Visual Basic, API - Opening a Comm port -NT

API - Opening a Comm port -NT

Author	Message
RP #1 / 3	API - Opening a Comm port -NT Having a problem with opening a port on NT op sys. Using r = CreateFile("COM2", GENERIC_READ or GENERIC_WRITE, 0,0, OPEN_EXISTING, 0,0) but ... it always returns INVALID_HANDLE_VALUE All per Dan Appleman's VB 5.0 Programmers Guide to API and the KB documentation. Harware ok - everthing work with MSComm. Any ideas ???
Tue, 06 Feb 2001 03:00:00 GMT

Steve Bre #2 / 3	API - Opening a Comm port -NT Check out this site: www.microsoft.com/win32dev/base/serial.htm Steve Quote: >Having a problem with opening a port on NT op sys. >Using >r = CreateFile("COM2", GENERIC_READ or GENERIC_WRITE, 0,0, >OPEN_EXISTING, 0,0) >but ... >it always returns INVALID_HANDLE_VALUE >All per Dan Appleman's VB 5.0 Programmers Guide to API and the KB >documentation. >Harware ok - everthing work with MSComm. >Any ideas ???
Tue, 06 Feb 2001 03:00:00 GMT

Thomas Lu #3 / 3	API - Opening a Comm port -NT Check out the book The Visual Basic Programmers Guide to Serial Communications by Richard Grier You should be able to get it at Amazon.com Quote: >Having a problem with opening a port on NT op sys. >Using >r = CreateFile("COM2", GENERIC_READ or GENERIC_WRITE, 0,0, >OPEN_EXISTING, 0,0) >but ... >it always returns INVALID_HANDLE_VALUE >All per Dan Appleman's VB 5.0 Programmers Guide to API and the KB >documentation. >Harware ok - everthing work with MSComm. >Any ideas ???
Mon, 12 Feb 2001 03:00:00 GMT

Page 1 of 1

[ 3 post ]