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Disable/Enable Menu Items and Sub Items

How do I disable and Enable Menu Items and Sub Items.

if(Selected == "drum" || Selected == "guitar" || Selected == "mic" || Selected == "computer" || Selected == "car" || Selected == "hockey" || Selected == "laptop" || Selected == "watch" )

{

      pCmdUI->Enable(Sort == 1);

}

The above code used to work before having sub menu items to that menu item. After adding sub menu items, the previous code works for sub menu items but it would not work for menu item. Can anyone please help me out with this as where am i going wrong? Thank you

Vicky

Re: Disable/Enable Menu Items and Sub Items

I have faced this problem before....
just go to the menu right click on it ,
say add event handler, Add the ONUpdate
event handler. U will have to enable
Every menu, Sub Menu OnUpdate event handler.
Then its quite simple use the pCMdUI->enable()
method to enable / Disable menu depending upon the condition.
The other method is to create a pop up menu , where the
enabling and disabling of menus will be simpler.
Hope i have solved u r problem , if not reply back here :)

Re: Disable/Enable Menu Items and Sub Items

Quote:

Originally Posted by koushal.vv (Post 742149)

I think I have already done that part and still it would not work. Below is the code to ensure that we are talking about the same part.

void CDeptView::OnSortManager()

{

        Selected = "MANAGER"; // Selected is a variable

       // Pulling out data from the access table

        m_pSet->m_strSort="[Managers].[ManagerName]";

        m_pSet->Requery();

        m_pSet->MoveFirst();

        UpdateData(FALSE);

}

void CDeptView::OnUpdateSortManager(CCmdUI *pCmdUI)

{

      // Setting a check to the menu item but it doesn't work now as   

         it has sub menu items

        pCmdUI->SetCheck(( m_SelectedSort == "MANAGER")? 1 : 0 );

      // Bellow is the condition when I want the menu item and its   

         sub item to be disabled.

         if(Selected == "drum" || Selected == "guitar" || Selected == "mic" || Selected == "computer" || Selected == "car" || Selected == "hockey" || Selected == "laptop" || Selected == "watch" )

        {

      pCmdUI->Enable(Sort == 1);

        }

}

This is how I have my code and it doesn't work. In a menu bar I have Sort. Under Sort I have Manager. Under Manager I have 2 other menu items. Before having thoes 2 menu items, Manager worked with check mark as well as disabling. After having sub menu items it wont. Can anyone help me out with it.

Vicky

Re: Disable/Enable Menu Items and Sub Items

So what u r saying is
first the menu looked like this

SORT
|
MANAGER

Here Enabling and Disabling of manager Menu can be done,
now u have updated the manager menu like this :

SORT
|
MANAGER --- SUBMENU1
--- SUBMENU2

here u will not be able to disable the MANAGER menu as u will not be able to add an Valid event for it. Since u have added the SUNBMENU's now , u can again create the ONUPDATE event for them, then try to put the same logic into them and disable both of the sub menus. Here in the MANAGER menu when u click on it no event will be generated. MANAGER menu will be now same as SORT menu where valid event handler's cant be added. hope this helps u .

Re: Disable/Enable Menu Items and Sub Items

Quote:

Originally Posted by koushal.vv (Post 742191)

Yes, that is correct. But I can disable Sort. The code for that is given below.

void CDept::DisableSort(void)

{

        CWnd* pParent = GetParent(); // This is a point to the window

         // This is a pointer to the menu on that window

        CMenu* pMenu = pParent->GetMenu();        

        

        if (m_pSet->GetRecordCount()==0) {

                MessageBox("Error", MB_ICONSTOP);

                // This disables the menu item in the 6th position which  

                    is  Sort

                pMenu->EnableMenuItem(5 , MF_BYPOSITION | MF_GRAYED );                

        }

        m_pSet->MoveFirst();

        pParent->DrawMenuBar(); // To redraw the menu

        OnSortEmployee(); // To reset the sort back to the “default condition”

}

But the question is how am i suppose to gray out or disable the menu item in the sort. Check out the code bellow

//(5) is the position of the sort, (MF_BYPOSITION ) is saying that it can be done by position of the Sort which is 5, (MF_GRAYED) means it grays out the SORT. 



pMenu->EnableMenuItem(5 , MF_BYPOSITION | MF_GRAYED );

Now the problem is I can not do the same thing for the sub menu of Sort. But I don't know the position for that. If there is another piece of code to get the job done, then I have no idea about it. This is where I am stuck.

Vicky

Re: Disable/Enable Menu Items and Sub Items

use the same logic for disabling the MANAGER menu also, Here u r graying it i think this shud also work for MANAGER. i will also try to write a dummy pgm and test this.

Re: Disable/Enable Menu Items and Sub Items

Quote:

Originally Posted by koushal.vv (Post 742214)

use the same logic for disabling the MANAGER menu also, Here u r graying it i think this shud also work for MANAGER. i will also try to write a dummy pgm and test this.

I tried it and it doesn't work for me. There must be a different set of code for that. First thing is I don't know the position of the Manager menu item. Second thing is I tried with the MF_BYCOMMAND (you can put IDC instead of position number) instead of MF_BYPOSITION and it still did not work. Hope to find a solution for this soon :-).

Vicky

Re: Disable/Enable Menu Items and Sub Items

Hope this works....

CMainFrame* pFrame ; // Memeber variable

pFrame = (CMainFrame*) AfxGetMainWnd(); 



pFrame->GetMenu()

->EnableMenuItem(ID_SORT_MANAGER,MF_GRAYED);

But make sure that u have set the m_bAutoMenuEnable = false;

Re: Disable/Enable Menu Items and Sub Items

Quote:

Originally Posted by koushal.vv (Post 742237)

Hope this works....

CMainFrame* pFrame ; // Memeber variable

pFrame = (CMainFrame*) AfxGetMainWnd(); 



pFrame->GetMenu()

->EnableMenuItem(ID_SORT_MANAGER,MF_GRAYED);

But make sure that u have set the m_bAutoMenuEnable = false;

The code that you provided here is not working. CMainFrame and pFrame is giving me errors and syntax errors too. Here is what I got right now and I still dont understand why is this not working

        CWnd* pParent = GetParent();

        CMenu* pMenu = pParent->GetMenu();

        CMenu* submenu = pMenu->GetSubMenu(0);

        submenu->EnableMenuItem(0, MF_BYPOSITION | MF_GRAYED );

Please help me out :(

Re: Disable/Enable Menu Items and Sub Items

Wouldn't it be easiest to add 'standard' ON_UPDATE_COMMAND_UI handlers for those two sub-menus, i.e. you'd have something along the lines of:

ON_UPDATE_COMMAND_UI(IDM_SUBMENU1, OnUpdateSubmenu1)

ON_UPDATE_COMMAND_UI(IDM_SUBMENU2, OnUpdateSubmenu2)

...

void SomeClass::OnUpdateSubmenu1(CCmdUI* pCmdUI)

{

    pCmdUI->Enable( ... )

}

void SomeClass::OnUpdateSubmenu2(CCmdUI* pCmdUI)

{

    pCmdUI->Enable( ... )

}

Re: Disable/Enable Menu Items and Sub Items

Thanks for helping me out guys. You are both right which difference piece of code provided. It wasn't this piece of code that was not letting me accomplish the job. I finally figured out where was I making a mistake :-) I am marking this thread as solved.

Vicky