Hi Fan, Thanks! Your code works. A further question: How can I hide this console window?
Actually these days I can spawn bash and read stdout by using CreateProcess() and pipes, and I can hide the console window of bash by setting a flag in an argument to CreateProcess(). Thanks Gang 2015-09-29 13:43 GMT+08:00 Fan, Chun-wei (范君維) <fanc...@yahoo.com.tw>: > Hi Gang, > > You can take a look at https://support.microsoft.com/en-US/kb/105305. > Basically, you need to have a console attached to the GUI app for your case > to work. > > By running your code, and by adding AllocConsole() just before you spawn > the subprocess, I was able to get the output. > > Hope this helps. With blessings. > > > > Gang Chen 於 2015/9/28 上午 10:01 寫道: > >> >> Hi, >> I'm writing a GTK+ application with MINGW-W64, which spawns a subprocess >> running bash to execute some commands with GSubprocess and reads stdout of >> bash (installed from MSYS2). I found that if compiled without "-mwindows" >> compilation option the main process can read the stdout, while with >> "-mwindows", the read function always returns 0 bytes read. If the main >> process runs a normal console program, or like "mingw32/bin/gcc.exe", then >> it can read stdout even if compiled with "-mwindows". >> The code: >> >> #include <glib.h> >> #include <gio/gio.h> >> #include <gtk/gtk.h> >> #include <stdio.h> >> >> char buffer[100]; >> GtkTextView *text; >> >> void ondataread(GObject *s, GAsyncResult *r, gpointer p) >> { >> GError *error =NULL; >> int l =g_input_stream_read_finish(G_INPUT_STREAM(s), r, &error); >> if (error) >> printf("read error: %s\n", error->message); >> else if (l >0) >> { >> gtk_text_buffer_insert_at_cursor(gtk_text_view_get_buffer(text), >> buffer, l); >> g_input_stream_read_async(G_INPUT_STREAM(s), buffer,100, >> G_PRIORITY_DEFAULT,NULL, ondataread,NULL); >> } >> } >> >> int main(int argc,char **argv) >> { >> char *subpargv[8] = {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL }; >> subpargv[0] = "D:\\msys64\\usr\\bin\\bash.exe"; >> subpargv[1] = "-c"; >> subpargv[2] = "echo good; sleep 10; pwd"; >> // subpargv[0] = "C:\\Windows\\system32\\cmd.exe"; >> // subpargv[1] = "/c"; >> // subpargv[2] = "echo good"; >> // subpargv[0] = "D:\\msys64\\mingw32\\bin\\gcc.exe"; >> // subpargv[1] = "notfile"; >> GSubprocessLauncher *l >> =g_subprocess_launcher_new(G_SUBPROCESS_FLAGS_STDOUT_PIPE | >> G_SUBPROCESS_FLAGS_STDERR_PIPE); >> GError *error =NULL; >> GSubprocess *p =g_subprocess_launcher_spawnv(l, subpargv, &error); >> if (!p) >> { >> printf("spawn error: %s\n", error->message); >> return -1; >> } >> g_object_unref(l); >> g_input_stream_read_async(g_subprocess_get_stdout_pipe(p), >> buffer,100, G_PRIORITY_DEFAULT,NULL, ondataread,NULL); >> g_input_stream_read_async(g_subprocess_get_stderr_pipe(p), >> buffer,100, G_PRIORITY_DEFAULT,NULL, ondataread,NULL); >> gtk_init(&argc, &argv); >> GtkWidget *win =gtk_window_new(GTK_WINDOW_TOPLEVEL); >> GtkWidget *t =gtk_text_view_new(); >> gtk_container_add(GTK_CONTAINER(win), t); >> text =GTK_TEXT_VIEW(t); >> gtk_widget_show_all(win); >> gtk_main(); >> return 0; >> } >> >> How to read stdout correctly? >> Thanks, >> Gang >> >> >> >> _______________________________________________ >> gtk-list mailing list >> gtk-list@gnome.org >> https://mail.gnome.org/mailman/listinfo/gtk-list >> > >
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