> I implemented as you said. It worked great. But the problem is
> callback is not happening. Here is the code. Can u plz tell me why it is
> not happening??
Is that fltk2 code? If so, be advised that fltk2 is deprecated and should not
really be used for new work. Use fltk-1.3 which is the stable (and actively
maintained) branch.
Anyway - I think the problem is that your derived handle() method needs to
explicitly call the base class handle method, for things to work.
That is what Greg showed in his example, but you appear to have missed that bit
out...
>
> class colorInpt : public Input {
> int handle(int event);
> public:
> colorInpt(int x, int y, int w, int h, const char *L);
>
> };
>
> colorInpt::colorInpt(int x, int y, int w, int h, const char *L) : Input(x,
> y, w,h,L){ //Constructor for Input class
> }
>
> int colorInpt::handle(int e) {
> int ret = 0;
No: This line should be
int ret = Input::handle(e);
> switch (e) {
> case FOCUS: color(0xff0c3800);
> redraw();
> return False;
No: If you consume the FOCUS event, you should return non-zero here, so that
the fltk core knows you are interested in focus/unfocus events for this
widget...
> case UNFOCUS: color(0xa3a3c600);
> redraw();
> return False;
No: ditto to the FOCUS case above...
> }
> return(ret);
> }
>
> static colorInpt *inputL = NULL;
>
> static void cb_mycallback(colorInpt* ip, void*){
>
> strcpy(LoginId, ip->value());
> #ifdef DEBUG
> fprintf(stderr,"Login Id ::%s\n", LoginId);
> #endif
> }
>
>
> inputL = new colorInpt(100, 50, 130, 25, "Login Id :");
> inputL->labelsize(14);
> inputL->callback((fltk::Callback*)cb_mycallback);
> inputL->when(fltk::WHEN_CHANGED);
>
>
> On Thu, Apr 12, 2012 at 9:36 AM, Rajesh Kumar <[email protected]> wrote:
>
> > Hi Greg,
> >
> > Here I should declare a class named Fl_Input or can I
> directly
> > call handle method of Input box???
> >
> > On Wed, Apr 11, 2012 at 11:35 PM, Greg Ercolano <[email protected]> wrote:
> >
> >> On 04/11/12 10:46, Rajesh Kumar wrote:
> >> > Thanks for the reply. Can u post pseudo code for this??
> >>
> >> I think Albrecht means something like this in your derived class:
> >>
> >> int handle(int e) {
> >> int ret = Fl_Input::handle(e);
> >> switch (e) {
> >> case FL_FOCUS: color(YOUR_FOCUS_COLOR); redraw();
> >> return(1);
> >> case FL_UNFOCUS: color(YOUR_UNFOCUS_COLOR); redraw();
> >> return(1);
> >> }
> >> return(ret);
> >> }
SELEX Galileo Ltd
Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14
3EL
A company registered in England & Wales. Company no. 02426132
********************************************************************
This email and any attachments are confidential to the intended
recipient and may also be privileged. If you are not the intended
recipient please delete it from your system and notify the sender.
You should not copy it or use it for any purpose nor disclose or
distribute its contents to any other person.
********************************************************************
_______________________________________________
fltk mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk
