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Urgent - Print contents of a Structure

Hi

How do I print to my printer the all the values in a structure
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Dj_Fx8
Asked:
Dj_Fx8
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2 Solutions
 
Gratch06Commented:
if your structure is like this, you can do the following....

struct structure_name {
  int element1;
  double element2;
  string element3;
  .
  .
};

structure_name myStruct;
cout << myStruct.element1 << myStruct.element2 << myStruct.element3 << endl;

Obviously, for most applications, you'll need to format that a bit more specifically, but that's a basic example anyway.  Post back if you have further questions.  Please post your struct definition if there are problems.
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Dj_Fx8Author Commented:
Hi
This struct is quite large (> 1k) with many elements, so it would take too long to type out, I was hopeing for a quict way to do this as it's only required for debugging purposes. Ps here's the structure, as you see it's struct within struct within struct

Struct I want to print

typedef struct tag_NERO_WRITE_CD
{
const char *nwcdArtist;
const char *nwcdTitle;
struct CNeroIsoTrack *nwcdIsoTrack;
BOOL nwcdCDExtra;
void *nwcdpCDStamp;
DWORD nwcdNumTracks;
NERO_MEDIA_TYPE nwcdMediaType;
BOOL nwcdAudioMaster;
DWORD nwcdReserved[31];
NERO_AUDIO_TRACK nwcdTracks[1];
} NERO_WRITE_CD;

Other struct contained within the one I want to print

typedef struct tag_NERO_AUDIO_TRACK
{
DWORD natPauseInBlksBeforeThisTrack;
DWORD natNumIndexPositions;
DWORD natRelativeIndexBlkPositions[98];
const char *natTitle, *natArtist;
NERO_DATA_EXCHANGE natSourceDataExchg;  
DWORD natLengthInBlocks;
BOOL natIndex0ContainsData;
DWORD natReserved[31];
} NERO_AUDIO_TRACK;
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TriskelionCommented:
// Here's a strange hybrid example.

#include <afx.h>
#include <iostream>
using namespace std;

typedef struct tagMY_STRUC
{
  int      element1;
  double element2;
  string element3;
} MY_STRUC;


void main(void)
{
      auto      FILE*      hanPrinter=NULL;
      auto      MY_STRUC      xxxData;

      if (NULL==(hanPrinter=fopen("lpt1","wb")))
            {
            puts("can't open printer");
            return;
            }

      xxxData.element1=156;
      xxxData.element2=123.45;
      xxxData.element3="5432ABC";

      fprintf(hanPrinter, "Element1=%d\nElement2=%3.3f\nElement3=%s",
            xxxData.element1,
            xxxData.element2,
            xxxData.element3.data()
            );
      fclose(hanPrinter);
}
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TriskelionCommented:
If you're just interested in the bytes, you can dump the whole thing to a file with (yeah, I know... old-school) fwrite() and then load it as a binary file in something like TextPad (which will print).

It will not, however, align the data to the structure for you.

I suppose you've exhausted the "watch window", right?
If you print it and find the bug, the printout is immediately obsolete.
The watch window will allow you to expand and colapse the different elements in the structure.
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Roshan DavisCommented:
Yes, I'm expanding Triskelion's way

1. Put a break point in the structure filling code area
2. Run the Application in the Debug mode
3. Right click on the structure object and select "Quick Watch" from the menu
4. Click on the Add watch button of the dialog that popped up when clicking  on Quick Watch
5. Now you can see "Add Watch" window in the botton of the your VC++ editor
6. Expand the strcture tree and select all text using SHIFT Key
7. Paste this data on a notepad/wordpard and Print it

Good luck
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Dj_Fx8Author Commented:
Hi
Thanks for your replies, I guess there's no simple one liners for this but from the info from Triskelion and Roshomon I have got a workable solution, so I'll split the points between you's.
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Roshan DavisCommented:
thankx
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Roshan DavisCommented:
and waiting for the points
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TriskelionCommented:
OK
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