Cascade submenus inside context menu shell extension with c++ - c++

Question

Hello i'm trying to get cascade window inside context menu in shell extension. I add two submenus inside context menu of .dll extension, but want to make one cascade submenu (i like to open first menu and after clicking on some menu inside, want to open next submenu).
How to get cascade submenus from this code, where did i make mistake?
// 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;
}
}

Answer 1

After some time found solution for making cascade context menu inside of existing context menu ... here is code:
// 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 hSub = 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") );
InsertMenu ( hSub, 4, MF_BYPOSITION, uID++, _T("&Case") );
InsertMenu ( hSub, 5, MF_BYPOSITION, uID++, _T("&Case") );
// 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("Open With&x");
InsertMenuItem ( hmenu, uMenuIndex, TRUE, &mii );
mii.hSubMenu = hSub;
mii.dwTypeData = _T("Novi Subm&enu");
InsertMenuItem ( hSubmenu, uMenuIndex, TRUE, &mii );
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 > 4 )
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 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 = szPopText;
}
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 4:
{
MessageBox(0, "New command from sub menu", "Case 4", 0);
return S_OK;
}
break;
case 5:
{
MessageBox(0, "New second command from sub menu", "Case 5", 0);
return S_OK;
}
break;
default:
return E_INVALIDARG;
break;
}
}