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这个问题与 my previous question 有关。
我需要为不同目录(甚至驱动器)中的文件获取IContextMenu*
接口(interface)指针。
查看我的代码,它无法正常工作(例如,文件属性对话框显示错误信息),因为我提供了错误 相关 PIDL(如 this answer 中所述)。
int main() {
CoInitialize(NULL);
LPOLESTR pszFile = OLESTR("c:\\Windows\\notepad.exe");
LPOLESTR pszFile2 = OLESTR("c:\\Windows\\System32\\notepad.exe");
//LPOLESTR pszDir = OLESTR("c:\\Windows\\");
LPITEMIDLIST pidl = NULL;
LPITEMIDLIST pidl2 = NULL;
LPITEMIDLIST pidlDir;
LPCITEMIDLIST pidlItem;
LPCITEMIDLIST pidlItem2;
HRESULT hr;
IShellFolder* pFolder;
//IShellFolder* pDir;
IShellFolder* pDesktop;
IContextMenu* pContextMenu;
HMENU hMenu;
CMINVOKECOMMANDINFO cmi;
TCHAR szTemp[256];
hr = SHGetDesktopFolder(&pDesktop);
if (FAILED(hr)) {
CoUninitialize();
return 0;
}
HWND wnd = ::CreateWindowA("STATIC", "dummy", WS_VISIBLE, 0, 0, 100, 100, NULL, NULL, NULL, NULL);
/*hr = pDesktop->ParseDisplayName(wnd, NULL, pszDir, NULL, &pidlDir, NULL);
if (FAILED(hr)) {
goto clear;
}
hr = pDesktop->BindToObject(pidlDir, 0, IID_IShellFolder, (void**)&pDir);
if (FAILED(hr)) {
goto clear;
}
*/
hr = pDesktop->ParseDisplayName(wnd, NULL, pszFile, NULL, &pidl, NULL);
if (FAILED(hr)) {
goto clear;
}
hr = pDesktop->ParseDisplayName(wnd, NULL, pszFile2, NULL, &pidl2, NULL);
if (FAILED(hr)) {
goto clear;
}
hr = SHBindToParent(pidl, IID_IShellFolder, (void **)&pFolder, &pidlItem);
if (FAILED(hr)) {
goto clear;
}
pFolder->Release();
hr = SHBindToParent(pidl2, IID_IShellFolder, (void **)&pFolder, &pidlItem2);
if (FAILED(hr)) {
goto clear;
}
LPCITEMIDLIST list[] = {pidlItem, pidlItem2};
hr = pFolder->GetUIObjectOf(wnd, 2, (LPCITEMIDLIST *)list, IID_IContextMenu, NULL, (void **)&pContextMenu);
pFolder->Release();
if (SUCCEEDED(hr)) {
hMenu = CreatePopupMenu();
if (hMenu) {
hr = pContextMenu->QueryContextMenu(hMenu, 0, 1, 0x7fff, CMF_EXPLORE);
if (SUCCEEDED(hr)) {
int idCmd = TrackPopupMenu(hMenu,
TPM_LEFTALIGN | TPM_RETURNCMD | TPM_RIGHTBUTTON,
1, 1, 0, wnd, NULL);
if (idCmd) {
cmi.cbSize = sizeof(CMINVOKECOMMANDINFO);
cmi.fMask = 0;
cmi.hwnd = wnd;
cmi.lpVerb = MAKEINTRESOURCEA(idCmd-1);
cmi.lpParameters = NULL;
cmi.lpDirectory = NULL;
cmi.nShow = SW_SHOWNORMAL;
cmi.dwHotKey = 0;
cmi.hIcon = NULL;
hr = pContextMenu->InvokeCommand(&cmi);
if (!SUCCEEDED(hr)) {
wsprintf(szTemp, _T("InvokeCommand failed. hr=%lx"), hr);
MessageBox(0, szTemp, 0, 0);
PostQuitMessage(0);
}
}
}
DestroyMenu(hMenu);
}
pContextMenu->Release();
}
MSG msg;
BOOL bRet;
while ((bRet = GetMessage(&msg, NULL, 0, 0)) != 0) {
if (bRet == -1) {
// Handle Error
}
