EVC下CreateFile编译错误

 

1. BOOL InitPort(HWND  pPortOwner, // the owner (CWnd) of the port (receives message)
2.                            UINT  portnr,        // portnumber (1..4)
3.                            UINT  baud,          // baudrate
4.                            char  parity,        // parity 
5.                            UINT  databits,      // databits 
6.                            UINT  stopbits,      // stopbits 
7.                            DWORD dwCommEvents,  // EV_RXCHAR, EV_CTS etc
8.                            UINT  writebuffersize)   // size to the writebuffer
9. {
10.         HANDLE m_hComm ;
11.         char *szPort = new char[50];
12.     char *szBaud = new char[50];
14.     sprintf(szPort, "COM%d", portnr);
15.     sprintf(szBaud, "baud=%d parity=%c data=%d stop=%d", baud, parity, databits, stopbits);
17.     // get a handle to the port
18.     m_hComm = CreateFileW(szPort,                       // communication port string (COMX)
19.                          GENERIC_READ | GENERIC_WRITE,  // read/write types
20.                          0,                             // comm devices must be opened with exclusive access
21.                          NULL,                          // no security attributes
22.                          OPEN_EXISTING,                 // comm devices must use OPEN_EXISTING
23.                          0,                             // Async I/O
24.                          NULL); 
26. }       

上面的代码在VS2005下编译没有错误，CreateFileW要改为CreateFileA。

 

移到WINCE下就出了小错误。

 

环境：EVC4.0

 

编译错误：

error C2664: 'CreateFileW' : cannot convert parameter 1 from 'char *' to 'const unsigned short *'

 

解决办法：强制转换

m_hComm = CreateFileW((LPCWSTR)szPort,