On 12 Jul 2008, at 0:37, huda wrote:
> I have a problem with writing with "Fl_Multiline_Output"
> when i use a "message" function it does not work, i do not know
> why ???
I assume this code is cut down from something else as an example?
The reason I ask, is that you are never calling your "message"
function anywhere in this example, which I guess is why it does not
work here... It is not clear where it is meant to be getting called.
> also anybody have an idea about how i can use FL_aler FL_message
> how can i use these if i have a specific conditions ???
Sorry, I don't understand this question.
Anyway - some comments on your code follow (but nothing helpful to
your problem, I think.) I assume all the oddities I picked up on are
because you have cut this down from some more complex code.
> void clear_text()
> {
> extern Fl_Multiline_Output *text_output;
This line seems redundant, and possibly confusing - text_output is
already in scope at this point.
> void message()
> {
> extern Fl_Multiline_Output *text_output;
> extern Fl_Button *button;
> extern void clear_text();
All these extern lines seem redundant - the widgets referenced are
already in scope at this point.
> int window_width = GetSystemMetrics(SM_CXFULLSCREEN); // this
> is the area available for the window on the screen
> int window_height = GetSystemMetrics(SM_CYFULLSCREEN);
> int border_width = GetSystemMetrics(SM_CXSIZEFRAME);
> int border_height = GetSystemMetrics(SM_CYSIZEFRAME);
These lines are all win32 specific and initially meant I could not
build your example. There are portable fltk equivalents, so you
should really use those instead.
> printf("%d %d",window_width,border_width);
And there's a '\n' missing from that print statement, I'd suggest!
> Fl_Box b(10,45,380,380); ::b = &b;
Ooh, yuck - I don't like that style of declaring variables with the
"same name" that ostensibly refer to the same object... What's wrong
with just
b = new Fl_Box(...
and losing the "local" reference entirely?
> extern Fl_Button *button;
Again, this extern seems inappropriate.
> extern Fl_Input *input;
...
>
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