Total Commander Loader (AntiNag) x64

#include <windows.h>

#pragma comment(linker,"/MERGE:.rdata=.text")
#pragma comment(linker,"/MERGE:.data=.text")
#pragma comment(linker,"/FILEALIGN:512 /SECTION:.text, /IGNORE:4078")
#pragma comment(linker,"/ENTRY:WinMain")

HWND GetButtonHandle(){
  HWND nag = 0;
  HWND result = 0;
  do{
    nag = FindWindowA("TNASTYNAGSCREEN", "Total Commander");
    if (nag != 0){
      HWND notebook = FindWindowExA(nag, NULL, "Window", NULL);
      if (notebook != 0){
        HWND nagpage = FindWindowExA(notebook, NULL, "Window", NULL);
        if (nagpage != 0){
          HWND panel = FindWindowExA(nagpage, NULL, "Window", NULL);
          if (panel != 0){
            HWND panel1 = FindWindowExA(panel, NULL, "Window", NULL);
            if (panel1 != 0){
              char buf[3];
              GetWindowText(panel1, buf, 2);
              switch (atoi(buf)){
                case (1) : {
                  result = FindWindowExA(panel, NULL, "Button", "&1");
                  break;
                }
                case (2) : {
                  result = FindWindowExA(panel, NULL, "Button", "&2");
                  break;
                }
                case (3) : {
                  result = FindWindowExA(panel, NULL, "Button", "&3");
                  break;
                }
                default: result = 0;
              }
            }
          }
        }
      }
    }
  } while (result == 0);
  return result;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdParam, int nCmdShow){
  WinExec("TOTALCMD64.EXE", SW_SHOWNORMAL);
  HWND btn = GetButtonHandle();
  if (btn != 0){
    SendMessage(btn, WM_SETFOCUS, NULL, NULL);
    SendMessage(btn, WM_LBUTTONDOWN, MK_LBUTTON, NULL);
    SendMessage(btn, WM_LBUTTONUP, MK_LBUTTON, NULL);
    HWND tcmd = FindWindow("TTOTAL_CMD", NULL);
    if (tcmd != 0){
      SetWindowText(tcmd, "Total Commander");
    }
  }
  ExitProcess(0);
  return 0;
}