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你好，我試圖在外殼擴展中的上下文菜單中獲得級聯窗口。我在.dll擴展的上下文菜單中添加了兩個子菜單，，但想要創建一個級聯子菜單（我喜歡打開第一個菜單，並在點擊某個菜單後想打開下一個子菜單）。C++的上下文菜單外殼擴展中的級聯子菜單
如何從此代碼獲取級聯子菜單，我在哪裏犯錯？
// OpenWithCtxMenuExt.cpp : Implementation of COpenWithCtxMenuExt
#include "stdafx.h"
#include "OpenWithExt.h"
#include "OpenWithCtxMenuExt.h"
#pragma comment(lib,"shlwapi")
/////////////////////////////////////////////////////////////////////////////
// COpenWithCtxMenuExt
HRESULT COpenWithCtxMenuExt::Initialize (LPCITEMIDLIST pidlFolder,
LPDATAOBJECT pDataObj,
HKEY hProgID)
{
FORMATETC fmt = { CF_HDROP, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
STGMEDIUM stg = { TYMED_HGLOBAL };
HDROP hDrop;
// Look for CF_HDROP data in the data object.
if (FAILED(pDataObj->GetData (&fmt, &stg)))
{
// Nope! Return an "invalid argument" error back to Explorer.
return E_INVALIDARG;
}
// Get a pointer to the actual data.
hDrop = (HDROP) GlobalLock (stg.hGlobal);
// Make sure it worked.
if (NULL == hDrop)
return E_INVALIDARG;
// Sanity check - make sure there is at least one filename.
UINT uNumFiles = DragQueryFile (hDrop, 0xFFFFFFFF, NULL, 0);
if (0 == uNumFiles)
{
GlobalUnlock (stg.hGlobal);
ReleaseStgMedium (&stg);
return E_INVALIDARG;
}
HRESULT hr = S_OK;
// Get the name of the first file and store it in our member variable m_szFile.
if (0 == DragQueryFile (hDrop, 0, m_szSelectedFile, MAX_PATH))
hr = E_INVALIDARG;
else
{
// Quote the name if it contains spaces (needed so the cmd line is built properly)
PathQuoteSpaces (m_szSelectedFile);
}
GlobalUnlock (stg.hGlobal);
ReleaseStgMedium (&stg);
return hr;
}
HRESULT COpenWithCtxMenuExt::QueryContextMenu (HMENU hmenu, UINT uMenuIndex,
UINT uidFirstCmd, UINT uidLastCmd,
UINT uFlags)
{
// If the flags include CMF_DEFAULTONLY then we shouldn't do anything.
if (uFlags & CMF_DEFAULTONLY)
return MAKE_HRESULT (SEVERITY_SUCCESS, FACILITY_NULL, 0);
// First, create and populate a submenu.
HMENU hSubmenu = CreatePopupMenu();
HMENU hSubmenu1 = CreatePopupMenu();
UINT uID = uidFirstCmd;
InsertMenu (hSubmenu, 0, MF_BYPOSITION, uID++, _T("&Notepad"));
InsertMenu (hSubmenu, 1, MF_BYPOSITION, uID++, _T("&Internet Explorer"));
InsertMenu (hSubmenu, 2, MF_BYPOSITION, uID++, _T("&Mspaint"));
InsertMenu (hSubmenu, 3, MF_BYPOSITION, uID++, _T("&Pop"));
// provjeriti uID da se ne zbraja
InsertMenu (hSubmenu1, 0, MF_BYPOSITION, uID++, _T("&Notepad"));
InsertMenu (hSubmenu1, 1, MF_BYPOSITION, uID++, _T("&Mspaint"));
// Insert the submenu into the ctx menu provided by Explorer.
MENUITEMINFO mii = { sizeof(MENUITEMINFO) };
mii.fMask = MIIM_SUBMENU | /*MIIM_STRING*/ 0x00000040 | MIIM_ID;
mii.wID = uID++;
mii.hSubMenu = hSubmenu;
mii.dwTypeData = _T("C&P Open With");
InsertMenuItem (hmenu, uMenuIndex, TRUE, &mii);
// Insert the submenu into the ctx menu provided by Explorer.
