Sending TVM_SETEXTENDEDSTYLE message

    DWORD dwExMask = TVS_EX_RICHTOOLTIP;
    // if m_bRichTooltip is true TVS_EX_RICHTOOLTIP is set
    // otherwise it is removed
    DWORD dwExStyles = m_bRichTooltip ? TVS_EX_RICHTOOLTIP : 0;
    
    HWND hWndTreeCtrl = ::GetDlgItem(hWndDlg, IDC_TREE_DEMO);
    ::SendMessage(hWndTreeCtrl, TVM_SETEXTENDEDSTYLE, (WPARAM)dwExMask, (LPARAM)dwExStyles);

DWORD dwExMask = TVS_EX_RICHTOOLTIP;

// if m_bRichTooltip is true TVS_EX_RICHTOOLTIP is set

// otherwise it is removed

DWORD dwExStyles = m_bRichTooltip ? TVS_EX_RICHTOOLTIP : 0;

HWND hWndTreeCtrl = ::GetDlgItem(hWndDlg, IDC_TREE_DEMO);

::SendMessage(hWndTreeCtrl, TVM_SETEXTENDEDSTYLE, (WPARAM)dwExMask, (LPARAM)dwExStyles);

Using TreeView_SetExtendedStyle macro

    UINT uExMask = TVS_EX_RICHTOOLTIP;
    // if m_bRichTooltip is true TVS_EX_RICHTOOLTIP is set
    // otherwise it is removed
    DWORD dwExStyles = m_bRichTooltip ? TVS_EX_RICHTOOLTIP : 0;

    HWND hWndTreeCtrl = ::GetDlgItem(hWndDlg, IDC_TREE_DEMO);
    TreeView_SetExtendedStyle(hWndTreeCtrl, dwExStyles, uExMask);

UINT uExMask = TVS_EX_RICHTOOLTIP;

// if m_bRichTooltip is true TVS_EX_RICHTOOLTIP is set

// otherwise it is removed

DWORD dwExStyles = m_bRichTooltip ? TVS_EX_RICHTOOLTIP : 0;

HWND hWndTreeCtrl = ::GetDlgItem(hWndDlg, IDC_TREE_DEMO);

TreeView_SetExtendedStyle(hWndTreeCtrl, dwExStyles, uExMask);

Calling CTreeCtrl::SetExtendedStyle (MFC)

void CWhateverDialog::_SetOrRemoveRichTooltipStyle()
{
    UpdateData();

    DWORD dwExMask = TVS_EX_RICHTOOLTIP;
    // if m_bRichTooltip is true TVS_EX_RICHTOOLTIP is set
    // otherwise it is removed
    DWORD dwExStyles = m_bRichTooltip ? TVS_EX_RICHTOOLTIP : 0;

    m_treeCtrl.SetExtendedStyle(dwExMask, dwExStyles);
}

void CWhateverDialog::_SetOrRemoveRichTooltipStyle()

{

UpdateData();

DWORD dwExMask = TVS_EX_RICHTOOLTIP;

// if m_bRichTooltip is true TVS_EX_RICHTOOLTIP is set

// otherwise it is removed

DWORD dwExStyles = m_bRichTooltip ? TVS_EX_RICHTOOLTIP : 0;

m_treeCtrl.SetExtendedStyle(dwExMask, dwExStyles);

}

Further, let’s use the above code and see what’s happen.

The effect of TVS_EX_RICHTOOLTIP style

By default, if the mouse pointer hovers a partially visible tree item, a tootip containing the item’s text is shown.

Tree item tooltip – TVS_EX_RICHTOOLTIP not set

If the TVS_EX_RICHTOOLTIP style is set, then the tooltip displays the item’s icon in addition to the item’s text.

Tree item tooltip – TVS_EX_RICHTOOLTIP set

Note that TVS_EX_RICHTOOLTIP has no effect if TVS_INFOTIP style is set. In this case, the tooltip shows the text provided in TVN_GETINFOTIP notification handler and no icon. So far, that’s all I found about it. If somebody can reveal more, please do not hesitate to leave a reply!

First two articles in this series show how to deal with a large number of selected items, by manipulating the OPENFILENAME::lpstrFile buffer, either for old style or Vista-style Open File dialogs. However, if the target system is Windows Vista or newer, we should prefer getting rid of old stuff and use only Vista-style dialogs.
So, let’s cut the dog’s tail as fast and painless as possible!

