Parsing WMIC output

Question

I have a BAT script that is supposed to read the current screen resolution to variables. I get the screen resolution with the wmic desktopmonitor get screenwidth /value

Answer 1

echo var: %screenwidth% <--- You can't set and use a variable within a loop without some special techniques, like delayed expansion.

Does this do what you need?

@echo off
set "screenwidth="
for /F "tokens=2 delims==" %%F in ('wmic desktopmonitor get screenwidth /value') do (
    if not defined screenwidth set screenwidth=%%F
)
pause