Rudi
2003-04-30, 16:05:12
Ich hätte hier mal ein Code-Snippet, was bei mir eine Access-Violation bringt, ich bin mir ziemlich sicher, zu wissen warum, allerdings wären ein paar Resultate von anderen zur Vergewisserung ganz gut.
Am liebsten wären mir folgende Testbedingungen:
Win98 (SE) als OS
Der gcc is' als Kompiler Vorraussetzung:
gcc 3.2 (mingw special 20020817-1)
mit folgender Kommandozeile:
"Compiler: Default compiler
Building Makefile: "C:\Eigene Dateien\MyProjects\SegFaultTest\Makefile.win"
Führt make clean aus
rm -f winmain.o SegFaultTest2.exe
g++.exe -D__DEBUG__ -c winmain.cpp -o winmain.o -I"C:/PROGRAMME/DEV-CPP/include/c++" -I"C:/PROGRAMME/DEV-CPP/include/c++/mingw32" -I"C:/PROGRAMME/DEV-CPP/include/c++/backward" -I"C:/PROGRAMME/DEV-CPP/include" -g3
g++.exe -D__DEBUG__ winmain.o -o "SegFaultTest2.exe" -L"C:/PROGRAMME/DEV-CPP/lib" -L"C:/Programme/Dev-Cpp/lib/DxLibs" -mwindows
Ausführung beendet
Kompilierung erfolgreich
"
Die Verzeichnisse sind egal ;), aber es kommt mir halt auf die Compiler-Schalter an.
Nun der Code:
#include <windows.h>
#include <stdio.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
void CallMe(HWND, UINT, HINSTANCE, HINSTANCE);
void DoSomething(void);
/* Make the class name into a global variable */
char szClassName[ ] = "WindowsApp";
FILE * stream = NULL;
unsigned char ksarray[256];
unsigned char ToAsciiTable[256][256];
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default color as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);
CallMe(hwnd, 12345, hThisInstance, hPrevInstance);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) /* handle the messages */
{
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
void CallMe(HWND hwnd, UINT number, HINSTANCE hInstance, HINSTANCE prevInstance)
{
DoSomething();
if(prevInstance != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "prevInstance branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "prevInstance branch reached !\n");
fclose(stream);
}
if(hInstance != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hInstance branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hInstance branch reached !\n");
fclose(stream);
}
if(number != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "number branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "number branch reached !\n");
fclose(stream);
}
if(hwnd != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hwnd branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hwnd branch reached !\n");
fclose(stream);
}
}
void DoSomething()
{
WORD output;
int k=0,i=0,s=0;
for (k=0; k<=255; k++)
{
ksarray[k]=0;
}
for (i=0; i<=255; i++)
{
for (s=0; s<=255; s++)
{
if(ToAscii(i,s,&ksarray[0],&output,0))
{
ToAsciiTable[i][s] = (unsigned char)output;
}
else
{
ToAsciiTable[i][s] = 0;
}
}
}
}
Danke im Vorraus für die Mühe,falls die sich jemand macht. :D
Am liebsten wären mir folgende Testbedingungen:
Win98 (SE) als OS
Der gcc is' als Kompiler Vorraussetzung:
gcc 3.2 (mingw special 20020817-1)
mit folgender Kommandozeile:
"Compiler: Default compiler
Building Makefile: "C:\Eigene Dateien\MyProjects\SegFaultTest\Makefile.win"
Führt make clean aus
rm -f winmain.o SegFaultTest2.exe
g++.exe -D__DEBUG__ -c winmain.cpp -o winmain.o -I"C:/PROGRAMME/DEV-CPP/include/c++" -I"C:/PROGRAMME/DEV-CPP/include/c++/mingw32" -I"C:/PROGRAMME/DEV-CPP/include/c++/backward" -I"C:/PROGRAMME/DEV-CPP/include" -g3
g++.exe -D__DEBUG__ winmain.o -o "SegFaultTest2.exe" -L"C:/PROGRAMME/DEV-CPP/lib" -L"C:/Programme/Dev-Cpp/lib/DxLibs" -mwindows
Ausführung beendet
Kompilierung erfolgreich
"
Die Verzeichnisse sind egal ;), aber es kommt mir halt auf die Compiler-Schalter an.
Nun der Code:
#include <windows.h>
#include <stdio.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
void CallMe(HWND, UINT, HINSTANCE, HINSTANCE);
void DoSomething(void);
/* Make the class name into a global variable */
char szClassName[ ] = "WindowsApp";
FILE * stream = NULL;
unsigned char ksarray[256];
unsigned char ToAsciiTable[256][256];
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default color as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);
CallMe(hwnd, 12345, hThisInstance, hPrevInstance);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) /* handle the messages */
{
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
void CallMe(HWND hwnd, UINT number, HINSTANCE hInstance, HINSTANCE prevInstance)
{
DoSomething();
if(prevInstance != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "prevInstance branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "prevInstance branch reached !\n");
fclose(stream);
}
if(hInstance != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hInstance branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hInstance branch reached !\n");
fclose(stream);
}
if(number != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "number branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "number branch reached !\n");
fclose(stream);
}
if(hwnd != 0)
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hwnd branch reached !\n");
fclose(stream);
}
else
{
stream = fopen("bla.txt", "wb");
fprintf(stream, "hwnd branch reached !\n");
fclose(stream);
}
}
void DoSomething()
{
WORD output;
int k=0,i=0,s=0;
for (k=0; k<=255; k++)
{
ksarray[k]=0;
}
for (i=0; i<=255; i++)
{
for (s=0; s<=255; s++)
{
if(ToAscii(i,s,&ksarray[0],&output,0))
{
ToAsciiTable[i][s] = (unsigned char)output;
}
else
{
ToAsciiTable[i][s] = 0;
}
}
}
}
Danke im Vorraus für die Mühe,falls die sich jemand macht. :D