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#1
May 8th, 2008, 07:24 PM
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'\' messing up Binary Writing
Whenver I have \ in my strings, I cannot write successfully to a binary. In the example below I end up with a bunch of nothing. Weird characters like those classic blocks and ˆQ:. Stuff like that.
 If I have just have regular text it writes fine. Note that PREFERENCES is a struct with two strings in it. Code:
prefs.kmplayerLocation = string("C:\\Program Files\\The KMPlayer\\KMPlayer.exe");
prefs.vlcLocation = string("C:\\Program Files\\VideoLAN\\VLC\\vlc");;
//prefs.kmplayerLocation = "dfasfddas";
//prefs.vlcLocation = "fdafds";
ofstream outfile;
outfile.open("preferences.data",ios::out|ios::binary);
outfile.write(reinterpret_cast<char*>(&prefs),sizeof(PREFERENCES));
outfile.close();
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#2
May 8th, 2008, 08:53 PM
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Code:
outfile.write(reinterpret_cast<char*>(&prefs),sizeof(PREFERENCES)); Note that your struct will contain pointer data even if it doesn't explicitly have members that are pointers if it contains an instance of pretty much any nontrivial STL class (such as std::string), since those will have pointer data themselves.
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#3
May 8th, 2008, 09:36 PM
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You need to serialize that information. Consider overloading the insertion operator, or similar.
__________________
C/C++ pointers (Original in the "Commonly Asked Questions" thread).
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#4
May 9th, 2008, 04:23 AM
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If the compiler is telling you there is an error, listen to it, don't hide the error behind a reinterpret(or other)_cast unless you have a very good reason for doing so.
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#6
May 11th, 2008, 05:24 PM
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@Fuial: what the hell kind advice is that? "Do this. If that doesn't work do the opposite!"
Voodoo is not a commonly accepted technique for programming correctly. One drawback is that it requires a lot of chickens to support the indiscrimant slaughter. Stick to farming. Chicks are cheap compared to buggy, glitchy programs.
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