Lukasz wrote:
> This is for your amusement.
>
> 1)In my program there is a class whose first private element is "offscreen
> scr". Program compiles and runs wwith no problems. However, if I add another
> private element to the class (and do nothing with it!), which is _before_
> offscreen scr (I know it absolutely shouldn't have any influence whatsoever)
> the program compiles but there is an error
>
> X_PolySegment: BadDrawable (invalid Pixmap or Window parameter) 0x2c30352e
>
> at runtime.
Look for uninitialized variables. In your recent example program, you didn't
initialize exactly this private variable Fl_Offscreen scr;
I tested your previous example and found that you could simply add
scr = 0;
in your plot_box constructor, and everything works as expected, even with the
statement
fl_draw("test",10,10);
uncommented. However, this draws black text on a black background.
Add fl_color(FL_RED); before fl_draw(...), and you will see that your example
works.
>
> 2) In my program I have a window with 17 Fl_Boxes as childs. I have a "for"
> loop which initializes them which starts like "for(int i=0;i<17;i++)".
> Everything works fine. If I change 17 to 15 everything still works fine, but
> if I change to 16 situation is as in 1) (and nothing else is done with these
> Fl_Boxes, they're aboslutely isomorphic).
>
> :-)))
This looks very much like a problem with uninitalized variables.
> I'm not feeling like preparing short programs which demonstrate these issues
> since I'm not sure how long would it take. However, if anybody's interested I
> can post whole program somewhere.
Without sources, everybody can only guess.
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