rewritiing application from delphi to C++

bool TForm4::OpenCOMPort(String Port)
{
wchar_t DeviceName[80];
bool Result;

StrPCopy(DeviceName, (Port));
ComFile = (unsigned int)CreateFile(DeviceName, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);

if(ComFile == INVALID_HANDLE_VALUE ) // IF THE PORT CANNOT BE OPENED, BAIL OUT->
{
Result = false ; //if( ComFile == INVALID_HANDLE_VALUE) Application->Terminate();
}
else
{
Result = true;
}

Having errors like below

[bcc32 Warning] Unit4.cpp(397): W8012 Comparing signed and unsigned values

[bcc32 Error] Unit4.cpp(397): E2034 Cannot convert 'unsigned int' to 'void *'

[bcc32 Warning] Unit4.cpp(405): W8070 Function should return a value

[bcc32 Warning] Unit4.cpp(405): W8004 'Result' is assigned a value that is never used