MENUITEMINFO mii1 = { sizeof(MENUITEMINFO) };
mii1.fMask = MIIM_SUBMENU | /*MIIM_STRING*/ 0x00000040 | MIIM_ID;
mii1.wID = uID++;
mii1.hSubMenu = hSubmenu;
mii1.dwTypeData = _T("C&P pod_folder");
InsertMenuItem (hmenu, uMenuIndex, TRUE, &mii1);
return MAKE_HRESULT (SEVERITY_SUCCESS, FACILITY_NULL, uID - uidFirstCmd);
}
HRESULT COpenWithCtxMenuExt::GetCommandString (UINT idCmd, UINT uFlags,
UINT* pwReserved, LPSTR pszName,
UINT cchMax)
{
USES_CONVERSION;
// Check idCmd, it must be 0 or 1 since we have two menu items.
if (idCmd > 3)
return E_INVALIDARG;
// If Explorer is asking for a help string, copy our string into the
// supplied buffer.
if (uFlags & GCS_HELPTEXT)
{
LPCTSTR szNotepadText = _T("Open the selected file in Notepad");
LPCTSTR szIEText = _T("Open the selected file in Internet Explorer");
LPCTSTR szPintText = _T("Open the selected file with Mspaint");
LPCTSTR szPopText = _T("Popout");
LPCTSTR szNotepad1Text = _T("Open the selected file in Notepad");
LPCTSTR szPint1Text = _T("Open the selected file with Mspaint");
//LPCTSTR pszText = (0 == idCmd) ? szNotepadText : szIEText;
LPCTSTR pszText;
if(idCmd == 0){
pszText = szNotepadText;
}
if(idCmd == 1){
pszText = szIEText;
}
if(idCmd == 2){
pszText = szPintText;
}
if(idCmd == 3){
pszText = szPopText;
}
if(idCmd == 4){
pszText = szNotepad1Text;
}
if(idCmd == 5){
pszText = szPint1Text;
}
if (uFlags & GCS_UNICODE)
{
// We need to cast pszName to a Unicode string, and then use the
// Unicode string copy API.
lstrcpynW ((LPWSTR) pszName, T2CW(pszText), cchMax);
}
else
{
// Use the ANSI string copy API to return the help string.
lstrcpynA (pszName, T2CA(pszText), cchMax);
}
return S_OK;
}
return E_INVALIDARG;
}
HRESULT COpenWithCtxMenuExt::InvokeCommand (LPCMINVOKECOMMANDINFO pCmdInfo)
{
// If lpVerb really points to a string, ignore this function call and bail out.
if (0 != HIWORD(pCmdInfo->lpVerb))
return E_INVALIDARG;
// Get the command index.
switch (LOWORD(pCmdInfo->lpVerb))
{
case 0:
{
ShellExecute (pCmdInfo->hwnd, _T("open"), _T("notepad.exe"),
m_szSelectedFile, NULL, SW_SHOW);
return S_OK;
}
break;
case 1:
{
ShellExecute (pCmdInfo->hwnd, _T("open"), _T("iexplore.exe"),
m_szSelectedFile, NULL, SW_SHOW);
return S_OK;
}
break;
case 2:
{
ShellExecute (pCmdInfo->hwnd, _T("open"), _T("mspaint.exe"),
m_szSelectedFile, NULL, SW_SHOW);
return S_OK;
}
break;
case 3:
{
ShellExecute (pCmdInfo->hwnd, _T("open"), _T("mspaint.exe"),
m_szSelectedFile, NULL, SW_SHOW);
return S_OK;
}
break;
case 4:
{
ShellExecute (pCmdInfo->hwnd, _T("open"), _T("notepad.exe"),
m_szSelectedFile, NULL, SW_SHOW);
return S_OK;
}
break;
case 5:
{
ShellExecute (pCmdInfo->hwnd, _T("open"), _T("mspaint.exe"),
m_szSelectedFile, NULL, SW_SHOW);
return S_OK;
}
break;
default:
return E_INVALIDARG;
break;
}
}
也許這將幫助你：http://www.codeproject.com /用品/ 3661 /操作方法 - 使用 - 子菜單-IN-A-上下文菜單殼EXTENS – mfc 2013-02-11 01:31:51