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Subject: | Re: Windowless Perl |
To: | The Cygwin Mailing List <cygwin AT cygwin DOT com> |
References: | <5eebff75b1f37a968325ed4fc7dce3a8 AT plebeian DOT com> <87a7epgs5t DOT fsf AT Rainer DOT invalid> <3a0322aa51937847ea35009b77c1aa34 AT plebeian DOT com> <5CFFEF09 DOT 6010805 AT tlinx DOT org> <1581789244 DOT 20190618182709 AT yandex DOT ru> |
From: | Jon Turney <jon DOT turney AT dronecode DOT org DOT uk> |
Message-ID: | <dcdead25-3ee4-e3c1-ffe8-4feeabab34d0@dronecode.org.uk> |
Date: | Tue, 18 Jun 2019 19:15:20 +0100 |
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In-Reply-To: | <1581789244.20190618182709@yandex.ru> |
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. 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." -- 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
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