C / C++ / MFC

#include <atlbase.h>
#include <iostream>
#include <fstream>
 
using namespace std;
 
int main(void)
{
  USES_CONVERSION;
 
  ofstream ofs("out.txt");
 
  ofs<<W2CA(L"Büro")<<endl;
 
  return 0;
}

CDocument *pDoc = GetDocument() ;
POSITION pos = pDoc->GetFirstViewPosition() ;
CView *pView = pDoc->GetNextView(pos) ;
if (pView->IsKindOf(RUNTIME_CLASS(CTreeView))
    pView->OnPrint() ; // or the function you put this code in
else if (pos)
    {
    pView = pDoc->GetNextView(pos) ;
    if (pView->IsKindOf(RUNTIME_CLASS(CTreeView))
        pView->OnPrint() ; // or the function you put this code in
    }