C / C++ / MFC

Member 4063274 wrote:

whether we need to call TrackPopupMenu() method in COMMAND UI event handler?

Member 4063274 wrote:

But i want to toggle the state in COMMAND event handler(by clicking).

void CTestDlg::OnInitMenuPopup(CMenu *pPopupMenu, UINT nIndex,BOOL bSysMenu)
{
    ASSERT(pPopupMenu != NULL);
    // Check the enabled state of various menu items.

    CCmdUI state;
    state.m_pMenu = pPopupMenu;
    ASSERT(state.m_pOther == NULL);
    ASSERT(state.m_pParentMenu == NULL);

    // Determine if menu is popup in top-level menu and set m_pOther to
    // it if so (m_pParentMenu == NULL indicates that it is secondary popup).
    HMENU hParentMenu;
    if (AfxGetThreadState()->m_hTrackingMenu == pPopupMenu->m_hMenu)
        state.m_pParentMenu = pPopupMenu;    // Parent == child for tracking popup.
    else if ((hParentMenu = ::GetMenu(m_hWnd)) != NULL)
    {
        CWnd* pParent = this;
           // Child windows don't have menus--need to go to the top!
        if (pParent != NULL &&
           (hParentMenu = ::GetMenu(pParent->m_hWnd)) != NULL)
        {
           int nIndexMax = ::GetMenuItemCount(hParentMenu);
           for (int nIndex = 0; nIndex < nIndexMax; nIndex++)
           {
            if (::GetSubMenu(hParentMenu, nIndex) == pPopupMenu->m_hMenu)
            {
                // When popup is found, m_pParentMenu is containing menu.
                state.m_pParentMenu = CMenu::FromHandle(hParentMenu);
                break;
            }
           }
        }
    }

    state.m_nIndexMax = pPopupMenu->GetMenuItemCount();
    for (state.m_nIndex = 0; state.m_nIndex < state.m_nIndexMax;
      state.m_nIndex++)
    {
        state.m_nID = pPopupMenu->GetMenuItemID(state.m_nIndex);
        if (state.m_nID == 0)
           continue; // Menu separator or invalid cmd - ignore it.

        ASSERT(state.m_pOther == NULL);
        ASSERT(state.m_pMenu != NULL);
        if (state.m_nID == (UINT)-1)
        {
           // Possibly a popup menu, route to first item of that popup.
           state.m_pSubMenu = pPopupMenu->GetSubMenu(state.m_nIndex);
           if (state.m_pSubMenu == NULL ||
            (state.m_nID = state.m_pSubMenu->GetMenuItemID(0)) == 0 ||
            state.m_nID == (UINT)-1)
           {
            continue;       // First item of popup can't be routed to.
           }
           state.DoUpdate(this, TRUE);   // Popups are never auto disabled.
        }
        else
        {
           // Normal menu item.
           // Auto enable/disable if frame window has m_bAutoMenuEnable
           // set and command is _not_ a system command.
           state.m_pSubMenu = NULL;
           state.DoUpdate(this, FALSE);
        }

        // Adjust for menu deletions and additions.
        UINT nCount = pPopupMenu->GetMenuItemCount();
        if (nCount < state.m_nIndexMax)
        {
           state.m_nIndex -= (state.m_nIndexMax - nCount);
           while (state.m_nIndex < nCount &&
            pPopupMenu->GetMenuItemID(state.m_nIndex) == state.m_nID)
           {
            state.m_nIndex++;
           }
        }
        state.m_nIndexMax = nCount;
    }
}

BEGIN_MESSAGE_MAP(CTestDlg, CDialog)
	//}}AFX_MSG_MAP

	ON_WM_INITMENUPOPUP()
END_MESSAGE_MAP()

void CTestDlg::OnButton1()
{
	x = 0;
}

void CTestDlg::OnUpdateButton1(CCmdUI *pCmdUI)
{
	if(x == 0)
	{
		pCmdUI->SetCheck(1);
	}
	else
	{
		pCmdUI->SetCheck(0);
	}
}

void CTestDlg::OnButton2()
{
	x = 1;
}

void CTestDlg::OnUpdateButton2(CCmdUI *pCmdUI)
{
	if(x == 1)
	{
		pCmdUI->SetCheck(1);
	}
	else
	{
		pCmdUI->SetCheck(0);
	}
}

CPoint p(GetMessagePos());

CMenu _menu;
_menu.LoadMenu(IDR_MENU1);

CMenu* pPopup = _menu.GetSubMenu(0);

pPopup->TrackPopupMenu(TPM_LEFTALIGN|TPM_RIGHTBUTTON, p.x, p.y, this);

<br />
  <br />
  UINT state = submenu->GetMenuState(ID_TEST_MAINSTREAM, MF_BYCOMMAND);<br />
<br />
  if (state & MF_CHECKED)<br />
  {<br />
      nRet = submenu->CheckMenuItem(2,MF_BYPOSITION |MF_UNCHECKED);	<br />
  }<br />
    else<br />
    {<br />
	nRet = submenu->CheckMenuItem(2, MF_BYPOSITION|MF_CHECKED);<br />
    }<br />
	<br />
   UINT state2 = submenu->GetMenuState(2, MF_BYPOSITION);<br />
<br />

Member 4063274 wrote:

I used

CheckMenuItem() method. But it is not working .

Jach Mullan wrote:

enumerate the taskbar icons(system tray) using win32 and there will be always a way to do that but which shell options to use or if somebody can link me to such topics that will nice