C / C++ / MFC

PJ Arends5-Feb-06 12:02

PJ Arends

5-Feb-06 12:02

Instead of having a file full of periods, why not run a text file through your function? Using a text file that you can read will give you the ability to quickly see what characters you are missing, or reading double etc. Using just periods makes it really dificult to figure out what is going wrong.

Lord Kixdemp5-Feb-06 16:04

Lord Kixdemp

5-Feb-06 16:04

AHA!! YES I FINALLY GOT THERE!!! Big Grin | :-D

(A while ago, I went to a friend's house with my laptop, and I was making this program, and I had gotten to a point in which I was almost about to fix it! But the battery ran out, and I fell asleep as soon as I got home, and the next day I forgot how to get there again... Cry | :((

) But now I got to that point again! Big Grin | :-D

Look at the file again:

|...........||.......................................................................................................................................................|.............|

outputz.txt outputs exactly like the original (except with 1 extra space at the end), but now it looks like it's a rendering problem... Can you check out my rendering function also? Smile | :)

It has another temp stream, "temp.txt", which outputs this:

|..............................................|.....................|..................................................................|..........|................................

Totally different, as you can see... This function uses the values from this->mapLayers, which I made when in the first function I posted, instead of characters... Here's the new func:

(I was gonna upload it, but my crappy-butt host timed out when accepting my password)

void Mazzee::DrawMap()<br />
{<br />
   FILE * temp = fopen("temp.txt", "wb");<br />
   // Fill with tiles<br />
   <br />
   for (int v = 0; v < 1; v++)<br />
   {<br />
       for (int x = 0; x < WIDTH; x += CHARW)<br />
       {<br />
           for (int y = 0; y < HEIGHT; y += CHARH)<br />
           {<br />
               SDL_Rect src, dest;<br />
<br />
               if (v == 0)<br />
               {<br />
                   if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == LX_EMPTY) fputs(".", temp);<br />
                   else if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == L1_GRASS) fputs("|", temp);<br />
<br />
                   if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == LX_EMPTY) src.x = 0;<br />
                   else if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == L1_GRASS) src.x = CHARW;<br />
               }<br />
               else if (v == 1)<br />
               {<br />
                   if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == LX_EMPTY) src.x = 0;<br />
                   else if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == L2_ROCK) src.x = CHARW;<br />
               }<br />
               else if (v == 2)<br />
               {<br />
                   if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == LX_EMPTY) src.x = 0;<br />
                   else if (this->mapLayers[v][(y/32) * (WIDTH/32) + (x/32)] == L3_TELEPORTER) src.x = CHARW;<br />
               }<br />
               else<br />
               {<br />
                   MessageBox(NULL, "Hi!", "None was found...", MB_OK);<br />
               }<br />
<br />
               src.y = 0;<br />
               src.h = CHARH;<br />
               src.w = CHARW;<br />
<br />
               dest.x = x;<br />
               dest.y = y;<br />
               dest.h = CHARH;<br />
               dest.w = CHARW;<br />
<br />
               SDL_BlitSurface(this->mapLayerTiles[v], &src, this->screen, &dest);<br />
           }<br />
       }<br />
   }<br />
<br />
   fclose(temp);<br />
}<br />

Any ideas? Thanks! Wink | ;-)

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

Christian Graus5-Feb-06 15:23

Christian Graus

5-Feb-06 15:23

I would recommend using C++ for file handling.

Christian Graus - Microsoft MVP - C++

Jeremy Falcon5-Feb-06 17:54

Jeremy Falcon

5-Feb-06 17:54

Christian Graus wrote:
I would recommend using C++ for file handling.

Why? I'm earnestly interested in your reasons. I'm used to the c-style versions and would like to know if I'm missing out on something I'm not aware of.

Jeremy Falcon

Stephen Hewitt5-Feb-06 18:49

Stephen Hewitt

5-Feb-06 18:49

I also prefer the C++ file handling mechanism. Here's why I think they're better then the C counter parts.

Simplicity. The following code outputs an integer, a string and a complex number. In C we would have the call different function for each type (or use something like fprintf, but then we run into type safety issues, which is my last point, and it only works for a set number of types which doesn't include complex):

#include <fstream>
#include <complex>
using namespace std;
 
int main(int argc, char* argv[])
{
     ofstream fs("C:\\out.txt");
 
     fs << 1 << endl;
     fs << "Hello" << endl;
 
     complex<int> ComplexNumber(1,2);
     fs << "This is a complex number: " << ComplexNumber << endl;
 
     return 0;
}

Extensibility. We can extend the mechanism and when done exactly the same syntax works with our own types:

#include <iostream>
#include <string>
using namespace std;
 
// My type
struct MyData
{
     MyData(const char* pName, int Age): m_Name(pName), m_Age(Age) {}
     string m_Name;
     int m_Age;
};
 
ostream& operator<<(ostream& stm, const MyData& data)
{
     stm << "Name: " << data.m_Name << " (" << data.m_Age << ")";
     return stm;
}
 
int main(int argc, char* argv[])
{
     MyData Person("Bob", 20);
     cout << Person << endl;
 
     return 0;
}

And lastly, type safety. No fprintf evil which result if the type and the format string don't match.

