GTK+ Forums

Joel · Familiar Face Joined: 06 Apr 2008 Posts: 32

In perl-gtk I can run apps and get the return data:

Code: (Perl)
1 2 3 4 5	my $data = `md5sum somefile.deb`; # text1 is an entry widget text1->set_text($data);

Is there a function in gtk binary development with the same effect?

Micah Carrick · Posted: Thu Jun 12, 2008 3:59 pm Post subject:

Do you mean in C programming? If so, check out Execute command into a GtkTextView (C and Libglade)

Joel · Familiar Face Joined: 06 Apr 2008 Posts: 32

Thanks..that help..this is my sub final code:

Code: (C)

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#include <gtk/gtk.h>

typedef struct {
GtkWidget *edit1;
GtkWidget *edit2;
GtkWidget *filesel;
} gData, *PGDATA;

gData myWidgets = {0};

void OnWindowDestroy(GtkWidget *widget, gpointer data) {
gtk_main_quit();
}

void OnFileSelCancel(GtkWidget *w, gpointer fs) {
gtk_widget_destroy(GTK_WIDGET(fs));
}

void OnFileSelOk(GtkWidget *w, gpointer data) {
gchar *file;
gchar *command;
gchar *outmd5;

file = g_strdup_printf("%s", gtk_file_selection_get_filename(GTK_FILE_SELECTION(((PGDATA)data)->filesel)));
gtk_entry_set_text(GTK_ENTRY(((PGDATA)data)->edit1), file);
gtk_widget_destroy(GTK_WIDGET(((PGDATA)data)->filesel));

command = g_strdup_printf("md5sum \"%s\"", file);

g_spawn_command_line_sync(command, &outmd5, 0, 0, 0);
gtk_entry_set_text(GTK_ENTRY(((PGDATA)data)->edit2), outmd5);

g_free(outmd5);
g_free(command);
g_free(file);
}

void OnButton1Clicked(GtkWidget *widget, gpointer data) {
((gData*)data)->filesel = gtk_file_selection_new("");
g_signal_connect(G_OBJECT(GTK_FILE_SELECTION(((gData*)data)->filesel)), "destroy", G_CALLBACK(OnFileSelCancel), ((gData*)data)->filesel);
g_signal_connect(G_OBJECT(GTK_FILE_SELECTION(((gData*)data)->filesel)->cancel_button), "clicked", G_CALLBACK(OnFileSelCancel), ((gData*)data)->filesel);
g_signal_connect(G_OBJECT(GTK_FILE_SELECTION(((gData*)data)->filesel)->ok_button), "clicked", G_CALLBACK(OnFileSelOk), data);
gtk_widget_show(((gData*)data)->filesel);
}

int main(int argc, char *argv[]) {
GtkWidget *Window;
GtkWidget *panel;
GtkWidget *label1;
GtkWidget *part1;
GtkWidget *button1;
GtkWidget *label2;

gtk_init(&argc, &argv);
Window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(Window), GTK_WIN_POS_CENTER);
//gtk_window_set_default_size(GTK_WINDOW(Window), 350, 120); // This doesn't worlk
gtk_window_set_resizable(GTK_WINDOW(Window), FALSE);
gtk_window_set_title(GTK_WINDOW(Window), "md5 - chica");
g_signal_connect(G_OBJECT(Window), "destroy", G_CALLBACK(OnWindowDestroy), NULL);

panel = gtk_vbox_new(TRUE, 0);
gtk_container_add(GTK_CONTAINER(Window), panel);

label1 = gtk_label_new("Ingresa el fichero a obtener MD5:");
gtk_box_pack_start(GTK_BOX(panel), label1, TRUE, TRUE, 0);

part1 = gtk_hbox_new(TRUE, 0);
gtk_box_pack_start(GTK_BOX(panel), part1, TRUE, TRUE, 0);

myWidgets.edit1 = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(part1), myWidgets.edit1, TRUE, TRUE, 0);

