That same executable behaves properly when built with cl.exe *or* run from cmd.
Only when built with cygwin gcc *and* run from cygwin shell does it not show the full string, and bonus, in that case does not set szCmdLine properly? #include <windows.h> #include <stdio.h> int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw) { char* text = GetCommandLine(); printf("getcmdline: %p %s\n", text, text); printf("szCmdLine: %p %s\n", szCmdLine, szCmdLine); return 0; } Built as a.exe by gcc, example.exe by cl $ ./a.exe x y z getcmdline: "C:\cygwin64\home\buildbot\a.exe" szCmdLine: $ ./example.exe x y z getcmdline: C:\cygwin64\home\buildbot\example.exe x y z szCmdLine: x y z $ cmd Microsoft Windows [Version 10.0.10240] (c) 2015 Microsoft Corporation. All rights reserved. C:\cygwin64\home\buildbot>a.exe x y z getcmdline: a.exe x y z szCmdLine: x y z C:\cygwin64\home\buildbot>example.exe x y z example.exe x y z C:\cygwin64\home\buildbot>getcmdline: example.exe x y z szCmdLine: x y z (Incidentally, http://stackoverflow.com/questions/13871617/winmain-and-main-in-c-extended/13872211 and http://daviddeley.com/autohotkey/parameters/parameters.htm looks like informative if one is interested in some nasty details. ) On Sat, May 13, 2017 at 7:30 AM, Mike Barry <mike.ba...@gmail.com> wrote: > Below is a sample program that demonstrates that the GetCommandLine > function is not returning the command line arguments. I attached > cygcheck.out. > > #include <windows.h> > #include <stdio.h> > > int WINAPI > WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw) { > char* text = GetCommandLine(); > printf("getcmdline: %s\n", text); > return 0; > } > > gcc test_wmain.c -o test > > $ ./test hello world > getcmdline: "C:\cygwin64\home\mbarry\game-repos\greenbeam\src\test.exe" > > > -- > 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 -- 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