等待ShellExecuteEx（在Windows进程上设置访问权限）

Question

I'm using the ShellExecuteEx function in a C++ program to launch an Uninstall.lnk file. In my program, I'd like to wait for the uninstaller to finish. My first attempt was to set the SEE_MASK_NOCLOSEPROCESS flag in the SHELLEXECUTEINFO structure and then call WaitForSingleObject on the hProcess handle available in the SHELLEXECUTEINFO structure passed to ShellExecuteEx , but that still seemed to return way too early.

My current suspicion is that this is because the process launched by ShellExecuteEx (does it launch a new shell?) creates new child processes, but doesn't wait for them. So I'm trying to create a "wait for my child process and all the children it launches" function. To do so, I'm trying to use job objects.

I created a job object using CreateJobObject , assigned the process handle returned by ShellExecuteEx to the job and then attempted to wait for the job object. Unfortunately assigning the process to the job failed, and I think this is due to insufficient access rights.

Does anybody know how to set the PROCESS_SET_QUOTA and PROCESS_TERMINATE access rights (which are required for AssignProcessToJobObject to succeed, according to the MSDN) on a process handle, or another way to wait for the process launched by ShellExecuteEx to finish?

I should point out that I'm also launching other applications, not just Uninstall.lnk . One of them is eg a ClickOnce application, which is effectively a simple XML file with the file extension .application .

Answer 1

Vista uses job objects for launching links. Therefor the process you try to assign to another job object might already be assigned.

See: this question

Answer 2

Why not to execute target file instead of openning Uninstall.lnk ? You could use IShellLink to get shortcut target. Then you'll be able to execute target file via ShellExecuteEx using SEE_MASK_NOCLOSEPROCESS flag.