else {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
clear:
pDesktop->Release();
SHFree(pidl);
SHFree(pidl2);
CoUninitialize();
return 0;
}
也许可以使用 SHCreateDefaultContextMenu
或 CDefFolderMenu_Create2
来实现,但我不知道如何实现。
最佳答案
如果您将 IExplorerBrowser
UI 对象嵌入到您的应用程序中,这是可能的,它从 Windows Vista 开始可用。您可以通过 IResultsFolder
用任何 PIDL 填充它。这是示例代码,它只是从 Win7 平台 SDK (C:\Program Files\Microsoft SDKs\Windows\v7.1\Samples\winui\shell\appplatform\ExplorerBrowserCustomContents\ExplorerBrowserCustomContents.sln) 稍作修改的示例
肯定有另一种使用 IShellView
的方法可以在 Windows XP 上运行,但我还是没有找到它。
#define STRICT_TYPED_ITEMIDS
#include <windows.h>
#include <windowsx.h>
#include <shlobj.h>
#include <shellapi.h>
#include <shlwapi.h>
#include <propkey.h>
#include <new>
#include "resource.h"
#pragma comment(lib, "shell32.lib")
#pragma comment(lib, "shlwapi.lib")
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
HINSTANCE g_hinst = 0;
UINT const KFD_SELCHANGE = WM_USER;
class CFillResultsOnBackgroundThread;
class CExplorerBrowserHostDialog : public IServiceProvider, public ICommDlgBrowser
{
public:
CExplorerBrowserHostDialog() : _cRef(1), _hdlg(NULL), _peb(NULL), _fEnumerated(FALSE), _prf(NULL)
{
}
HRESULT DoModal(HWND hwnd)
{
DialogBoxParam(g_hinst, MAKEINTRESOURCE(IDD_DIALOG1), hwnd, s_DlgProc, (LPARAM)this);
return S_OK;
}
// IUnknown
STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
{
static const QITAB qit[] =
{
QITABENT(CExplorerBrowserHostDialog, IServiceProvider),
QITABENT(CExplorerBrowserHostDialog, ICommDlgBrowser),
{ 0 },
};
return QISearch(this, qit, riid, ppv);
}
STDMETHODIMP_(ULONG) AddRef()
{
return InterlockedIncrement(&_cRef);
}
STDMETHODIMP_(ULONG) Release()
{
long cRef = InterlockedDecrement(&_cRef);
if (!cRef)
delete this;
return cRef;
}
// IServiceProvider
STDMETHODIMP QueryService(REFGUID guidService, REFIID riid, void **ppv)
{
HRESULT hr = E_NOINTERFACE;
*ppv = NULL;
if (guidService == SID_SExplorerBrowserFrame)
{
// responding to this SID allows us to hook up our ICommDlgBrowser
// implementation so we get selection change events from the view
hr = QueryInterface(riid, ppv);
}
return hr;
}
// ICommDlgBrowser
STDMETHODIMP OnDefaultCommand(IShellView * /* psv */)
{
_OnExplore();
return S_OK;
}
STDMETHODIMP OnStateChange(IShellView * /* psv */, ULONG uChange)
{
if (uChange == CDBOSC_SELCHANGE)
{
PostMessage(_hdlg, KFD_SELCHANGE, 0, 0);
}
return S_OK;
}
STDMETHODIMP IncludeObject(IShellView * /* psv */, PCUITEMID_CHILD /* pidl */)
{
return S_OK;
}
void FillResultsOnBackgroundThread(IResultsFolder *prf);
private:
~CExplorerBrowserHostDialog()
{
}
