On 03/28/12 00:29, Rajesh Kumar wrote:
> Hi all,
>
> I am using choice box in my application. Choice box is expanding
> up to the maximum data size. I think this is the general property, which
> seems to be fine. But my resolution is 240*320. So the data in choice box
> is going away out of my display. And even choice box doesn't have
> horizontal and vertical scroll also. Can any body give suggestions, how to
> restrict the extending property of choice box. I am using FLTK1.3 on ARM
> linux platform.
Perhaps use an Fl_Browser instead to let the user pick items.
Have it appear when the user pushes a button that lets them
change what's selected.
Here's a quick example of what I mean.. flesh it out as needed.
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Select_Browser.H>
//
// Minimal example of a scrollable 'menu' like Fl_Choice. -erco 03/28/2012
//
class MyFloatingWindow : public Fl_Window {
public:
MyFloatingWindow(int W,int H,const char *L=0) : Fl_Window(W,H,L) {
}
int handle(int e) {
// MOUSE LEAVES WINDOW? HIDE
if ( e == FL_LEAVE ) {
hide();
}
return(Fl_Window::handle(e));
}
};
class MyChoiceButton : public Fl_Button {
MyFloatingWindow *win;
Fl_Select_Browser *brow;
void Browser_CB() {
int i = brow->value();
if ( i ) {
const char *item = brow->text(brow->value());
printf("Clicked on: %s\n", item);
label(item);
}
win->hide();
}
static void Browser_CB(Fl_Widget *w, void *o) {
((MyChoiceButton*)o)->Browser_CB();
}
void Button_CB() {
win->show();
}
static void Button_CB(Fl_Widget *w, void *o) {
((MyChoiceButton*)o)->Button_CB();
}
public:
MyChoiceButton(int X,int Y,int W,int H, const char *L=0) :
Fl_Button(X,Y,W,H,L) {
align(FL_ALIGN_LEFT|FL_ALIGN_CLIP|FL_ALIGN_INSIDE);
Fl_Group *save = Fl_Group::current();
Fl_Group::current(0);
win = new MyFloatingWindow(150,200); // whatever size is best
brow = new Fl_Select_Browser(0,0,win->w(),win->h());
win->end();
win->border(0);
Fl_Group::current(save);
callback(Button_CB, (void*)this);
brow->callback(Browser_CB, (void*)this);
}
void AddItem(const char *s) {
brow->add(s);
label(s);
}
};
int main() {
Fl_Window win(300,180);
MyChoiceButton but(20,30,100,25);
but.AddItem("I am using choice box in my application.");
but.AddItem("Choice box is expanding up to the maximum data size.");
but.AddItem("I think this is the general property, which seems to be fine.");
but.AddItem("But my resolution is 240*320.");
but.AddItem("So the data in choice box is going away out of my display.");
win.show();
return(Fl::run());
}
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