGAO_HASSUBFOLDER is too expensive to compute
// and has been excluded from this list
MAP_ENTRY(SFGAO_STREAM),
MAP_ENTRY(SFGAO_FOLDER),
MAP_ENTRY(SFGAO_FILESYSTEM),
MAP_ENTRY(SFGAO_FILESYSANCESTOR),
MAP_ENTRY(SFGAO_STORAGE),
MAP_ENTRY(SFGAO_STORAGEANCESTOR),
MAP_ENTRY(SFGAO_LINK),
MAP_ENTRY(SFGAO_CANCOPY),
MAP_ENTRY(SFGAO_CANMOVE),
MAP_ENTRY(SFGAO_CANLINK),
MAP_ENTRY(SFGAO_CANRENAME),
MAP_ENTRY(SFGAO_CANDELETE),
MAP_ENTRY(SFGAO_HASPROPSHEET),
MAP_ENTRY(SFGAO_DROPTARGET),
MAP_ENTRY(SFGAO_ENCRYPTED),
MAP_ENTRY(SFGAO_ISSLOW),
MAP_ENTRY(SFGAO_GHOSTED),
MAP_ENTRY(SFGAO_SHARE),
MAP_ENTRY(SFGAO_READONLY),
MAP_ENTRY(SFGAO_HIDDEN),
MAP_ENTRY(SFGAO_REMOVABLE),
MAP_ENTRY(SFGAO_COMPRESSED),
MAP_ENTRY(SFGAO_BROWSABLE),
MAP_ENTRY(SFGAO_NONENUMERATED),
MAP_ENTRY(SFGAO_NEWCONTENT),
};
WCHAR sz[512] = {};
StringCchPrintf(sz, ARRAYSIZE(sz), L"0x%08X", sfgaof);
for (int i = 0; i < ARRAYSIZE(c_rgItemAttributes); i++)
{
if (c_rgItemAttributes[i].sfgaof & sfgaof)
{
if (sz[0])
{
StringCchCat(sz, ARRAYSIZE(sz), L", ");
}
StringCchCat(sz, ARRAYSIZE(sz), c_rgItemAttributes[i].pszName);
}
}
return SHStrDup(sz, ppsz);
}
void CNameSpaceTreeHost::_InspectItem(IShellItem2 *psi)
{
SetItemImageImageInStaticControl(GetDlgItem(_hdlg, IDC_IMAGE), psi); // ignore result
PWSTR psz;
HRESULT hr = psi->GetDisplayName(SIGDN_DESKTOPABSOLUTEPARSING, &psz);
SetDlgItemText(_hdlg, IDC_NAME, SUCCEEDED(hr) ? psz : L"");
CoTaskMemFree(psz);
SetDlgItemText(_hdlg, IDC_PATH, L"");
IShellLink *psl;
hr = psi->BindToHandler(NULL, BHID_SFUIObject, IID_PPV_ARGS(&psl));
if (SUCCEEDED(hr))
{
PIDLIST_ABSOLUTE pidl;
hr = psl->GetIDList(&pidl);
if (S_OK == hr)
{
hr = SHGetNameFromIDList(pidl, SIGDN_DESKTOPABSOLUTEPARSING, &psz);
if (SUCCEEDED(hr))
{
SetDlgItemText(_hdlg, IDC_PATH, psz);
CoTaskMemFree(psz);
}
CoTaskMemFree(pidl);
}
psl->Release();
}
PWSTR pszAttributes = NULL;
SFGAOF sfgaof;
hr = psi->GetAttributes(sfgaofAll, &sfgaof);
if (SUCCEEDED(hr))
{
ShellAttributesToString(sfgaof, &pszAttributes);
}
SetDlgItemText(_hdlg, IDC_ATTRIBUTES, pszAttributes ? pszAttributes : L"");
CoTaskMemFree(pszAttributes);
}
INT_PTR CNameSpaceTreeHost::_DlgProc(UINT uMsg, WPARAM wParam, LPARAM)
{
BOOL fRet = TRUE;
switch (uMsg)
{
case WM_INITDIALOG:
_OnInitDlg();
break;
case WM_COMMAND:
fRet = _OnCommand(LOWORD(wParam));
break;
case WM_DESTROY:
_OnDestroyDlg();
break;
default:
fRet = FALSE;
break;
}
return fRet;
}
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR, int)
{
g_hinst = hInstance;
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
OleInitialize(0); // for drag and drop
CNameSpaceTreeHost *pdlg = new (std::nothrow) CNameSpaceTreeHost();
if (pdlg)
{
pdlg->DoModal(NULL);
pdlg->Release();
}
OleUninitialize();
CoUninitialize();
}
return 0;
}