static INT_PTR CALLBACK s_DlgProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
CExplorerBrowserHostDialog *pebhd = reinterpret_cast<CExplorerBrowserHostDialog *>(GetWindowLongPtr(hdlg, DWLP_USER));
if (uMsg == WM_INITDIALOG)
{
pebhd = reinterpret_cast<CExplorerBrowserHostDialog *>(lParam);
pebhd->_hdlg = hdlg;
SetWindowLongPtr(hdlg, DWLP_USER, reinterpret_cast<LONG_PTR>(pebhd));
}
return pebhd ? pebhd->_DlgProc(uMsg, wParam, lParam) : 0;
}
INT_PTR _DlgProc(UINT uMsg, WPARAM wParam, LPARAM lParam);
HRESULT _FillViewWithKnownFolders(IResultsFolder *prf);
void _OnInitDlg();
void _OnDestroyDlg();
void _StartFolderEnum();
void _OnSelChange();
void _OnExplore();
void _OnRefresh();
long _cRef;
HWND _hdlg;
IExplorerBrowser *_peb;
IResultsFolder *_prf;
BOOL _fEnumerated;
static const UINT c_rgControlsShownOnEnum[3]; // controls that will be shown while known folder list is populated
static const UINT c_rgControlsHiddenOnEnum[4]; // controls that will be hidden while known folder list is populated
};
const UINT CExplorerBrowserHostDialog::c_rgControlsShownOnEnum[] =
{
IDC_STATUS,
IDC_ENUMNAME,
IDC_ENUMPATH
};
const UINT CExplorerBrowserHostDialog::c_rgControlsHiddenOnEnum[] =
{
IDC_FOLDERNAME,
IDC_FOLDERPATH,
IDC_LBLFOLDER,
IDC_LBLPATH
};
HRESULT CExplorerBrowserHostDialog::_FillViewWithKnownFolders(IResultsFolder *prf)
{
LPOLESTR pszFile = OLESTR("c:\\Windows\\notepad.exe");
LPOLESTR pszFile2 = OLESTR("c:\\Windows\\System32\\notepad.exe");
IShellFolder* pDesktop;
PIDLIST_RELATIVE pidl = NULL;
PIDLIST_RELATIVE pidl2 = NULL;
HRESULT hr;
hr = SHGetDesktopFolder(&pDesktop);
if (FAILED(hr)) {
return E_FAIL;
}
hr = pDesktop->ParseDisplayName(0, NULL, pszFile, NULL, &pidl, NULL);
if (FAILED(hr)) {
pDesktop->Release();
return E_FAIL;
}
hr = pDesktop->ParseDisplayName(0, NULL, pszFile2, NULL, &pidl2, NULL);
if (FAILED(hr)) {
pDesktop->Release();
return E_FAIL;
}
prf->AddIDList((PIDLIST_ABSOLUTE)pidl, 0);
prf->AddIDList((PIDLIST_ABSOLUTE)pidl2, 0);
pDesktop->Release();
IFolderView2 *pfv2;
IShellView *shellView;
hr = _peb->GetCurrentView(IID_PPV_ARGS(&pfv2));
if (SUCCEEDED(hr)) {
pfv2->SelectItem(0, SVSI_SELECT);
pfv2->SelectItem(1, SVSI_SELECT);
//hr = pfv2->QueryInterface(IID_IOleWindow, (void**)&oleWnd);
hr = _peb->GetCurrentView(IID_PPV_ARGS(&shellView));
if (SUCCEEDED(hr)) {
HWND wnd = 0;
shellView->GetWindow(&wnd);
//SendMessage(wnd, WM_CONTEXTMENU, 0, MAKELPARAM(0,0)); not working
}
}
return S_OK;
}
void CExplorerBrowserHostDialog::_OnInitDlg()
{
// Hide initial folder information
for (UINT i = 0; i < ARRAYSIZE(c_rgControlsHiddenOnEnum); i++)
