void Process_File ( wxString SrcDir_path, wxString DestDir_path, wxString FileName)
{
    wxString New_FileName;
    New_FileName = FileName;
 
    wxRegEx re(wxT("\.mp3"),wxRE_ADVANCED|wxRE_ICASE);
    if(re.IsValid() && re.Matches(New_FileName))
    {
        int replaced = re.ReplaceAll(&FileName, wxT("\.txt"));
    }
 
    wxCopyFile(wxString::Format("%s\\%s",SrcDir_path,FileName),
               wxString::Format("%s\\%s",DestDir_path,New_FileName),
               1);
}
 

 
 
-------------- Clean: Release in p-09-12-16-45 (compiler: GNU GCC Compiler)---------------
 
Cleaned "p-09-12-16-45 - Release"
 
-------------- Build: Release in p-09-12-16-45 (compiler: GNU GCC Compiler)---------------
 
mingw32-g++.exe -pipe -mthreads -D__GNUWIN32__ -D__WXMSW__ -DwxUSE_UNICODE -Wno-attributes -Wall  -O2    -ID:\CPP\wxBook\wxWidgets-2.9.5\include -ID:\CPP\wxBook\wxWidgets-2.9.5\contrib\include -ID:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib\mswu -ID:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib\mswu -ID:\CPP\wxBook\wxWidgets-2.9.5\include  -c D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp -o obj\Release\p_09_12_16_45Main.o
D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp: In member function 'void MyFrame::OnGo(wxCommandEvent&)':
D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp:241:44: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp: In function 'void Process_File(wxString, wxString, wxString)':
D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp:331:1: warning: unknown escape sequence: '\.' [enabled by default]
D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp:334:1: warning: unknown escape sequence: '\.' [enabled by default]
D:\wxWidgetsApp\p-09-12-16-45\p_09_12_16_45Main.cpp:334:13: warning: unused variable 'replaced' [-Wunused-variable]
mingw32-g++.exe -LD:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib  -o bin\Release\p-09-12-16-45.exe obj\Release\p_09_12_16_45Main.o   -s -mthreads  -lwxmsw29u -lwxpng -lwxjpeg -lwxtiff -lwxzlib -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -luuid -lcomctl32 -lwsock32 -lodbc32  -mwindows
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0x120): undefined reference to `wx_regfree'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0x3dc): undefined reference to `wx_regfree'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0x5f5): undefined reference to `wx_regerror'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0x634): undefined reference to `wx_regerror'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0xccb): undefined reference to `wx_re_comp'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0xd2c): undefined reference to `wx_regfree'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0x1e24): undefined reference to `wx_regfree'
D:\CPP\wxBook\wxWidgets-2.9.5\lib\gcc_lib/libwxmsw29u.a(monolib_regex.o):regex.cpp:(.text+0x1fab): undefined reference to `wx_re_exec'
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 5 seconds)
8 errors, 4 warnings (0 minutes, 5 seconds)