c++ - How Do I Get mciSendString to Work With Both Variables and Spaces? -

i have created program plays music in music directory , supports spaces, of google. however, don't want keep hard-coding song names, i'm wondering if can replace file name variable, , std::cin variable when program run. however, i want able play songs have spaces in names. made wrapper function (i think count one?) mcisendstring, , i'm trying able pass "name" parameter play. however, due complications lpcwstr , std::string, among other things, i'm having difficulty implementing this.

here's current music function:

 void music(std::string strsongname,dword dwextraflag) {      mcierror me =         mcisendstring(text("open \"d:\\windows.old\\users\\myname\\desktop\\sounds\\music\\song name.mp3\""" type mpegvideo alias song1"),             null, 0, 0);  /* note want able play songs  spaces in name */      if (me == 0)     {         me = mcisendstring(text("play song1 wait repeat"), null, 0, 0);         mcisendstring(text("close song1"), null, 0, 0);     } } 

what want like:

 void music(std::string strname,dword dwextraflag) {      mcierror me =         mcisendstring(text("open \"d:\\windows.old\\users\\myname\\desktop\\sounds\\music\\strnamevariablehere.mp3\""" type mpegvideo alias song1"),             null, 0, 0);  /* note want able play songs  spaces in name */      if (me == 0)     {         me = mcisendstring(text("play song1 wait repeat"), null, 0, 0);         mcisendstring(text("close song1"), null, 0, 0);     } } 

i make variable in main or other function , std::cin variable.

std::string strnameofsong = ""; std::cin >> strnameofsong; 

then, call music like:

music(strnameofsong,0) 

i mention can ignore "dwextraflags" argument if wish, have yet implement.

anyways, appreciate implementing new c++. however, don't want leave project unfinished, , wish complete before moving on.

i appreciate solutions, help, or tips. if want me more specific or provide more information formulate answer, glad so.

thank much.

edit: implemented ethan's suggestion. after adding things in , adding suggestion, program stops working shortly after typing in name of song want. i've tried debugging , reports:

"exception thrown @ 0x00047430 in program.exe: 0xc0000005: access violation writing location 0x6563696e."

here's added main function (aside ethan's suggestion):

  static std::string strsongname = "";     std::cin >> strsongname;     createthread(0, 0, (lpthread_start_routine)&music, &strsongname, 0, 0);     // above createthread can play music while doing other things 

debugging, values seem correct. however, exception , application stops working. how can have access violation?

another small change made ethan's suggestion:

mcierror me =         mcisendstring((lpcwstr)(songfile.c_str()), null, 0, 0); 

(i typecasted songfile giving me errors)

i changed example of path normal.

edit2:

fixed exception! because (in silly manner), forgot dereference pointer "strsongname". however, after space still isn't recognized, seems, debugged it. doesn't seem play songs when not have space, , yes adding .mp3 too.

how one?

void music(std::string strname,dword dwextraflag) { std::string songfile = "open \"d:\\windows.old\\users\\myname\\desktop\\sounds\\music\\"; songfile += strname + "\" type mpegvideo alias song1";  mcierror me =     mcisendstring(songfile.c_str(), null, 0, 0);  /* note want able play songs  spaces in name */  if (me == 0) {     me = mcisendstring(text("play song1 wait repeat"), null, 0, 0);     mcisendstring(text("close song1"), null, 0, 0); } }