Programmatically pre-select using IFileDialog in C++ - c++

Question

I am perplexed on whether IFileDialog has the capability of programmatically selecting an item inside the dialog even with out the user selecting.
Ex.
I was hoping to achieve opening IFileDialog then selecting a default item/folder inside the dialog.
Ex.
By the way, in the picture above. I did manually click/select the folder.
But I was hoping to implement a defaultly selected item inside the IFileDialog.

Answer 1

The procedure suggested by zett42 works. You need to implement your own version of IFileDialogEvents. After hooking with IFileDialog::Advise you can query your way to IShellView and that lets you change the selection.
This example is a little silly because I'm forcing the directory as well to be sure I have a file I can select.
struct MyIFileDialogEvents : public IFileDialogEvents {
bool forcedDir, forcedSel;
MyIFileDialogEvents() : forcedDir(false), forcedSel(false) {}
...
};
STDMETHODIMP MyIFileDialogEvents::OnFolderChanging( IFileDialog *pfd, IShellItem*psiFolder)
{
if (forcedDir) return S_OK; else forcedDir = true;
IShellItem*psiwindir;
HRESULT hr = SHGetKnownFolderItem(FOLDERID_Windows, KF_FLAG_DEFAULT, NULL, IID_IShellItem, (void**) &psiwindir);
if (!hr)
{
hr = pfd->SetFolder(psiwindir); // MSDN says it is OK to change the folder in OnFolderChanging with SetFolder
psiwindir->Release();
}
if (FAILED(hr)) forcedSel = true;
return S_OK;
}
STDMETHODIMP MyIFileDialogEvents::OnFolderChange(IFileDialog *pfd)
{
if (forcedSel || !forcedDir) return S_OK; else forcedSel = true;
IShellItem*psiwindir, *psiexp;
HRESULT hr = SHGetKnownFolderItem(FOLDERID_Windows, KF_FLAG_DEFAULT, NULL, IID_IShellItem, (void**) &psiwindir);
if (!hr)
{
hr = SHCreateItemFromRelativeName(psiwindir, L"Explorer.exe", NULL, IID_IShellItem, (void**) &psiexp);
psiwindir->Release();
if (!hr)
{
IServiceProvider*pSP;
IShellBrowser*pSB;
IShellView*pSV;
if (!pfd->QueryInterface(IID_IServiceProvider, (void**) &pSP))
{
if (!pSP->QueryService(SID_STopLevelBrowser, IID_IShellBrowser, (void**)&pSB))
{
if (!pSB->QueryActiveShellView(&pSV))
{
PIDLIST_ABSOLUTE pidl;
if (!SHGetIDListFromObject(psiexp, &pidl))
{
pSV->SelectItem(ILFindLastID(pidl), SVSI_SELECT|SVSI_ENSUREVISIBLE|SVSI_FOCUSED|SVSI_DESELECTOTHERS);
CoTaskMemFree(pidl);
}
pSV->Release();
}
pSB->Release();
}
pSP->Release();
}
psiexp->Release();
}
}
return S_OK;
}