mciSendString randomly stops working

0
votes

My code

    char MusicLoc [50][200];
    char Music [50][50];
    int MusicBox(int IndexMusic)
    {
    std::string rawloc = ((std::string)"open \""+MusicLoc[IndexMusic]+Music[IndexMusic]+"\"type mpegvideo alias "+Music[IndexMusic]);`
    mciSendString(rawloc.c_str(), NULL, 0, 0); 
    mciSendString(((std::string)"play "+Music[IndexMusic]).c_str(), NULL, 0, 0);
    return 0;
    }

MusicLoc contains the path and Music contains the filename, so MusicLoc[1]+Music[1] would be C:\etc\etc\etc\audio.mp3 , it worked fine at first but then it randomly stopped working , I have tried everything and it doesn't work so I am gonna guess using mciSendString isn't recomended, so does anyone knows about a good and lightweight audio library?

Edit: The first mciSendString returns 266, and the second one return 275, if its of any use, but I really haven't found good documentation about them.

Also GetLastError says there is no error...

1
c++audiomcisendstring
Have you checked that the strings you generate are okay? – Some programmer dude
Well, OpenAL is a good and lightweight library. – Lyubomir Vasilev
The strings are okay, they all show what I intended in debug mode – Bob

1 Answers

0
votes

If there is no error, the return from mciSendString should be zero. Your question suggests that you are getting errors!

To decode the errors nicely, use mciGetErrorString

Something like this ( ripped from my code, so you will have to adjust variable names, etc )

    wchar_t cmd[250];
    swprintf(cmd,249,L"open %s alias an1",fname1.c_str());
    err = mciSendString(cmd, 0, 0, 0 );
    if( err ) throw err;

...

catch ( unsigned int& err ) {
    wprintf(L"Playing %s %s %s\n",fname1.c_str(),fname2.c_str(),fname3.c_str());
    wchar_t msg[128];
    mciGetErrorString( err, msg,128 );
    wprintf(L"%s\n",msg);