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From:	King Chung Huang <kinghuang AT NOSPAMearthlink DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Linked Lists Help!
Organization:	University of Calgary
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Date:	31 Jan 2002 06:40:47 GMT
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hi everyone,

I'm trying to create a linked list in C. Here's a snippet of relevant 
code:

typedef struct {
   // metadata
    char name[256];         // window title name
    unsigned short x;       // x co-ordinate position of the window
    unsigned short y;       // y co-ordinate position of the window
    unsigned short width;   // width of the content region (local)
    unsigned short height;  // height of the content region (local)
    short isDirty;          // does the window need updating?
    
   // content data
   struct qdPort *qdRef;   // the qdPort
   
   // links
   struct qdWindow *above; // next window above
   struct qdWindow *below; // next window below
} qdWindow;



// create a new window structure
        struct qdWindow *newWindow;
        newWindow = malloc(sizeof(qdWindow));
        
        // links
        newWindow -> below = windowTop;
        newWindow -> above = NULL;
        windowTop -> above = newWindow;
        windowTop = newWindow;


The problem i'm having is that when i go to compile, every line that has 
"newWindow -> (some field) = (something)" generates the error 
"dereferencing pointer to incomplete type". I've scoured all my books on 
linked lists in C, and I can't figure out what I'm doing wrong. Does 
anyone have any ideas?

TIA

-- 
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King Chung Huang           kinghuang AT NOSPAMearthlink DOT net
Learning Commons                     Tel: (403) 220-4949
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