function GetOpenFileNameMulti(const Prompt: String; var FileNameList: TStrings; const InitialDirectory, Filter, DefaultExtension: String): Boolean;
Displays a dialog box that enables the user to select one or more existing file(s). Returns True if the user selected a file, False otherwise. The name of the selected file(s) is returned in the FileNameList list.
An example Filter: 'Text files (*.txt)|*.txt|All files (*.*)|*.*'
var
FileNameList: TStrings;
begin
// Create the list
FileNameList := TStringList.Create;
try
if GetOpenFileNameMulti('', FileNameList, '',
'Text Documents (*.txt)|*.txt|All Files|*.*', 'txt') then
begin
// Successful; user clicked OK
// FileNameList contains the selected filename(s)
end;
finally
FileNameList.Free;
end;
end;