I ran into this while working on the "file-picker" vocabulary for cross-platform open and save dialogs. You can see how we did this for GTK:
https://github.com/slavapestov/factor/blob/master/extra/file-picker/linux/linux.factor Basically, defined an alien function with the args we intended it to be called with, maybe a little annoying if you have a lot of variants of vararg arity, but worked for this case. Be good to hear if it works for you and, given the need for stack-checking, how we might improve this. Best, John. > On Apr 7, 2015, at 11:35 AM, Mark Green <m...@antelope.nildram.co.uk> wrote: > > Hi, > > I'm continuing my noodling with UIs using GTK but have hit a problem when > using GTK's dialog functions. They accept a final vararg parameter and I'm > not sure how to specify these when calling from Factor. To whit: > > : s>gs ( string -- gstring ) utf8 string>alien ; > > : main ( -- ) > f f gtk_init > "Hello" s>gs f GTK_FILE_CHOOSER_ACTION_OPEN GTK_STOCK_CANCEL > { GTK_RESPONSE_CANCEL GTK_STOCK_OPEN GTK_RESPONSE_ACCEPT f } > gtk_file_chooser_dialog_new gtk_dialog_run drop ; > > If I try this, I get a message saying "generic word underlying>> is not > defined for string 'gtk-cancel'". I presume that at some point, > GTK_RESPONSE_CANCEL is getting expanded into Factor string "gtk-cancel". I > then tried to fix this by applying [ s>gs ] map to the list, but this also > doesn't work as I get an error saying that s>gs cannot be applied to the word > GTK_RESPONSE_CANCEL. So it seems that s>gs needs to be performed somewhere > during the expansion process, but isn't being. Plus, I don't even know if > this is the right syntax for a varargs call. Is there a standard for how to > do this? > > Mark > > > ------------------------------------------------------------------------------ > BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > Factor-talk mailing list > Factor-talk@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/factor-talk ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk
