VC编程通过访问注册表得到串口数量的代码

Question

本帖最后由 bjfscasm 于 2010-05-29 16:58:00 编辑

Answer 1

SHORT RWCenter::GetAllComm(){
HKEY hKey;
LONG ret;
SHORT retVal = 0;
OSVERSIONINFO  osvi;
BOOL bOsVersionInfoEx; TCHAR keyinfo[100],comm_name[200],ValueName[200];
int i;
DWORD sType,Reserved,cbData,cbValueName; ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); memset(keyinfo,0,100*sizeof(TCHAR));
_tcscpy_s(keyinfo,_T("HARDWARE\\DEVICEMAP\\SERIALCOMM")); i=0; sType=REG_SZ;Reserved=0;
bOsVersionInfoEx =GetVersionEx(&osvi); ret=RegOpenKeyEx(HKEY_LOCAL_MACHINE,keyinfo,0,KEY_ALL_ACCESS,&hKey); if (ret==ERROR_SUCCESS)
{
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
do 
{
cbData=200;cbValueName=200;
memset(comm_name,0,200); 
memset(ValueName,0,200); ret=RegEnumValue(hKey,i,ValueName,&cbValueName,NULL,&sType,(LPBYTE)comm_name,&cbData);
if (ret==ERROR_SUCCESS)
{
 //m_list.Add(comm_name);
 int temp;
 temp = _tstoi(&comm_name[3]);
 retVal |= 1 << (temp -1);
 i++;
}
}while (ret==ERROR_SUCCESS);
}
} //CString strPortName = GetSetComName();
//m_ctrlPort.SetWindowText(strPortName);
RegCloseKey(hKey);

return retVal;
}