Files disappear in Explorer when DEL fails

May 20, 2008
Syracuse, NY, USA
I gave the command "del *.txt" in my temp folder and got
del *.txt
Deleting T:\FXSAPIDebugLogFile.txt
TCC: (Sys) The process cannot access the file because it is being used by another process.
Deleting T:\FXSTIFFDebugLogFile.txt
TCC: (Sys) The process cannot access the file because it is being used by another process.
    0 files deleted      2 failed
I was watching an Explorer window and they disappeared. They weren't really deleted because a refresh (F5) of the Explorer window brought them back.

When I try it with CMD I get the same error messages and the files DO NOT disappear from the Explorer window! Likewise with TCSH and PowerShell ... error messages and the files DO NOT disappear from the Explorer window.

Is there any speculation why they disappear with TCC and not with other shells?
May 20, 2008
Syracuse, NY, USA
Hmmm! It doesn't happen when I do this (below). I get the expected "32" (file in use) and the file does not disappear from the Explorer window. Can you give me more information? I'd like to reproduce this one.
INT wmain ( INT argc, LPWSTR *argv )
    SHFILEOPSTRUCT fos = {NULL, FO_DELETE, L"t:\\FXSAPIDebugLogFile.txt\0", NULL, FOF_NO_UI, 0};
    wprintf(L"%d\n", SHFileOperation(&fos));
    return 0;
May 20, 2008
Syracuse, NY, USA
TCC is using different arguments.

Try it with _wremove() and DeleteFile() and see if it behaves the same way.

(I am not able to reproduce it here with Windows 8.)
I cannot reproduce the odd behavior at all with a test app ... not with SHFileOperation (as above), not with _wremove, not with DeleteFile. In a test app all three give the appropriate access/in_use error and the file does not disappear from the Explorer window.

You said TCC uses SHFileOperation. What args do you use?

But I am having a difficulty with SHFileOperation that I don't understand and can't get rid of. With the code I posted (plus a couple of printf/GetTickCounts) I see a (nearly exactly) 1 second delay during the execution of SHFileOperation. If the file can be (and is) deleted, there's no delay.

In a little bit of experimenting, all I've said above remains the same if I try SHFileOperation in a plugin (specifying the console window with all else the same).

So I still have two questions. Why does doing it with TCC cause the file to disappear from an Explorer window and why do get a 1 second delay from SGFileOperation?
May 20, 2008
Syracuse, NY, USA
FWIW, the same odd behavior (files not deleted disappearing from an Explorer window) also happens with v14 and does not happen with v13, v12, or v11.
And it happens when TCC is started with /IP /II /IS.
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