[syslinux] Does advanced menu actually support ontimeout?

[Murali Krishnan Ganapathy]

reg_ontimeout(ontimeout,1500,0);

should become

reg_ontimeout(ontimeout,150,10);

Basically the second argument should also be non-zero. In the second 
case, we are saying that the timeout handler should be called if no key 
is pressed for 15 seconds (150*10 centiseconds) and check for a key 
should be done every 10 centi-seconds.

Also, there is a routine you can call to add a seperator. The call is 
equivalent to what you are doing, so don't have to worry about it.

Hope this helps.

- Murali

Nazo wrote:
> On 11/6/05, Nazo <nazosan at gmail.com> wrote:
>   
>> On 11/6/05, Murali Krishnan Ganapathy <gmurali at cs.uchicago.edu> wrote:
>>     
>>> For the tab_key code to take effect you need to register the "keys
>>> handler". Basically the menu system will call your keys handler, if the
>>> user presses any key which it does not understand. You can do what you
>>> want with it.
>>>
>>> - Murali
>>>
>>> Nazo wrote:
>>>       
>>>> I've finally gotten around to playing with the advanced menu, though
>>>> the complex example is definitely still beyond me.  I'm trying to
>>>> figure out a few basics from it, such as the tab key for line editing
>>>> (don't know what I've done wrong here since it seems like I copied
>>>> that part right) and the timeout.  It looks to me like the only
>>>> ontimeout implemented so far is an option to not even show the menu at
>>>> all if the user doesn't press a key within a certain time period.
>>>> But, I want it to show the menu and simply time out after a while of
>>>> no keypresses.  Is there any way to implement this that doesn't
>>>> require several pages of code?  Have I just gotten mixed up and it
>>>> already does this but I copied that code wrong too?
>>>>
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>>>>
>>>>
>>>>         
>>>       
>> Yes, well, I caught that part.  Thing is, I copied these two lines
>> from the complex sample code:
>>   reg_handler(HDLR_KEYS,&keys_handler);
>>   reg_ontimeout(ontimeout,1000,0);
>>
>> And the appropriate declarations for those to work (as far as I know
>> anyway) and neither one is functioning.  That's why I asked in here.
>> Both seem to fit that criteria mentioned earlier.  I'm probably
>> missing something, but, I'm afraid I don't know what it is.  If it
>> were as simple as just looking in the manual and automatically
>> understanding I wouldn't be asking here, and I still hesitated as it
>> was.
>>
>>     
>
>
> I guess, in case it makes it any easier, I should just paste the code
> I currently have.  Note that it's probably not all right and I know
> it.  I'm trying to learn as I go, but, some of this stuff is a bit
> over my head as it is.  I started from the complex code and tried to
> simplify as much as I could.  Here's my current attempt at "complex"
> menu code:
>
> /* -----------------------------------------------------------------------------
>   Advanced menu system for syslinux - C code.
>
>   For main PC
> ----------------------------------------------------------------------------- */
>
>
> #ifndef NULL
> #define NULL ((void *) 0)
> #endif
>
> #include "menu.h"
> #include "com32io.h"
> #include <string.h>
>
> #define EDITPROMPT 22
>
> TIMEOUTCODE ontimeout() {
>   beep();
>   return CODE_WAIT;
> }
>
>
> void keys_handler(t_menusystem *ms, t_menuitem *mi,unsigned int scancode) {
>    char nc;
>
>    if (((scancode & 0xFF) == 0x09) && (mi->action == OPT_RUN)) {
>      nc = getnumcols();
>      // User hit TAB
>      gotoxy(EDITPROMPT,1,ms->menupage);
>      csprint("Command line:",0x07);
>      editstring(mi->data,ACTIONLEN);
>      gotoxy(EDITPROMPT,1,ms->menupage);
>      cprint(' ',0x07,nc-1,ms->menupage);
>    }
> }
>
>
> int main(void) {
>   t_menuitem * curr;
>
>   char MAIN;
>
>   reg_handler(HDLR_KEYS,&keys_handler);
>   reg_ontimeout(ontimeout,1500,0);
>
>
>   // setvideomode(0)
>
>   init_menusystem(NULL);
>   set_window_size(1,1,23,78); // Leave one row/col border all around
>
>   MAIN = add_menu(" Syslinux Boot Menu ", 10);
>     add_item("<W>indows","Boot Windows",OPT_RUN,"chain.c32 hd0 2",0);
>     add_item("<L>inux","Boot Gentoo Linux 2005.1",OPT_RUN,"gentoo
> initrd=gentinit vga=0x31b root=/dev/ram0 real_root=/dev/hda7 udev
> ramdisk=16384 video=vesafb:mtrr,ywrap,1280x1024-32 at 60",0);
>     add_item("<G>eeXboX","Boot GeeXboX",OPT_RUN,"geexbox
> initrd=geexinit.gz root=/dev/ram0 rw init=linuxrc boot=hda1 splash=0
> vga=0x315 video=vesafb:ywrap,mtrr",0);
>     add_item("<P>artition Magic 8","Boot Partition Magic 8 Rescue
> Disk",OPT_RUN,"memdisk initrd=/disks/pqmagic.gz floppy",0);
>     add_item("<M>emtest86+ 1.60","Boot MemTest86+",OPT_RUN,"memtestp",0);
>     add_item("Prime<9>5 24.13","Boot Prime95 Test
> Disk",OPT_RUN,"mprime initrd=mpinit.gz rw ramdisk_size=5325",0);
>     add_item("DOS <B>ootdisk (Windows 98 based)","Boot
> DOS",OPT_RUN,"memdisk initrd=/disks/dos.gz floppy",0);
>     add_item("DOS <6>.22 Bootdisk","Boot DOS",OPT_RUN,"memdisk
> initrd=/disks/dos622.gz floppy",0);
>     add_item("----------------------------------","SEPERATOR",OPT_INACTIVE,"SEPERATOR",0);
>     add_item("E<x>it","Return to Prompt",OPT_EXITMENU,"exit",0);
>
>
>   curr = showmenus(MAIN);
>   if (curr) {
>         if (curr->action == OPT_RUN) {
>             if (issyslinux()) runsyslinuxcmd(curr->data);
>             else csprint(curr->data,0x07);
>             return 1;
>         }
>         csprint("Error in programming!",0x07);
>   }
>   return 0;
> }
>
>