Using IFileOpenDialog to collect the results

Example 5

void CWhateverClass::OnFileOpen()
{
   CFileDialog dlgOpenFile(TRUE);
   dlgOpenFile.GetOFN().Flags |= OFN_ALLOWMULTISELECT;

   if(IDOK == dlgOpenFile.DoModal())
   {
      IFileOpenDialog* pIFileOpenDialog = dlgOpenFile.GetIFileOpenDialog();
      ASSERT(NULL != pIFileOpenDialog);

      CComPtr<IShellItemArray> pIShellItemArray;
      HRESULT hr = pIFileOpenDialog->GetResults(&pIShellItemArray); 
      if(SUCCEEDED(hr))
      {
         DWORD dwItemCount = 0;
         hr = pIShellItemArray->GetCount(&dwItemCount);
         ASSERT(SUCCEEDED(hr));
         for(DWORD dwItem = 0; dwItem < dwItemCount; dwItem++)          
         {
            CComPtr<IShellItem> pIShellItem;
            pIShellItemArray->GetItemAt(dwItem, &pIShellItem);

            LPWSTR pszFilePath = NULL;
            hr = pIShellItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
            if(SUCCEEDED(hr))
            {
               CString strFilePath(pszFilePath);
               // ...do something with strFilePath...
               ::CoTaskMemFree(pszFilePath);
            }
         }
      }
      pIFileOpenDialog->Release(); // release IFileOpenDialog
   }
}

void CWhateverClass::OnFileOpen()

{

CFileDialog dlgOpenFile(TRUE);

dlgOpenFile.GetOFN().Flags |= OFN_ALLOWMULTISELECT;

if(IDOK == dlgOpenFile.DoModal())

{

IFileOpenDialog* pIFileOpenDialog = dlgOpenFile.GetIFileOpenDialog();

ASSERT(NULL != pIFileOpenDialog);

CComPtr<IShellItemArray> pIShellItemArray;

HRESULT hr = pIFileOpenDialog->GetResults(&pIShellItemArray);

if(SUCCEEDED(hr))

{

DWORD dwItemCount = 0;

hr = pIShellItemArray->GetCount(&dwItemCount);

ASSERT(SUCCEEDED(hr));

for(DWORD dwItem = 0; dwItem < dwItemCount; dwItem++)

{

CComPtr<IShellItem> pIShellItem;

pIShellItemArray->GetItemAt(dwItem, &pIShellItem);

LPWSTR pszFilePath = NULL;

hr = pIShellItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);

if(SUCCEEDED(hr))

{

CString strFilePath(pszFilePath);

// ...do something with strFilePath...

::CoTaskMemFree(pszFilePath);

}

pIFileOpenDialog->Release(); // release IFileOpenDialog

}

This time, we’ve used Common Item Dialog API (IFileOpenDialog interface and so on) instead of the “classic” CFileDialog::GetStartPosition and CFileDialog::GetNextPathName. That allows to step beyond the old stuff limits without overriding any CFileDialog method and without doing any other type of “dancing on the rope”.

Demo application

Vista File Open Dialog with Multiple Selection – Demo

The demo application demonstrates how to grab File Open dialog results by using Common Item Dialog API. For demo/testing purpose it has also a function which uses the old way of CFileDialog::GetNextPathName. Just uncheck “Use IFileOpenDialog”, push “Open…” button, select a large number of items from the open file dialog list, then see the difference.

Demo project download: Vista File Open Dialog with Multiple Selection (1275)

Notes

Common Item Dialog API is supported on Windows Vista and newer.
CFileDialog with Vista style is implemented in Visual Studio 2008 and newer.
Of course may be also other solutions. For example, someone still would prefer to derive from CFileDialog in order to put all COM stuff in a single place, for making others’ life easier.
For any constructive remark or alternative solution(s), please do not hesitate and leave a comment!

Resources

MSDN and Windows Dev Center (see the links in the previous articles).

codexpert blog

I see native code

Tag Archives: vista

Tree-View Control – TVS_EX_RICHTOOLTIP style

How to set and remove TVS_EX_RICHTOOLTIP style

Sending TVM_SETEXTENDEDSTYLE message

Using TreeView_SetExtendedStyle macro

Calling CTreeCtrl::SetExtendedStyle (MFC)

The effect of TVS_EX_RICHTOOLTIP style

Downloads

Resources

Like this:

File Open Dialog with Multiple Selection – Part 3: Cutting the Dog Tail

Using IFileOpenDialog to collect the results

Demo application

Notes

Resources

See also

Like this:

How to set and remove TVS_EX_RICHTOOLTIP style

Sending TVM_SETEXTENDEDSTYLE message

Using TreeView_SetExtendedStyle macro

Calling CTreeCtrl::SetExtendedStyle (MFC)

The effect of TVS_EX_RICHTOOLTIP style

Downloads

Resources

Share this:

Like this:

Using IFileOpenDialog to collect the results

Demo application

Notes

Resources

See also

Share this:

Like this: