Mental math of GUI placement + widget tutorial

[bigbass]

valadoc.org/gtk+-3.0/Gtk.FileChooserDialog.html

Even though that is vala code
It has an excellent explanation
of why we need the gtk_dialog_run to get the signal

And now its very clear
Why there was a problem with
the signal it has nothing to do
With HUG it is The way it has to be done

But anyway its good that
This is documented clearly
With those two links

And a few demos in this thread

one more link
people.gnome.org/~ryanl/gtk/html/GtkFileChooserDialog.html

some code cleanup
and introduced a new command name
ALIAS gtk_dialog_run TO GETSIGNAL

INCLUDE hug.bac

GTK$= HUGLIB$("gtk")

IMPORT "gtk_dialog_run(long)" FROM GTK$ TYPE int
ALIAS gtk_dialog_run TO GETSIGNAL

win = WINDOW("WINDOW",200,200)

'========================
SUB FILE_DIALOG()
'========================

LOCAL File_name$
PRINT "you got to the call back FILE_DIALOG()"

My_filedialog = FILEDIALOG("File Open demo","Open",200,200,0)
SHOW(My_filedialog)

'--- its clearer to say what it does and that is to get the signal
IF GETSIGNAL(My_filedialog ) == GTK_RESPONSE_ACCEPT THEN
PRINT "GETSIGNAL test the sent signal "
PRINT "The low level Open button was pressed "
file_name$ = GRAB$(My_filedialog)
PRINT file_name$
HIDE(My_filedialog)
END IF
END SUB    



My_button = BUTTON("Open",70,30)
ATTACH(win,My_button,20,20)
CALLBACK(My_button,FILE_DIALOG)

DISPLAY


terminal output

you got to the call back FILE_DIALOG()
GETSIGNAL test the sent signal
The low level Open button was pressed
/home/pi/Downloads/radcad2019-5/source/test3.bac