c++ - IFileDialog / IShellItem::GetDisplayName doesn't work with Windows 7 libraries -

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ifiledialog *pfd; ... cocreateinstance(clsid_fileopendialog,null,    clsctx_inproc_server,iid_ppv_args(&pfd)); ... ishellitem *psiresult; pfd->getresult(&psiresult); ... wchar_t *filepath; psiresult->getdisplayname(sigdn_filesyspath,&filepath); ...

this works regular files fails (e_invalidarg) when file fetched via windows 7 library folder (the same file work when accessed via it's normal path). doc says :

sigdn_filesyspath (returns item's file system path, if has one. items report sfgao_filesystem have file system path. when item not have file system path, call ishellitem::getdisplayname on item fail. in ui name suitable display user in cases, note might not specified items.

but using sigdn_normaldisplay or others sigdn enumeration fails too.

so how full path when file fetched via windows 7 libraries ?

edit 1

i can folder via :

ishellitem *psiresult; pfd->getfolder(& psiresult);  lpwstr folderpath = null;  psiresult->getdisplayname(sigdn_filesyspath, & folderpath);

but getdisplayname() doesn't work pfd->getresult(& psiresult);

edit 2

i found not working, in coinitializeex. used coinit_multithreaded, if change coinit_apartmentthreaded works.

try calling

pfd->setoptions(dwoptions | fos_forcefilesystem | fos_pathmustexist);

before showing dialog. works me.


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