button1 = gtk_button_new_from_stock("gtk-find");
g_signal_connect(G_OBJECT(button1), "clicked", G_CALLBACK(OnButton1Clicked), &myWidgets);
gtk_box_pack_start(GTK_BOX(part1), button1, TRUE, FALSE, 0);

label2 = gtk_label_new("Salida:");
gtk_box_pack_start(GTK_BOX(panel), label2, FALSE, FALSE, 0);

myWidgets.edit2 = gtk_entry_new_with_max_length(32);
gtk_box_pack_start(GTK_BOX(panel), myWidgets.edit2, FALSE, FALSE, 0);

gtk_widget_show_all(Window);
gtk_main();
}

I want the window to be 350 X 120 and void the user to resize it, any ideas?
Also ideas to improve my above code are welcome :)

dreblen · Posted: Fri Jun 13, 2008 12:11 am Post subject:

you can try using gtk_window_resize and gtk_window_set_resizable:
http://library.gnome.org/devel/gtk/stable/GtkWindow.html#gtk-window-resize
http://library.gnome.org/devel/gtk/stable/GtkWindow.html#gtk-window-set-resizable
if gtk_window_set_default_size didn't work, you might need to call it after the widget is realized (either by showing it or by calling gtk_widget_realize)

Joel · Familiar Face Joined: 06 Apr 2008 Posts: 32

Joel · Familiar Face Joined: 06 Apr 2008 Posts: 32

No, it didn't.. :(

/edit:
But this did:

Code: (C)
1 2 3 4	gtk_widget_set_size_request(GTK_WIDGET(Window), 450, 120); gtk_window_set_resizable(GTK_WINDOW(Window), FALSE);

Vadi · GTK+ Geek Joined: 28 May 2008 Posts: 68

Won't the spawn_sync freeze up for app while it's doing the md5sum? I think a thread and an async is what you're looking for (if you want your app to be always responsive and whatnot).

Micah Carrick · Posted: Fri Jun 13, 2008 5:07 am Post subject:

Yes, as the names imply, using g_spawn_sync your application has to wait for it to finish (synchronous) where as g_spawn_async is asynchronous but can be a bit more confusing to new programmers.

If even more functionality is needed, a GIOChannel can be quite usesful and is worth looking over.

Joel · Familiar Face Joined: 06 Apr 2008 Posts: 32

I have a problem and I don't think that is my substring function :\
My substr function:

Code: (C)
1 2 3 4 5 6 7 8	char* substr(const char str, int start, int end) { if (end < 1) end = strlen(str) + 1; char buffer = malloc(end+1); strncpy(buffer, str + start, end); return buffer; }

Now the critical part of my code:

Code: (C)
1 2 3 4 5 6 7 8 9 10 11 12	gchar command; gchar outmd5; char *md5; command = g_strdup_printf("md5sum \"%s\"", "some_file.deb"); g_spawn_command_line_sync(command, &outmd5, 0, 0, 0); md5 = substr(outmd5, 0, 32); gtk_entry_set_text(GTK_ENTRY(somentry), md5); free(md5); g_free(outmd5); g_free(command);

The above code, md5 always returns the md5 code + garbage, something like:
11139cfd35b803ff1fb286e847f5761dBVkt
Any ideas?

dreblen · Posted: Fri Jun 13, 2008 3:16 pm Post subject:

I think that your problem might be fixed by this:

Code: (C)
1 2 3 4 5 6 7 8 9 10 11 12	char* substr(const char str, int start, int end) { / some compilers don't like putting code before variable declarations / char buffer; if(end < 1) end = strlen(str) + 1; /* you should typecast the void* that malloc returns / buffer = (char)malloc(end+1); strncpy(buffer, str+start, end); /* this is new */ buffer[end] = '\0'; return buffer; }

Joel · Familiar Face Joined: 06 Apr 2008 Posts: 32

Thanks, that worked :)