FIX: Internal State of ControlBars Corrupted

MORE INFORMATION

There are two ways to get information into a CDockState object:

• Call the CDockState::LoadState to load the state of the controlbars from the Registry or .INI file.
• Use the CFrameWnd::GetDockState.

To save the state to the Registry or .INI file, use CDockState::SaveState. Use CFrameWnd::SetDockState to set the state of the controlbars at run time.

The following code was added to the Docktool sample. This code saves the non-corrupted controlbar information to the .INI file:

   void CMainFrame::OnClose()
   {
       // SaveBarState saves everything but the number of Columns in
       // the Palette we need to do that ourselves.
       SaveBarState(_T("General"));


   // Following code was added to the sample with Visual C++ 4.1
   #if _MFC_VER == 0x0400 || _MFC_VER == 0x0410

       CDockState state;
       GetDockState(state);

       CleanUpControlBarState(state);

       state.SaveState(_T("General"));

   #endif
   ...
				

Sample Code

// In this case the function is defined as a global function.
// You could make it a member of one of your classes

Add the following prototype to the end of your stdafx.h:

#if _MFC_VER == 0x0400 || _MFC_VER == 0x0410

void CleanUpControlBarState(CDockState& state);

#endif

and add the following code to one of your CPP files:

#if _MFC_VER == 0x0400 || _MFC_VER == 0x0410
void CleanUpControlBarState(CDockState& state)
{

    for (int i = 0; i < state.m_arrBarInfo.GetSize(); i++)
    {
        CControlBarInfo* pInfo1 = (CControlBarInfo*)state.m_arrBarInfo[i];

        for (int j = 0; j < state.m_arrBarInfo.GetSize(); j++)
        {
            if (i == j)
                continue;

            CControlBarInfo* pInfo2 =
                (CControlBarInfo*)state.m_arrBarInfo[j];

            if (pInfo1->m_uMRUDockID == pInfo2->m_nBarID)
                continue;

            int nSize = pInfo2->m_arrBarID.GetSize();
            for (int k = 0; k < nSize - 1; k++)
            {
                if ((LONG)pInfo2->m_arrBarID[k] ==
                    (LONG)pInfo1->m_nBarID + 0x10000)

                    pInfo2->m_arrBarID[k] = NULL;
            }
        }
    }

    for (i = 0; i < state.m_arrBarInfo.GetSize(); i++)
    {
        CControlBarInfo* pInfo = (CControlBarInfo*)state.m_arrBarInfo[i];

        int nSize = pInfo->m_arrBarID.GetSize();
        for (int j = 0; j < nSize - 1; j++)
        {
            if (pInfo->m_arrBarID[j]==NULL)
                continue;

            for (int k = j + 1; k < nSize; k++)
            {
                if (pInfo->m_arrBarID[k]==NULL)
                    continue;

                if (pInfo->m_arrBarID[k]==pInfo->m_arrBarID[j])
                    pInfo->m_arrBarID[k] = NULL;
            }
        }

        while ((nSize!=0) && (pInfo->m_arrBarID[nSize-1]==NULL))
        {
            nSize--;
            pInfo->m_arrBarID.RemoveAt(nSize);
        }
        if (nSize)
            pInfo->m_arrBarID.InsertAt(nSize, (void*)NULL);
    }
}

#endif
				

NOTE: The sample code above uses undocumented functionality of the MFC. To be compatible with future versions of MFC, enclose the code between the following directives:

   #if _MFC_VER == 0x0400 || _MFC_VER == 0x0410
   ...
   ...
   #endif
				

Also include any call to CleanUpControlBarState between these directives.