Нижеописанный код создает, сохраняет и загружает конфигурационный файл и изменяет размеры столбцов таблицы DBGRID uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
Dialogs, Grids, DBGrids, Db, DBTables, StdCtrls, IniFiles;
...
procedure TMainForm.NewIni(const NomeIni: string);
var
F: System.Text;
i: Byte;
begin
System.Assign(F, NomeIni);
System.ReWrite(F);
System.WriteLn(F, '[Campi_Ordine]');
for i:=1 to Table1.FieldCount do
System.WriteLn(F, 'Campo',i,'=',Table1.Fields[i-1].FieldName);
System.WriteLn(F, '');
System.WriteLn(F, '[Campi_Size]');
for i:=1 to Table1.FieldCount do
System.WriteLn(F, 'Campo',i,'=',Table1.Fields[i-1].DisplayWidth);
System.Close(F);
end;
procedure TMainForm.SaveIni(const FN: string);
var
Ini: TIniFile;
i: Integer;
S : string;
begin
NewIni(FN);
Ini := TIniFile.Create(FN);
with Ini do begin
for i:=1 to Table1.FieldCount do
begin
S:= Table1.Fields[i-1].FieldName;
WriteString('Campi_Ordine', 'Campo'+IntToStr(i),
Table1.Fields[i-1].FieldName);
WriteInteger('Campi_Size', 'Campo'+IntToStr(i),
Table1.Fields[i-1].DisplayWidth);
end;
end;
Ini.Free;
end;
procedure TMainForm.LoadIni(const FN: string);
var
Ini: TIniFile;
i: Integer;
j: Longint;
S: string;
function MyReadInteger(const Section, Ident: string): Longint;
begin
result := Ini.ReadInteger(Section, Ident, -1);
if result=-1 then
raise Exception.Create('Errore nel file di configurazione.');
end;
function MyReadString(const Section, Ident: string): string;
begin
result := Ini.ReadString(Section, Ident, '');
if result='' then
raise Exception.Create('Errore nel file di configurazione.');
end;
begin
Ini := TIniFile.Create(FN);
try
with Ini do
begin
for i:=1 to Table1.FieldCount do
begin
S:= MyReadString('Campi_Ordine', 'Campo'+IntToStr(i));
j:= MyReadInteger('Campi_Size', 'Campo'+IntToStr(i));
Table1.FieldByName(S).index := i-1;
Table1.FieldByName(S).DisplayWidth := j;
end;
end;
finally
Ini.Free;
end;
end;
