C++: alle Dateien eines Ordners nach Inhalt durchsuchen

#include <windows.h>
#include <vector> 
#include <string> 

int main()
{
    std::vector<std::string> dir; 
    WIN32_FIND_DATA data; 
    HANDLE hFile = FindFirstFileA("\\Pfad\\*.svg", &data); 
    
    if(data.dwFileAttributes);
    {
    do
    {
    MessageBox(NULL, data.cFileName, "Gefunden", MB_OK);
    dir.push_back(std::string(data.cFileName));
    }     
    while(FindNextFile(hFile, &data));     
    }
}

  string svg[255];
  int count;
  WIN32_FIND_DATA daten;

  HANDLE h=FindFirstFile("c:\\*.*", &daten);
  if(INVALID_HANDLE_VALUE==h) return(1);

  do  
    {  
      // Datei?
      if (daten.dwFileAttributes != FILE_ATTRIBUTE_DIRECTORY) 
      {        
      svg[count] = daten.cFileName;
	  count++;
	  } 
             
    }  while(FindNextFile(h, &daten));