ein paar antworten...
CreateFile,ReadFile,WriteFile <--- damit zugreiffen..
aus der msdn lib..
-----snip----
Communications Resources
The CreateFile function can create a handle to a communications
resource, such as the serial port COM1. For communications resources,
the dwCreationDisposition parameter must be OPEN_EXISTING, and the
hTemplate parameter must be NULL. Read, write, or read-write access can
be specified, and the handle can be opened for overlapped I/O. For more
information about communications, see Communications.
Disk Devices
Windows NT: You can use the CreateFile function to open a disk drive or
a partition on a disk drive. The function returns a handle to the disk
device; that handle can be used with the DeviceIOControl function. The
following requirements must be met in order for such a call to succeed:
The caller must have administrative privileges for the operation to
succeed on a hard disk drive.
The lpFileName string should be of the form \\.\PHYSICALDRIVEx to
open the hard disk x. Hard disk numbers start at zero. For example:
String Meaning
\\.\PHYSICALDRIVE2 Obtains a handle to the third physical drive on
the user's computer.
The lpFileName string should be \\.\x: to open a floppy drive x or a
partition x on a hard disk. For example:
String Meaning
\\.\A: Obtains a handle to drive A on the user's computer.
\\.\C: Obtains a handle to drive C on the user's computer.
-----snip
und noch ein bisserl mehr infos ;)
---- snip
If the name of the port is \\.\COM10, the correct way to specify the
serial port in a call to CreateFile() is as follows:
CreateFile(
"\\\\.\\COM10", // address of name of the
communications device
fdwAccess, // access (read-write) mode
0, // share mode
NULL, // address of security descriptor
OPEN_EXISTING, // how to create
0, // file attributes
NULL // handle of file with attributes to copy
);
----snip
nun noch mehrere fragen...
willst du c oder cpp nehmen
für cpp... mfc oder anderes widgetset???
wenn mfc => CWnd => SetTimer ;)
wenn du kein von cwnd abgeleitetes klässchen hast (z.b consol prog)
----snip
SetTimer
The SetTimer function creates a timer with the specified time-out
value.
UINT SetTimer(
HWND hWnd, // handle of window for timer messages
UINT nIDEvent, // timer identifier
UINT uElapse, // time-out value
TIMERPROC lpTimerFunc // address of timer procedure
);
----snip
gut ich glaub das sollte reichen....
btw besser als pollen in der mainmsg-loop ist pollen in einem eigenen
thread.... damit blockierst du dein programm nicht unnötig....
falls noch fragen sind....
73
