shell.exec("a.txt")
will open a windows (notepad) to edit the file
a.txt
in windows system. However, the notepad will block the (parent)
active R windows, i.e. SW.cmd = 5
as SH_SHOW
by default.
The shellexec.wcc("a.txt", SW.cmd = 7L)
will open the notepad, but in
a minimized window. Therefore, there is no blocking to the active R windows.
See the website in the references section to see more options to control the
behavior of new windows. Possible choices are
SW_SHOW (5)
: Activates the window and displays it in its current size
and position.
SW_SHOWMINIMIZED (2)
: Activates the window and displays it as a
minimized window.
SW_SHOWMINNOACTIVE (7)
: Displays the window as a minimized window.
The active window remains active.
SW_SHOWNA (8)
: Displays the window in its current state. The active
window remains active.