Steve

PJ Arends5-Feb-06 18:51

PJ Arends

5-Feb-06 18:51

You are not missing anything. C++ just ends up calling the C functions anyway. fstream.open() calls fopen() which end up calling CreateFile(). Same sh*t, different pile.

Christian Graus6-Feb-06 9:00

Christian Graus

6-Feb-06 9:00

I disagree totally. The benefits include object orientation, type safety, custom inserters and extractors. By your logic, we should all be writing programs in assembly, hell, that's what it all ends up as, right ?

Christian Graus - Microsoft MVP - C++

Christian Graus6-Feb-06 9:01

Christian Graus

6-Feb-06 9:01

In addition to the comments that have been made, iostreams is a powerful framework for passing data to any stream ( the obvious, non file examples are the screen and a string ), and in particular, for writing code to encapsulate how your data is passed. I find it much nicer to write an inserter and extractor for a class, so my main code looks like this

myFile << myObject;

Christian Graus - Microsoft MVP - C++

_anil_5-Feb-06 15:58

_anil_

5-Feb-06 15:58

Hi I detect one problem in your code.
you can try it. I am not sure but I think thats the problem.

your code goes like this

...
if(feof(f[x]))
return;

fseek(....);
char v = fgetc(f[x]);

if(x == 0)
fputc(v, outputz);

...

I suggest to put the EOF condition after you read the character.

i.e

fseek(....);
char v = fgetc(f[x]);

if(feof(f[x]))
return;

if(x == 0)
fputc(v, outputz);

Best of luck

Anil

2872: 'IServiceProvider' : ambiguous symbol

Lord Kixdemp8-Feb-06 10:59

Lord Kixdemp

8-Feb-06 10:59

Hmm... I think I'm getting alzheimers now, I remember viewing that last post, but why didn't I reply to it if I was so worried about this program? WTF | :WTF:

Anyways... I tried that, and it didn't work... I'm trying to convert my file handling to C++ style, I'll post back when I get done with that:

http://www.codeproject.com/script/comments/forums.asp?forumid=1647&select=1364465&df=100&fr=575&msg=1364465[^]

Thanks you all! And sorry for the late reply, I really don't know what happened... Confused | :confused:

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

JerryMcguire5-Feb-06 8:46

JerryMcguire

5-Feb-06 8:46

Hi,

I have a project which accesses a database via a database interface class which uses #include <afxdb.h> microsoft library.

In the header file for this database class I have a prototype which passes by reference a CRecordset paramater.

When i add in #include <afxdb.h> in to the header file.

I get the 2872: 'IServiceProvider' : ambiguous symbol

Can anyone help.
To summarise .. I have two files Database.cpp and Database.h. both have to #include <afxdb.h>. When I compile i get the following error. 2872: 'IServiceProvider' : ambiguous symbol.

The class is a general c++ class the compiler is c++ 7.1 and the .net framework is 1.1.

Jerry

Re: 2872: 'IServiceProvider' : ambiguous symbol

ThatsAlok5-Feb-06 17:37

ThatsAlok

5-Feb-06 17:37

JerryMcguire wrote:
I get the 2872: 'IServiceProvider' : ambiguous symbol

Try to use Namespace with the interface while declaring its pointers!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

motherboard serial number in VC++

RomTibi5-Feb-06 7:07

RomTibi

5-Feb-06 7:07

I'm searching for a solution on reading motherboard serial number using VC++. Can someone give me a hint? Need code. Confused | :confused:

Tibi

John M. Drescher5-Feb-06 8:12

5-Feb-06 8:12

You do realize that not all motheboards report the serial number in the bios?

John

RomTibi5-Feb-06 9:52

RomTibi

5-Feb-06 9:52

Yes, but the motherboards that have a sn can reveal it?

John M. Drescher5-Feb-06 10:37

5-Feb-06 10:37

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_bios.asp[^]

John

suchuhui5-Feb-06 19:40

suchuhui

5-Feb-06 19:40

the web-page you given is merely a structure but function,to obtain the concerned information what function I should use ? even though I can get it through that function,but no serial-number is given in the structure .I have
tried to find a way to get the serial number for one of the important device in pc (for instance : main-board cpu hard-disk),but finally I fond out that DiskId is the most suitable one apart from commercial library.

John M. Drescher6-Feb-06 4:39

6-Feb-06 4:39

If you follow the link at the bottom it brings you to an example here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/example__getting_wmi_data_from_the_local_computer.asp[^]

John

suchuhui8-Feb-06 14:41

suchuhui

8-Feb-06 14:41

would you make yourself more explicit ?
this web-page doesn't include any stuff about Win32_BIOS,
perhap I am not qualified enough to disgest that article .
thank you so much .

John M. Drescher6-Feb-06 4:42

6-Feb-06 4:42

suchuhui wrote:
but no serial-number is given in the structure

string SerialNumber;

suchuhui wrote:
fond out that DiskId is the most suitable one apart from commercial library.

I assume you are trying to do some kind of licence / copy protection and generally diskid/macaddress are the things used in this case.

John

John M. Drescher6-Feb-06 4:47

6-Feb-06 4:47

suchuhui wrote:
but no serial-number is given in the structure

string SerialNumber;
Is part of the structure.

suchuhui wrote:
fond out that DiskId is the most suitable one apart from commercial library.

I assume you are trying to do some kind of licence / copy protection and generally diskid/macaddress are the things used in this case.

John