Mega Code Archive
How to map a network drive (2)
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Title: How to map a network drive (2)
function ConnectDrive(_drvLetter: string; _netPath: string; _showError: Boolean;
_reconnect: Boolean): DWORD;
var
nRes: TNetResource;
errCode: DWORD;
dwFlags: DWORD;
begin
{ Fill NetRessource with #0 to provide uninitialized values }
FillChar(NRes, SizeOf(NRes), #0);
nRes.dwType := RESOURCETYPE_DISK;
{ Set Driveletter and Networkpath }
nRes.lpLocalName := PChar(_drvLetter);
nRes.lpRemoteName := PChar(_netPath); { Example: \\Test\C }
{ Check if it should be saved for use after restart and set flags }
if _reconnect then
dwFlags := CONNECT_UPDATE_PROFILE and CONNECT_INTERACTIVE
else
dwFlags := CONNECT_INTERACTIVE;
errCode := WNetAddConnection3(Form1.Handle, nRes, nil, nil, dwFlags);
{ Show Errormessage, if flag is set }
if (errCode NO_ERROR) and (_showError) then
begin
Application.MessageBox(PChar('An error occured while connecting:' + #13#10 +
SysErrorMessage(GetLastError)),
'Error while connecting!',
MB_OK);
end;
Result := errCode; { NO_ERROR }
end;
function ConnectPrinterDevice(_lptPort: string; _netPath: string; _showError: Boolean;
_reconnect: Boolean): DWORD;
var
nRes: TNetResource;
errCode: DWORD;
dwFlags: DWORD;
begin
{ Fill NetRessource with #0 to provide uninitialized values }
FillChar(NRes, SizeOf(NRes), #0);
nRes.dwType := RESOURCETYPE_PRINT;
{ Set Printername and Networkpath }
nRes.lpLocalName := PChar(_lptPort);
nRes.lpRemoteName := PChar(_netPath); { Example: \\Test\Printer1 }
{ Check if it should be saved for use after restart and set flags }
if _reconnect then
dwFlags := CONNECT_UPDATE_PROFILE and CONNECT_INTERACTIVE
else
dwFlags := CONNECT_INTERACTIVE;
errCode := WNetAddConnection3(Form1.Handle, nRes, nil, nil, dwFlags);
{ Show Errormessage, if flag is set }
if (errCode NO_ERROR) and (_showError) then
begin
Application.MessageBox(PChar('An error occured while connecting:' + #13#10 +
SysErrorMessage(GetLastError)),
'Error while connecting!',
MB_OK);
end;
Result := errCode; { NO_ERROR }
end;
function DisconnectNetDrive(_locDrive: string; _showError: Boolean; _force: Boolean;
_save: Boolean): DWORD;
var
dwFlags: DWORD;
errCode: DWORD;
begin
{ Set dwFlags, if necessary }
if _save then
dwFlags := CONNECT_UPDATE_PROFILE
else
dwFlags := 0;
{ Cancel the connection see also at http://www.swissdelphicenter.ch/en/showcode.php?id=391 }
errCode := WNetCancelConnection2(PChar(_locDrive), dwFlags, _force);
{ Show Errormessage, if flag is set }
if (errCode NO_ERROR) and (_showError) then
begin
Application.MessageBox(PChar('An error occured while disconnecting:' + #13#10 +
SysErrorMessage(GetLastError)),
'Error while disconnecting',
MB_OK);
end;
Result := errCode; { NO_ERROR }
end;
Usage Example:
procedure TForm1.Button1Click(Sender: TObject);
begin
ConnectDrive('h:', '\\Servername\C', True, True);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
DisconnectNetDrive('h:', True, True, True);
end;
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