{
ShowWindow(GetDlgItem(_hdlg, c_rgControlsHiddenOnEnum[i]), SW_HIDE);
}
HWND hwndStatic = GetDlgItem(_hdlg, IDC_BROWSER);
if (hwndStatic)
{
RECT rc;
GetWindowRect(hwndStatic, &rc);
MapWindowRect(HWND_DESKTOP, _hdlg, &rc);
HRESULT hr = CoCreateInstance(CLSID_ExplorerBrowser, NULL, CLSCTX_INPROC, IID_PPV_ARGS(&_peb));
if (SUCCEEDED(hr))
{
IUnknown_SetSite(_peb, static_cast<IServiceProvider *>(this));
FOLDERSETTINGS fs = {0};
fs.ViewMode = FVM_DETAILS;
fs.fFlags = FWF_AUTOARRANGE | FWF_NOWEBVIEW;
hr = _peb->Initialize(_hdlg, &rc, &fs);
if (SUCCEEDED(hr))
{
_peb->SetOptions(EBO_NAVIGATEONCE); // do not allow navigations
// Initialize the explorer browser so that we can use the results folder
// as the data source. This enables us to program the contents of
// the view via IResultsFolder
hr = _peb->FillFromObject(NULL, EBF_NODROPTARGET);
if (SUCCEEDED(hr))
{
IFolderView2 *pfv2;
hr = _peb->GetCurrentView(IID_PPV_ARGS(&pfv2));
if (SUCCEEDED(hr))
{
IColumnManager *pcm;
hr = pfv2->QueryInterface(IID_PPV_ARGS(&pcm));
if (SUCCEEDED(hr))
{
PROPERTYKEY rgkeys[] = {PKEY_ItemNameDisplay, PKEY_ItemFolderPathDisplay};
hr = pcm->SetColumns(rgkeys, ARRAYSIZE(rgkeys));
if (SUCCEEDED(hr))
{
CM_COLUMNINFO ci = {sizeof(ci), CM_MASK_WIDTH | CM_MASK_DEFAULTWIDTH | CM_MASK_IDEALWIDTH};
hr = pcm->GetColumnInfo(PKEY_ItemFolderPathDisplay, &ci);
if (SUCCEEDED(hr))
{
ci.uWidth += 100;
ci.uDefaultWidth += 100;
ci.uIdealWidth += 100;
pcm->SetColumnInfo(PKEY_ItemFolderPathDisplay, &ci);
}
}
pcm->Release();
}
hr = pfv2->GetFolder(IID_PPV_ARGS(&_prf));
if (SUCCEEDED(hr))
{
_StartFolderEnum();
}
pfv2->Release();
}
}
}
}
// If we fail to initialize properly, close the dialog
if (FAILED(hr))
{
EndDialog(_hdlg, IDCLOSE);
}
}
}
// pass -1 for the current selected item
// returns an IShellItem type object
HRESULT GetItemFromView(IFolderView2 *pfv, int iItem, REFIID riid, void **ppv)
{
*ppv = NULL;
HRESULT hr = S_OK;
if (iItem == -1)
{
hr = pfv->GetSelectedItem(-1, &iItem); // Returns S_FALSE if none selected
}
if (S_OK == hr)
{
hr = pfv->GetItem(iItem, riid, ppv);
}
else
{
hr = E_FAIL;
}
return hr;
}
void CExplorerBrowserHostDialog::_OnSelChange()
{
if (_fEnumerated)
{
IFolderView2 *pfv2;
HRESULT hr = _peb->GetCurrentView(IID_PPV_ARGS(&pfv2));
if (SUCCEEDED(hr))
{
IShellItem2 *psi;
hr = GetItemFromView(pfv2, -1, IID_PPV_ARGS(&psi));
if (SUCCEEDED(hr))
{
PWSTR pszName;
hr = psi->GetDisplayName(SIGDN_NORMALDISPLAY, &pszName);
if (SUCCEEDED(hr))
{
SetDlgItemText(_hdlg, IDC_FOLDERNAME, pszName);
CoTaskMemFree(pszName);
}
hr = psi->GetDisplayName(SIGDN_DESKTOPABSOLUTEPARSING, &pszName);
