Terminating a process - c++

Question

We have an application that has 3 processes as shown in the image below.
What I wanted to do is to terminate these processes. After reading a few tutorials, I was able to collate these codes. However, it's not working properly. The output is shown after the code.
HANDLE hProcessSnap;
PROCESSENTRY32 pe32;
hProcessSnap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
pe32.dwSize = sizeof( PROCESSENTRY32 );
std::string message = "";
int processCounter = 0;
while( Process32Next( hProcessSnap, &pe32 ) ) {
char ch[260];
char DefChar = ' ';
WideCharToMultiByte(CP_ACP,0,pe32.szExeFile,-1, ch,260,&DefChar, NULL);
//A std:string using the char* constructor.
std::string process(ch);
if( process == "bridge.exe" ) {
std::wstring stemp = std::wstring(process.begin(), process.end());
LPCWSTR sw = stemp.c_str();
HWND windowHandle = FindWindowW( NULL, sw );
DWORD* dwProcessId = new DWORD;
GetWindowThreadProcessId( windowHandle, dwProcessId );
message.append( process );
message.append( "-" );
std::ostringstream converter;
converter << *dwProcessId;
message.append( converter.str() );
message.append( "-" );
DWORD dwDesiredAccess = PROCESS_TERMINATE;
BOOL bInheritHandle = FALSE;
HANDLE hProcess = OpenProcess(dwDesiredAccess, bInheritHandle, *dwProcessId);
if( hProcess == NULL ) {
BOOL result = TerminateProcess(hProcess, 0);
message.append( "NULL" );
}
message.append( "\n" );
CloseHandle(hProcess);
}
}
This is the output:
bridge.exe-4597928-NULL
bridge.exe-4597568-NULL
bridge.exe-4587524-NULL
hProcess returns NULL. What did I miss? Thanks.