ShellExecuteEx function always returning error code 5 (C++)

问题

I need to start a process and have access to the PID, so I am trying to use ShellExecuteEx. I am attempting to open a batch file. However, no matter how I pass the parameters and no matter where the file is located and what permission's I have on the file, the function is returning with Error Code 5: Access is denied.

The File is located in the same location as the config files that have already been read successfully.
The File is set for full access permissions with any user.
It does this with any file type. I've tried just opening text files with the same outcome (Error 5)
If I use ShellExecute() instead, the batch file is run successfully.

Here is some of the code I've tried:

SHELLEXECUTEINFO exInfo;
exInfo.cbSize = sizeof(SHELLEXECUTEINFO);
exInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
exInfo.lpVerb = "open";
exInfo.lpFile = "C:\\batchtest.bat";
exInfo.nShow = SW_NORMAL;
BOOL hReturnCode = ShellExecute(&exInfo);
DWORD LastError = GetLastError();

I've also tried:

SHELLEXECUTEINFO exInfo;
exInfo.cbSize = sizeof(SHELLEXECUTEINFO);
exInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
exInfo.lpVerb = "open";
exInfo.lpFile = "C:\\Windows\\system32\\cmd.exe";
exInfo.lpParameters = "batchtest.bat";

And many variations of the above.

Also, I've tried something really simple like from here: Get PID from ShellExecute

to no avail.

However this:

ShellExecute(NULL, "open", "C:\\testbat.bat", NULL, NULL, SW_SHOWNORMAL);

works without an error. Unfortunately, I need the PID, so I can't use ShellExecute.

Any suggestions would be greatly appreciated. I feel like I've exhausted all of my options.

Environment: VS 2008 Windows 7

EDIT: fixed the code to "C:\batchtest.bat"; as suggested. (Still same result)

回答1:

Figured it out.
In order to run batch file and I guess some other types of exe's on Windows 7, you have to elevate the call using the lpVerb = _TEXT("runas") -- even if you have UAC turned off. This isn't documented in the SHELLEXECUTEINFO structure documentation on MDSN (it isn't even given as an option), since it says: "The following verbs are commonly used" The final code was as follows:

SHELLEXECUTEINFO exInfo;
exInfo.cbSize = sizeof(SHELLEXECUTEINFO);
exInfo.fMask = SEE_MASK_NOCLOSEPROCESS; //allows the PID to be returned
exInfo.hwnd = NULL;
exInfo.lpVerb =  _TEXT("runas"); //elevates for Windows 7
exInfo.lpFile = "C:\\BatchTest.bat";
exInfo.lpParameters = NULL;
exInfo.nShow = SW_MAXIMIZE;
exInfo.hInstApp = NULL;
exInfo.lpDirectory = NULL;
BOOL hReturnCode = ShellExecuteEx(&exInfo);

I hope that helps others out.

回答2:

Shouldn't the line

exInfo.lpFile = "C:\\batchtest.exe";

exInfo.lpFile = "C:\\batchtest.bat";

来源：https://stackoverflow.com/questions/24761582/shellexecuteex-function-always-returning-error-code-5-c

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