On 2019-06-18 12:15, Jon Turney wrote: > On 18/06/2019 16:27, Andrey Repin wrote: >>> On 2019/06/10 13:12, Chris Wagner wrote: >>>> I didn't know about run, thanks for the tip. However when I use it to >>>> launch something from the Start Menu Run command, it still pops open a >>>> terminal window of some kind for a fraction of a second. I'm on >>>> Windows 7. >>> Windows has a flag set in each EXE as to whether or not it is a console >>> or GUI program. There are tools that can set the flag in a given EXE >>> file. >> It's not a flag, it's an exported function. >> If a program exports winmain(), it's a gui program, if it exports main(), >> it's a console program. > No. It really is a flag.
Strictly speaking a field flag value: $ objdump -x $(dirname $(cygpath $COMSPEC))/csrss | grep -w '^Subsystem' Subsystem 00000001 (NT native) $ objdump -x /setup | grep -w '^Subsystem' Subsystem 00000002 (Windows GUI) $ objdump -x /bin/cygwin1.dll | grep -w '^Subsystem' Subsystem 00000003 (Windows CUI) > See > https://docs.microsoft.com/en-us/windows/desktop/debug/pe-format#windows-subsystem > You are describing the behaviour of (recent versions of) the Microsoft linker, > which guesses the default value of this flag based on what symbols are defined > See > https://docs.microsoft.com/en-us/cpp/build/reference/entry-entry-point-symbol, > specifically the sentence "If the /DLL or /SUBSYSTEM option is not specified, > the linker selects a subsystem and entry point depending on whether main or > WinMain is defined." -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
