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monkey04



Joined: 11 Jun 2004
Posts: 4
PostPosted: Fri Jun 11, 2004 4:04 pm    Post subject: Quick Question Reply with quote
Recently, i started trying to make a quick game engine in D to create small win32 games. Today, i tried to seperate the source into various directories (WGE/wgeGraphics, WGE/wgeSound, etc). I updated the module names to directoryName.moduleName, modified the include statments etc. and everything compiles and links fine, however, when i run the program and it tries to acces a member function of one of my imported classes i get an "Access Violation" error. Thanks for any help anyone can provide.
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aldacron



Joined: 05 May 2004
Posts: 1322
Location: Seoul, South Korea
PostPosted: Fri Jun 11, 2004 4:38 pm    Post subject: Reply with quote
My first guess is that you didn't use new to allocate an instance of the class. It's a common mistake people make when coming from C++. See http://www.dsource.org/tutorials/index.php?show_example=80 for an example.

But that is a guess. The problem might be something else entirely. In that case, you need to post the offending code snippet for anyone to do more than guess.
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monkey04



Joined: 11 Jun 2004
Posts: 4
PostPosted: Fri Jun 11, 2004 4:47 pm    Post subject: Reply with quote
Unfortunately, that wasn't it Sad

Here's the code:

Code:

bool Paint(HWND hWnd) {
   try {   
      wgeBeginDraw(&hWnd);
         CLine lines[2];
         lines[0] = new CLine(0.0f, 0.0f, 250.0f, 250.0f),
         lines[1] = new CLine(0.0f, 250.0f, 250.0f, 0.0f);
         lines[0].SetPen(CreatePen(PS_SOLID, 5, RGB(255, 0, 0)));
         lines[1].SetPen(CreatePen(PS_SOLID, 5, RGB(0, 0, 255)));
         lines[0].Draw();
         lines[1].Draw();

         CText text = new CText("Text and Lines Example", 50.0f, 118.0f);
         text.SetForeColor(RGB(255, 125, 0));
                text.SetBackColor(RGB(255, 255, 0));
         text.Draw();
      wgeEndDraw(&hWnd);
   } catch (Object oErr) {
      wgeWriteLog(APP_LOG, oErr.toString());
      wgeWriteLog(USER_LOG, oErr.toString());
      return false;
   }
   return true;
}


The non-member functions (wgeBeginDraw(), wgeWriteLog, and wgeEndDraw()) don't cause any problems. It's only when i try to access one of the member functions that problems happen (this includes the constructors).
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monkey04



Joined: 11 Jun 2004
Posts: 4
PostPosted: Fri Jun 11, 2004 5:37 pm    Post subject: Reply with quote
I guess i should add that all of this worked 100? fine before i moved the source files into seperate folders based on their modules. It might help if someone could list a quick reference to how to do this so i can see if i left something out.
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monkey04



Joined: 11 Jun 2004
Posts: 4
PostPosted: Fri Jun 11, 2004 6:38 pm    Post subject: Fixed Reply with quote
Ok forget it. I'm a complete idiot. I forgot that I'd changed my Vertex struct to a class, and i wasn't initializing it with new. You were right all along... Sad . At least its fixed now though, thanks for your time.
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