in datei schrieben mit hexcode

hallo ich habe mal eine frage ich möchte gerne eine datei mit mienen programm schreiben was 100% so ist wie die datei wo her ich das kopiert habe( eine anwendung) könnte man den hexcode mit eine hexeditor und dann mit meine programm wieder schrieben?? und wenn ja wie ?

mfg der große bob

ESS_CB

fread und fwrite benutzen

und bei fopen "wb" (schreiben) oder "rb" (lesen) angeben

ähm kannst du mir mal ein beispiel posten??

und funtionier das auch wenn man ne ganze exe kopiert?

mfg

der große bob

Badestrand

Klar funktioniert das auch mit ner Exe-Datei. Aber da wir im WinAPI-Forum sind, hier die WinAPI-Funktionen:
CreateFile
ReadFile
WriteFile
CloseHandle

Edit: Achso, Beispiel...:

HANDLE hFile = CreateFile( "C:\\File.dat", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0, NULL );
if ( hFile != INVALID_HANDLE_VALUE )
{
    DWORD Written;
    WriteFile( hFile, DeinBuffer, DeineBufferGröße, &Written, NULL );
    CloseHandle( hFile );
}

wie geht das damit mach mal beispiel und was muss man includieren?

mfg

der große bob

Badestrand

#include <windows.h>

Beispiel: Siehe Edit... Parameter in der MSDN oder X-beliebiger Windows-Hilfe nachschlagen.

was is mit WriteFile( hFile, DeinBuffer, DeineBufferGröße, &Written, NULL );

gemeint mit buffer?

bin ein kleiner großer noop

plz

mfg

der große bob

Badestrand

Naja, ich schätze mal, du hast deine Daten in einer Variable oder einem Buffer gespeichert. Etwa so:

char a; // Variable
char VieleAs[10000]; // Großer Buffer

In den Variablen kannst du Daten speichern. Und wenn du diese Daten dann in eine Datei speichern willst, musst du die Datenquelle (Variable/Buffer) angeben und halt, wieviele Daten du in die Datei speichern willst.

Angenommen, du willst eine Datei kopieren, aber nicht mit CopyFile, sondern dir selber Code dafür schreiben. Dazu musst du erst die Quell-Datei in einen Buffer einlesen und ihn dann in die neue Datei reinschreiben.
Beispiel:

const char* KopierenVon = "C:\\Datei.txt";
const char* KopierenNach = "C:\\Datei2.txt";

HANDLE hFile = CreateFile( KopierenVon, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL );
if ( hFile != INVALID_HANDLE_VALUE )
{
    DWORD Dummy;
    DWORD FileSize = GetFileSize( hFile, NULL );
    char* Buffer = (char*) LocalAlloc( GMEM_FIXED );
    ReadFile( hFile, Buffer, FileSize, &Dummy, NULL );
    CloseHandle( hFile );

    hFile = CreateFile( KopierenNach, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
    if ( hFile != INVALID_HANDLE_VALUE )
    {
        WriteFile( hFile, Buffer, FileSize, &Dummy, NULL );
        CloseHandle( hFile );

        // ERFOLG
    }

    LocalFree( (HANDLE)Buffer );
}

1330 c:\dev-c_~1\include\winbase.h
too few arguments to function `void * LocalAlloc(unsigned int, unsigned int)'

Badestrand

Hab ich halt mal was falsch gemacht...

char* Buffer = (char*) LocalAlloc( GMEM_FIXED, FileSize );

ESS_CB

ich glaub wir sind wieder bei der Diskusion ob man mit MFC oder API arbeiten sollte. Wieso sind nur alle gegen die API??????

alles looserhafter Scriptkidies

und wie könnte man den hexcode einfüfen also als feste variable speichern?

ESS_CB

char s = HEXCODE; //

fwrite(&s,1,1,pfile);

ich bin zu dumm dafür

CodeFinder

Was stellst du dir eigentlich unter HEXCODE vor...? Sowas: 0x0A 0x24 ...

Oder was ?

@ESS_CB: Ich bin auch gegen MFC .

ich meine sowas

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Badestrand

Und was ist dein Problem dabei, das in ner Datei zu speichern?

ESS_CB schrieb:

ich glaub wir sind wieder bei der Diskusion ob man mit MFC oder API arbeiten sollte. Wieso sind nur alle gegen die API??????

Wer hat was von MFC gesagt?? Ich nehme ja selber Abstand von MFC

ESS_CB

ehm, ok kk akzeptiert

ich hatte die FuncNamen nur überflogen und dachte es sei die CFile-class lool