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[STR New]

Link: https://www.fltk.org/str.php?L2639
Version: 1.4-feature


Attached file "str2639_rsz_flex.cxx"...


Link: https://www.fltk.org/str.php?L2639
Version: 1.4-feature

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Flex.H>
#include <FL/Fl_Button.H>

Fl_Flex *p1;
Fl_Group *g1, *g2, *g3;

////////////////////////////////////////////////////////////////

static void b1_cb(Fl_Widget *w, void *data) { // "Hide G2"
  Fl_Group *g2 = (Fl_Group *)data;
  if (g2->visible()) {
    g2->hide();
    p1->layout();
  }
}

static void b2_cb(Fl_Widget *w, void *data) {
  Fl_Group *g2 = (Fl_Group *)data;
  if (!g2->visible()) {
    g2->show();
    p1->layout();
  }
}

int main(int argc, char **argv) {
  Fl_Button *b1, *b2;

  Fl_Window *window = new Fl_Window(400, 400, "Fl_Flex test");
  window->begin();

  // p1 = Fl_Flex with only one "resizable" widget inside
  p1 = new Fl_Flex(0, 0, 400, 400);
  p1->type(Fl_Flex::VERTICAL);
  p1->begin();

  g1 = new Fl_Group(0, 0, 0, 30, "Group 1");
  g1->align(FL_ALIGN_CENTER | FL_ALIGN_INSIDE);
  g1->box(FL_UP_BOX);
  g1->color(FL_CYAN);
  g1->end();

  g2 = new Fl_Group(0, 0, 0, 30, "Group 2");
  g2->align(FL_ALIGN_CENTER | FL_ALIGN_INSIDE);
  g2->box(FL_UP_BOX);
  g2->color(FL_RED);
  g2->end();

  g3 = new Fl_Group(0, 0, 0, 280, "Group 3     R e s i z a b l e");
  g3->align(FL_ALIGN_CENTER | FL_ALIGN_INSIDE);
  g3->box(FL_UP_BOX);
  g3->color(FL_GREEN);
  g3->end();

  b1 = new Fl_Button(0, 340, 50, 30);
  b1->label("Hide G2");
  b1->callback(b1_cb, g2);

  b2 = new Fl_Button(0, 370, 50, 30);
  b2->label("Show G2");
  b2->callback(b2_cb, g2);

  // Fl_Flex p1: set layout and end group

  p1->fixed(g1, 30);
  p1->fixed(g2, 30);
  p1->fixed(b1, 30);
  p1->fixed(b2, 30);
  p1->end();
  // p1->resizable(g3); // would be ignored by Fl_Flex

  window->end();
  window->resizable(window);
  window->size_range(200, 60);
  window->show();
  return Fl::run();
}