From: "Rylan" Newsgroups: comp.os.msdos.djgpp Subject: Altering Caller's local variables from an Allegro Dialog Func Date: Tue, 8 Dec 1998 08:28:07 +0200 Organization: The South African Internet Exchange Lines: 35 Message-ID: <74ih2n$us$1@news2.saix.net> NNTP-Posting-Host: pc25-01-p03.saix.net X-Trace: news2.saix.net 913098647 988 196.25.111.153 (8 Dec 1998 06:30:47 GMT) X-Complaints-To: abuse AT saix DOT net NNTP-Posting-Date: 8 Dec 1998 06:30:47 GMT X-Newsreader: Microsoft Outlook Express 4.72.2106.4 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Hi, How can I alter caller variables passed in the DIALOG struct when calling a custom Allegro dialog procedure using popup_dialog? I want to be able to pass an int back from the custom dialog procedure to the calling function, so that it can be processed after popup_dialog exists. I have tried passing the address of the variable in the void * dp field of the the DIALOG struct, but when I try to dereference it in order to access the "pointed to" int in the custom dialog procedure I have written, GCC complains that I am dereferencing a "void *". How then can I alter a variable using pass-by-reference in an Allegro dialog procedure using the DIALOG struct? How do I dereference a variable passed to a dialog procedure without getting the "attempting to dereference void *" warning from GCC? Please reply by email if at all possible! Fanx! Spawned By Rylan Is truth beauty or beauty truth? http://home.intekom.com/rylan/index.html -- Spawned By Rylan Is truth beauty or beauty truth? http://home.intekom.com/rylan/index.html