关于CreateFile打开调制解调器串口的问题。

[hjhwolffie]

win2000下安装一软猫，系统分配port是COM13，用CreateFile无法成功打开。

//-------代码如下，打开COM1, COM2都是可以成功的，不知和软猫有没有关系
//-------或者CreateFile打开串口只能是COM1到COM9？？？可有人能告诉我？？

hCom = CreateFile( buf,
GENERIC_READ | GENERIC_WRITE,
0, // comm devices must be opened w/exclusive-access
NULL, // no security attributes
OPEN_EXISTING, // comm devices must use OPEN_EXISTING
0, // not overlapped I/O
NULL // hTemplate must be NULL for comm devices
);
if(INVALID_HANDLE_VALUE == hCom) {
WriteDebug(ERROR_LEVEL,"OpenComPort","Failed to open %s!\n",buf);
return NULL;

[hjhwolffie]

问题已经解决，分数我就自己留着了。

hCom = CreateFile( "\\\\.\\COM13",
GENERIC_READ ¦ GENERIC_WRITE,
0, // comm devices must be opened w/exclusive-access
NULL, // no security attributes
OPEN_EXISTING, // comm devices must use OPEN_EXISTING
0, // not overlapped I/O
NULL // hTemplate must be NULL for comm devices
);