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[SHELL32] Implement DragDropHandlers shell extension context menus (#8143)

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CORE-11240 CORE-11238
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Whindmar Saksit 2025-06-19 20:54:28 +02:00 • committed by GitHub
parent 06414ac85a
commit 59e556f3f3
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11 changed files with 234 additions and 13 deletions
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106
dll/win32/shell32/CDefaultContextMenu.cpp
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@ -32,6 +32,112 @@ static BOOL InsertMenuItemAt(HMENU hMenu, UINT Pos, UINT Flags)
return InsertMenuItemW(hMenu, Pos, TRUE, &mii);
}
static void DCMA_DestroyEntry(DCMENTRY &dcme)
{
if (!dcme.pCM)
return;
IUnknown_SetSite(dcme.pCM, NULL);
dcme.pCM->Release();
dcme.pCM = NULL;
}
void DCMA_Destroy(HDCMA hDCMA)
{
UINT i = 0;
for (DCMENTRY *p; (p = DCMA_GetEntry(hDCMA, i)) != NULL; ++i)
DCMA_DestroyEntry(*p);
DSA_Destroy(hDCMA);
}
UINT DCMA_InsertMenuItems(
_In_ HDCMA hDCMA,
_In_ HDCIA hDCIA,
_In_opt_ LPCITEMIDLIST pidlFolder,
_In_opt_ IDataObject *pDO,
_In_opt_ HKEY *pKeys,
_In_opt_ UINT nKeys,
_In_ QCMINFO *pQCMI,
_In_opt_ UINT fCmf,
_In_opt_ IUnknown *pUnkSite)
{
UINT idCmdBase = pQCMI->idCmdFirst, idCmdFirst = idCmdBase;
UINT nOffset = 0;
// Insert in reverse order
for (int iCls = DCIA_GetCount(hDCIA) - 1; iCls >= 0; --iCls)
{
REFCLSID clsid = *DCIA_GetEntry(hDCIA, iCls);
if (fCmf & CMF_DEFAULTONLY)
{
WCHAR szKey[MAX_PATH];
wcscpy(szKey, L"CLSID\\");
StringFromGUID2(clsid, szKey + _countof(L"CLSID\\") - 1, CHARS_IN_GUID);
wcscpy(szKey + _countof(L"CLSID\\") - 1 + CHARS_IN_GUID - 1, L"\\shellex\\MayChangeDefaultMenu");
if (!RegKeyExists(HKEY_CLASSES_ROOT, szKey))
continue;
}
for (UINT iKey = 0; iKey < nKeys; ++iKey)
{
CComPtr<IShellExtInit> pInit;
HRESULT hr = SHExtCoCreateInstance(NULL, &clsid, NULL, IID_PPV_ARG(IShellExtInit, &pInit));
if (FAILED(hr))
break;
if (FAILED(hr = pInit->Initialize(pidlFolder, pDO, pKeys[iKey])))
continue;
IContextMenu *pCM;
if (FAILED(hr = pInit->QueryInterface(IID_PPV_ARG(IContextMenu, &pCM))))
break;
IUnknown_SetSite(pCM, pUnkSite);
hr = pCM->QueryContextMenu(pQCMI->hmenu, pQCMI->indexMenu + nOffset, idCmdFirst, pQCMI->idCmdLast, fCmf);
const UINT nCount = HRESULT_CODE(hr);
const UINT idThisFirst = idCmdFirst - idCmdBase;
DCMENTRY dcme = { pCM, idThisFirst, idThisFirst + nCount - 1 };
if (hr > 0)
{
idCmdFirst += nCount;
if (DSA_AppendItem(hDCMA, &dcme) >= 0)
{
if (nOffset == 0 && GetMenuDefaultItem(pQCMI->hmenu, TRUE, 0) == 0)
nOffset++; // Insert new items below the default
break;
}
}
DCMA_DestroyEntry(dcme);
}
}
return idCmdFirst;
}
HRESULT DCMA_InvokeCommand(HDCMA hDCMA, CMINVOKECOMMANDINFO *pICI)
{
HRESULT hr = S_FALSE;
for (UINT i = 0;; ++i)
{
DCMENTRY *p = DCMA_GetEntry(hDCMA, i);
if (!p)
return hr;
UINT id = LOWORD(pICI->lpVerb);
if (!IS_INTRESOURCE(pICI->lpVerb))
{
if (SUCCEEDED(hr = p->pCM->InvokeCommand(pICI)))
return hr;
}
else if (id >= p->idCmdFirst && id <= p->idCmdLast)
{
CMINVOKECOMMANDINFOEX ici;
CopyMemory(&ici, pICI, min(sizeof(ici), pICI->cbSize));
ici.cbSize = min(sizeof(ici), pICI->cbSize);
ici.lpVerb = MAKEINTRESOURCEA(id - p->idCmdFirst);
ici.lpVerbW = (PWSTR)ici.lpVerb;
return p->pCM->InvokeCommand((CMINVOKECOMMANDINFO*)&ici);
}
}
}
typedef struct _DynamicShellEntry_
{
UINT iIdCmdFirst;