Re: Bug in my C++ program seems really strange. (Update on debugging progress)

* Gianni Mariani:


Changes to make it /compile/:

fracalg\computefrac.cpp(371):#if 0 //APS

fracalg\computefrac.cpp(378):#endif //APS

fracalg\computefrac.cpp(393):#if 0 //APS

fracalg\computefrac.cpp(396):#else //APS

fracalg\computefrac.cpp(397): err = FG3DError(FG3D_INVALID_FRACTAL_TYPE,
FractalType); //APS

fracalg\computefrac.cpp(398):#endif //APS
render\render.cpp(51): //APS MessageBox(NULL, TEXT("Zorg."),
TEXT(""), MB_OK);

render\render.cpp(69): //APS MessageBox(NULL, TEXT("Borg."),
TEXT(""), MB_OK);

win32\CMainWnd.cpp(52): wcx.hCursor = LoadCursor(0,
IDC_ARROW); //APS LoadCursor((HANDLE)NULL, IDC_ARROW); /* cursor */

win32\fg3dImageWindow.cpp(34): wcx.hCursor =
LoadCursor(0,IDC_ARROW); //APS //LoadCursor((HANDLE)NULL, IDC_ARROW); /*
cursor */

win32\fg3dNewImageWzrd.cpp(18)://APS HWND gTmp;

win32\fg3dNewImageWzrd.cpp(32)://APS gTmp = hwndTmp;

main.h(108)://APS extern HWND gTmp;

fracgen3d.cpp(79):// APS

Plus, the WinMain function must be changed to something like

int WINAPI WinMain(HINSTANCE TheInstance, HINSTANCE LastInstance,
                    LPSTR lpszCmdLine, int iCmdShow)
{
     __try
     {
         return cppWinMain( TheInstance, LastInstance, lpszCmdLine,
iCmdShow );
     }
     __except(TRUE)
     {
         TCHAR szBuf[256];
         StringCchPrintf(szBuf, 256, TEXT("EXCEPTION %08lX"),
GetExceptionCode());
         OutputDebugString(szBuf);
         return 0;
     }
}

where cppWinMain contains the original code for that __try.

It's funny (is that the right word?) when the code contains C style
casts that makes it not compile, when all that's needed is to remove
those casts...

Having done all the above the program crashes on using an invalid
pointer txtrptr in [render.cpp] at line 62, which is due to using an
uninitialized member "d3dlr" (presumably there should have been an
earlier call to FractalImage::LockRectangle, but no such).

Yes, I must be very bored to do such a thing! :-)

Cheers, & hth. (although I didn't look at the silly bignum class,
whatever its fault is, it may just be corrupted memory in general),

- Alf

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