if (SUCCEEDED(hr))
{
SetDlgItemText(_hdlg, IDC_FOLDERPATH, pszName);
CoTaskMemFree(pszName);
}
psi->Release();
}
else if (hr == S_FALSE)
{
SetDlgItemText(_hdlg, IDC_FOLDERNAME, TEXT(""));
SetDlgItemText(_hdlg, IDC_FOLDERPATH, TEXT(""));
}
EnableWindow(GetDlgItem(_hdlg, IDC_EXPLORE), hr == S_OK);
pfv2->Release();
}
}
}
void CExplorerBrowserHostDialog::_OnDestroyDlg()
{
if (_peb)
{
IUnknown_SetSite(_peb, NULL);
_peb->Destroy();
_peb->Release();
_peb = NULL;
}
if (_prf)
{
_prf->Release();
_prf = NULL;
}
}
void CExplorerBrowserHostDialog::_OnExplore()
{
IFolderView2 *pfv2;
HRESULT hr = _peb->GetCurrentView(IID_PPV_ARGS(&pfv2));
if (SUCCEEDED(hr))
{
IShellItem *psi;
hr = GetItemFromView(pfv2, -1, IID_PPV_ARGS(&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);
CoTaskMemFree(pidl);
}
psi->Release();
}
pfv2->Release();
}
}
void CExplorerBrowserHostDialog::_OnRefresh()
{
_fEnumerated = FALSE;
// Update UI
EnableWindow(GetDlgItem(_hdlg, IDC_EXPLORE), FALSE);
EnableWindow(GetDlgItem(_hdlg, IDC_REFRESH), FALSE);
if (SUCCEEDED(_peb->RemoveAll()))
{
_StartFolderEnum();
}
}
void CExplorerBrowserHostDialog::_StartFolderEnum()
{
FillResultsOnBackgroundThread(_prf);
}
void CExplorerBrowserHostDialog::FillResultsOnBackgroundThread(IResultsFolder *prf)
{
_FillViewWithKnownFolders(prf);
_fEnumerated = TRUE;
/*
// Adjust dialog to show proper view info and buttons
for (UINT k = 0; k < ARRAYSIZE(c_rgControlsShownOnEnum); k++)
{
ShowWindow(GetDlgItem(_hdlg, c_rgControlsShownOnEnum[k]), SW_HIDE);
}
for (UINT l = 0; l < ARRAYSIZE(c_rgControlsHiddenOnEnum); l++)
{
ShowWindow(GetDlgItem(_hdlg, c_rgControlsHiddenOnEnum[l]), SW_SHOW);
}*/
EnableWindow(GetDlgItem(_hdlg, IDC_REFRESH), TRUE);
}
INT_PTR CExplorerBrowserHostDialog::_DlgProc(UINT uMsg, WPARAM wParam, LPARAM /* lParam */)
{
INT_PTR iRet = 1; // default for all handled cases in switch below
switch (uMsg)
{
case WM_INITDIALOG:
_OnInitDlg();
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDOK:
case IDCANCEL:
case IDC_CANCEL:
return EndDialog(_hdlg, TRUE);
case IDC_REFRESH:
_OnRefresh();
break;
case IDC_EXPLORE:
_OnExplore();
break;
}
break;
case KFD_SELCHANGE:
_OnSelChange();
break;
case WM_DESTROY:
_OnDestroyDlg();
break;
default:
iRet = 0;
break;
}
return iRet;
}
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
CExplorerBrowserHostDialog *pdlg = new (std::nothrow) CExplorerBrowserHostDialog();
if (pdlg)
{
pdlg->DoModal(NULL);
pdlg->Release();
}
OleUninitialize();
CoUninitialize();
}
return 0;
}
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