Casting from DWORD to a string of a hex
Author
Basically, I have DWORD colour values that I need to convert into a hexadecimal and then a string, using C++.
I have no idea what to use to do this. My first try involved stringstream(stringversion) << hex << theDWORD but that just gave me an empty string...
Author
Sure, here's what I have:
pixels is an array with a struct containing a DWORD 'col' and a string 'strrep'.
stringstream(pixels.strrep) << hex << pixels.colpixels is an array with a struct containing a DWORD 'col' and a string 'strrep'.
How are you trying to get the string out of that? It looks like you're creating the stringstream as a temporary.
Quote:Original post by DeathRay2K
Sure, here's what I have:stringstream(pixels.strrep) << hex << pixels.col
pixels is an array with a struct containing a DWORD 'col' and a string 'strrep'.
That stringstream you're inserting characters into is a temporary object. How do you plan to refer to it later in order to extract your newly formatted string?
Do something like this:
stringstream stringify = pixels.strrep;
stringify << hex << pixels.col
cout << stringify.str() << endl;
Quote:Original post by DeathRay2K
I'm not trying to output the value, I'm trying to put it in pixels.strrep
Then copy the stringstream's string into your string:
stringstream stringify = pixels.strrep;
stringify << hex << pixels.col
pixels.strrep = stingify.str();
... or something similar.
[Edited by - fpsgamer on May 24, 2008 7:42:17 PM]
Author
Alright, I've tried that, but I get 3 errors:
Quote:
1>c:\users\garnet\code\shmup\particl\d2kimage.cpp(51) : error C2440: 'initializing' : cannot convert from 'std::string' to 'std::basic_stringstream<_Elem,_Traits,_Alloc>'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>,
1> _Alloc=std::allocator<char>
1> ]
1> Constructor for class 'std::basic_stringstream<_Elem,_Traits,_Alloc>' is declared 'explicit'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>,
1> _Alloc=std::allocator<char>
1> ]
1>c:\users\garnet\code\shmup\particl\d2kimage.cpp(53) : error C2065: 'stingify' : undeclared identifier
1>c:\users\garnet\code\shmup\particl\d2kimage.cpp(53) : error C2228: left of '.str' must have class/struct/union
1> type is ''unknown-type''
stringstream might have an explicit constructor.
Initialize it this way:
stringstream stringify(pixels.strrep);
Initialize it this way:
stringstream stringify(pixels.strrep);
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