> i faced two main problem :
>
> 1) when i do by declaring gases class in the main
> gases *g;
> g=new gases();
>
> then
> gaz1->value(g->read_value2());
>
> it just give me the last number i entered; and this is
> reasonable because i return the last
> value However i need to read all 10 numbers
GUI systems are event driven.
Once you enter the Fl::run() loop, the only way you can interact with
the program is by causing some event that will casue it to react...
So, your test code, which simply attempts to read from the command line
will never work, since you have not provided any mechanism for fltk to
interaact with the command line.
Perhaps, in your example case, a simple polling loop, driven by
Fl::add_timeout(..) could be used to poll the command line for input.
However, I think (for the purposes of your example) you would be better
having a widget (such as an Fl_Input) that takes keyboard input directly
and using that to enter values to pass to your progress bar.
For a real program, you need to have some means (either polling or via
some direct event) to update the GUI as your inputs change.
Anyway, here's a fluid file of a simple example that shows how to use
add_timeout and polling to update a progress bar. Perhaps this will help
you to understand what needs to be done in your program.
----------------------------------------------
# data file for the Fltk User Interface Designer (fluid)
version 1.0107
header_name {.h}
code_name {.cxx}
decl {\#include <stdlib.h>} {}
decl {\#include <stdio.h>} {}
decl {char label_string[128];} {}
decl {int keep_ticking = 0;} {}
Function {do_anim(void *)} {open return_type void
} {
code {// do_anim code start
if (keep_ticking){
int value = (int)(slide->value() + 11.1);
if (value > 359) value = value - 360;
slide->value(value);
sprintf(label_string, "@+30%04d|>", value);
symbol_but->copy_label(label_string);
symbol_but->redraw();
Fl::repeat_timeout(0.1, do_anim);
}
// do_anim code end} {selected
}
}
Function {} {open
} {
Fl_Window {} {
label {Angle Test} open
xywh {504 51 222 195} type Double visible
} {
Fl_Button symbol_but {
label [EMAIL PROTECTED]|>}
xywh {70 6 95 55} box ENGRAVED_BOX
}
Fl_Value_Slider slide {
label Angle
callback {// spin callback
int value = (int)(slide->value() + 0.45);
sprintf(label_string, "@+30%04d|>", value);
puts(label_string); fflush(stdout);
symbol_but->copy_label(label_string);
symbol_but->redraw();
// end of spin callback;}
xywh {21 81 190 26} type Horizontal align 66 maximum 359.9 step
0.1 textsize 12
}
Fl_Button quit {
label Quit
callback {exit(0);}
xywh {148 162 64 23} box THIN_UP_BOX
}
Fl_Button anim {
label Start
callback {int state = anim->value();
if (state) {
keep_ticking = 1;
Fl::add_timeout(0.1, do_anim);
anim->label("Stop");
}
else {
keep_ticking = 0;
anim->label("Start");
}}
xywh {20 162 64 23} type Toggle box THIN_UP_BOX
}
}
code {Fl::visible_focus(0); // supress visible focus indication} {}
}
----------------------------------------------
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