Article ID: 105042
Article Last Modified on 6/29/2004
APPLIES TO
- Microsoft Visual FoxPro 3.0 Standard Edition
- Microsoft Visual FoxPro 5.0 Standard Edition
This article was previously published under Q105042
SUMMARY
You can add and remove network connections from within a FoxPro for Windows application by using the Windows application programming interface (API) through FOXTOOLS.FLL, a library file included with FoxPro. To do this, see below.
NOTE: For backward compatibility, Visual FoxPro still supports FOXTOOLS.FLL (included in earlier FoxPro versions), the Visual FoxPro API library that allows calls to 16-bit .DLL functions. However, in Visual FoxPro, the DECLARE command is the preferred method for calling .DLL functions.
MORE INFORMATION
In a program, you must open the FOXTOOLS.FLL external library first. To do this, use the SET LIBRARY TO command as follows to ensure that the program finds the FOXTOOLS.FLL library in the FoxPro directory:
SET LIBRARY TO SYS(2004)+'FOXTOOLS.FLL' ADDITIVERegister the Windows API functions that you would like to call. In this case, use WNetAddConnection() and WNetCancelConnection().
addconn=RegFn('WNetAddConnection','CCC','I') delconn=RegFn('WNetCancelConnection','CI','I')To make a connection to a network device, issue the following command:
=CallFn(addconn,"\\SERVER\SHARE","password","<drive>:")To disconnect a network connection, issue the following command:
=CallFn(delconn,"<drive>:",0)
WNetAddConnection()
The WNetAddConnection() function redirects the specified local device (either a disk drive or a printer port) to the given shared device or remote server. It takes the following parameters:
Parameter Description
-------------------------------------------------------------------
lpszNetPathName A pointer to a null-terminated string specifying
the shared device or remote server, such as
\\SERVER\SHARE.
NOTE: Novell users should not use the double-colon syntax to reference a server and directory, as they may be accustomed to doing. For example, do not try referencing a directory using the following syntax:
\\server\volume::\mydirectory
Instead use this syntax: \\server\volume\mydirectory
lpszPassword A pointer to a null-terminated string specifying
the network password for the given device or
server. If there is no password, you must still
include a placeholder, as follows:
=CallFn(addconn,"\\SERVER\SHARE","","<drive>:")
lpszLocalName A pointer to a null-terminated string specifying
the local drive or device to be redirected. All
lpszLocalName strings (such as LPT1) are
case-independent. Only the drive names A through
Z and the device names LPT1 through LPT3 are
used.
WNetCancelConnection()
The WNetCancelConnection() function cancels a network connection. It takes the following parameters:
Parameter Description
-------------------------------------------------------------------
lpszName A pointer to the name of the redirected local
device (such as LPT1: or D:).
fForce A Boolean value that specifies whether any open
files or open print jobs on the device should be
closed before the connection is canceled.
REFERENCES
For more information about WNetAddConnection() and WNetCancelConnection(), see the Microsoft Windows Software Development Kit (SDK) "Programmer's Reference, Volume 2: Functions," which contains more information about the functions' return values and their meanings.
NOTE: These return values will not be interpreted by FoxPro for Windows.
Additional query words: change net connection
Keywords: kbhowto kbnetwork kbcode KB105042
