Hi all,
I was playing around with dynamic buttons in a Fl_Pack under fltk-1.3.
My sample program is below.
what's supposed to happen:
1. create 5 buttons with label showing the number as they are creates.
2. when clicked, the user has the option to either add a new button (with the
next integer as text), or delete the clicked button.
what happens:
1. The labels don't show the proper text - should be X,1,2,3,4 but shows up
X,4,3,3,4.
2. When the delete menu item is clicked, the clicked button is deleted properly.
3. When the add menu item is clicked, a new button appears, but has garbage
text.
I'm running fltk-1.3 on debian 2.5, with gcc-4.4.5-1, and emacs 23
thanks for any insight on this.
Marty
my test program:
#include <iostream>
#include <string>
#include <cstdio>
#include <cstdlib>
#include <FL/Fl.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Menu_Button.H>
#include <FL/Fl_Menu_Item.H>
#include <FL/Fl_Pack.H>
#include <FL/Fl_Window.H>
using std::cout;
using std::endl;
using std::string;
Fl_Pack* G1;
Fl_Window* WIN;
int idx = 0;
static Fl_Color LBG = FL_DARK_BLUE;
static Fl_Color LFG = FL_WHITE;
static Fl_Color LSC = FL_BLUE;;
static Fl_Color LTC = FL_WHITE;
static Fl_Font LFONT = FL_BOLD;
static Fl_Fontsize FSIZE = 30;
static int LSPC = 5;
string int2str (int num)
{
int size = sizeof(int);
char cstr[size];
sprintf(cstr, "%i", num);
string str = cstr;
return str;
}
class Sbut : public Fl_Menu_Button
{
public:
Sbut (int i);
~Sbut ();
int i() { return _i; }
void set( string str ) { label(str.c_str()); }
int _i;
};
//hhhhhhhhhhhhhhhhhhhhhhhhhhhh
void test_2 (Fl_Widget* w, void* v)
{
char* vv = (char*)v;
cout << "test_2: " << w->label()
<< ": " << vv << endl;
// Sbut* sb = (Sbut*)w;
if ( vv == "add" )
{
cout << "test_2: add" << endl;
Sbut* nb = new Sbut(idx);
G1->add(nb);
// G1->child(idx)->show();
idx++;
}
if ( vv == "del" )
{
cout << "test_2: delete" << endl;
G1->child(G1->find(w))->hide();
}
WIN->redraw();
}
//ddddddddddddddddddddddddddddddddddddd
Fl_Menu_Item xMenu[] = {
{"add button", 0, test_2, (void*)"add"},
{"delete button", 0, test_2, (void*)"del"},
{0}
};
//cccccccccccccccccccccccccc
Sbut::Sbut (int id )
: Fl_Menu_Button( 0, 0, 100, 50)
{
cout << "Sbut(s) 0: " << id << endl;
_i = idx;
string s = int2str(id);
cout << "str = " << s << endl;
label(s.c_str());
cout << "label = " << label() << endl;
color( LBG, LSC);
labelcolor(LFG);
labelfont(LFONT);
labelsize(FSIZE);
menu(xMenu);
if ( menu() )
{
Fl_Menu_Item* mi; // non-const pointer
mi = (Fl_Menu_Item*)menu();
int sz = mi->size();
for ( int j=0; j<sz; j++ )
{
// cout << "set: " << j << endl;
color(LBG, LSC);
mi->labelsize(FSIZE);
mi->labelfont(LFONT);
mi->labelcolor(LFG);
mi = mi->next();
}
}
}
//cccccccccccccccccccccccccc
Sbut::~Sbut ()
{
// delete this;
}
//***********************
int main ()
{
Sbut* sb;
WIN = new Fl_Window(0, 0, 200, 300);
G1 = new Fl_Pack(0, 0, 150, 150);
G1->begin();
for ( int i=0; i<5; i++ )
{
sb = new Sbut(i);
idx++;
}
G1->end();
G1->child(0)->label("X");
WIN->end();
WIN->resizable(G1);
WIN->show();
return Fl::run();
}
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