hi,

you are calling the function Scanning() in the g_idle_add() call.

richard

On Tue, Jan 20, 2015 at 3:23 PM, Ian Chapman <ichap...@videotron.ca> wrote:

>  Hi all,
>
> Sorry to bother but I'm lost with the workings of
>
> guint g_idle_add ()
>
> My code is as
> follows
>
> extern "C"
>
> void on_StartScan_activate() //from gtk menu item
>
> { printf("Start Scan Activated. \n");
>
> scan_on_fg =1;
>
> Scanning_lvl = g_idle_add((GSourceFunc) Scanning(), (gpointer) 0);
>
> printf("Exiting StartScan.\n");  //main.cpp, Line 129
>
> return; }
>
> I get to Scanning() okay but I don't exit on_StartScan_activeat() until I
> exit Scanning() (not what I expected).
>
> Worse still when I step through Scanning as I exit I get
>
> (gdb) next
>
>  (main:24011): GLib-CRITICAL **: g_idle_add_full: assertion `function !=
> NULL' failed
>
> on_StartScan_activate () at main.cpp:129
>
> (gdb) next
>
> Exiting StartScan.
>
>
>  guint Scanning(void)
>
> {
>
> while(1 == scan_on_fg)
>
> { //Bean counting with rest of GUI in control, I hoped. }
>
> return(FALSE); //Remove this thread.
>
> }
>
>
>  Regards Ian.
>
> _______________________________________________
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>
>
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