Exec vs ExecWait vs ExecShell vs nsExec::Exec vs nsExec::ExecToLog vs nsExec::ExecToStack vs ExecDos vs ExeCmd

1) 2) 3)

Exec and ExecWait use CreateProcess internally and can only start programs and batch files.

ExecShell uses ShellExecute which means that it can also launch any registered filetype (.txt .chm etc) and URLs. It should also be used if the program you are starting needs to elevate with UAC.

4)

nsExec redirects stdout so a console window is not visible when the child process executes. And yes, it waits.

5)

The log window on the instfiles page.

7)

Yes, both ExecDos and ExecCmd are more advanced versions of nsExec.

8)

Correct