Thanks guys, I have found the difference but do not understand it..

I had coded:-

       Fl_Tabs *cards = new Fl_Tabs(40,40,300,200);

while your demonstration has coded:-

      cards = new Fl_Tabs(40,40,300,200);

Would be very grateful if you could explain the difference

Cheers

Roger

I am using V1.3.4.9  as supplied by

Operating System: Debian GNU/Linux 10 (buster)
           Kernel: Linux 4.19.0-21-amd64
     Architecture: x86-64

 

On Sunday, September 25, 2022 at 9:13:25 AM UTC+10 er...@seriss.com wrote:

On 9/24/22 16:04, roger tunnicliffe wrote:

Copy and pasted your working version code and it compiled (after adding FL/Fl.H) okay but when I stepped thru the program "cards->show()" did nothing (nothing displayed) ???

    That's because no tabs were defined in your Fl_Tabs widget,
    making it effectively 'invisible'.

    To define tabs in the tab widget, you have to add child Fl_Groups,
    one per tab.

    Each child group of Fl_Tabs will be a separate tab; the group's label name
    will be that tab's title, and the contents of the group will be the contents of the tab.

    See the small program I replied with which defines 3 tabs so that
    the tab widget can be seen..