Title: Search/Replace selected items
Question: How can I search for a string in (eg) a tListBox and then
only have repolaced the selected lines/items changed?
Answer:
Here's a project that shows how to search for a string in
a StringList, have those put into a tCheckListBox and then
have the user select which of those found lines/items must be
replaced.You can also learn how to set/chang/use flags as the
programm runs.
I am using a TabbedNotebook; on the 1st page, I put the
ListBox with some strings and on the 2nd. a tCheckListBox;
you need two checkboxes (for the flags, two bitbtns and two
TEdits). I entered it with Delphi 5.
If you want the project, just e-mail me......
Omer Yasar Can omercan@home.nl
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, Buttons, rsStorage, rsBinData, ComCtrls, rsIniData, ExtCtrls,
Tabnotbk, CheckLst;
type
TForm1 = class(TForm)
rsStorage1: TrsStorage;
BitBtn_SearchAndReplaceAndSave: TBitBtn;
StatusBar1: TStatusBar;
rsIniData1: TrsIniData;
Edit1: TEdit;
Panel1: TPanel;
Edit2: TEdit;
TabbedNotebook1: TTabbedNotebook;
CheckListBox1: TCheckListBox;
ListBox1: TListBox;
BitBtn_ReplaceFound: TBitBtn;
GroupBox1: TGroupBox;
CheckBox_IgnoreCare: TCheckBox;
CheckBox_ReplaceAll: TCheckBox;
Memo1: TMemo;
procedure BitBtn_SearchAndReplaceAndSaveClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure BitBtn_ReplaceFoundClick(Sender: TObject);
procedure CheckBox_IgnoreCareClick(Sender: TObject);
procedure CheckBox_ReplaceAllClick(Sender: TObject);
private
{ Private-Deklarationen }
public
{ Public-Deklarationen }
end;
var
Form1: TForm1;
FoundIndex : array [1..30] of integer; //max-number of lines
mFlags: TReplaceFlags;
implementation
{$R *.DFM}
procedure TForm1.BitBtn_SearchAndReplaceAndSaveClick(Sender: TObject);
var i,j: integer;
foundstr: string;
begin
CheckListBox1.Clear;j:=0;
for i:=0 to ListBox1.Items.count-1 do begin
foundstr:=(StringReplace(ListBox1.Items[i],Edit1.text,Edit2.text,mFlags));
// use flags (see Delphi's help: StringReplace (Funktion))
if foundstr ListBox1.Items[i] then begin
CheckListBox1.Items.Add(foundstr);
FoundIndex[i] := j; inc(j);
end;
end;
TabbedNotebook1.PageIndex:=1;
end;
procedure TForm1.BitBtn_ReplaceFoundClick(Sender: TObject);
var i: integer;
begin
for i:=0 to CheckListBox1.Items.count-1 do
if CheckListBox1.checked[i] then
ListBox1.Items[FoundIndex[i]]:=CheckListBox1.Items[i];
TabbedNotebook1.PageIndex := 0;
end;
//=============================================================================
procedure TForm1.FormCreate(Sender: TObject);
begin
BitBtn_ReplaceFound.caption :=
'now chack the lines you want to' + chr(13) +
'replance and click on this BitBtn';
end;
//=============================================================================
procedure TForm1.CheckBox_IgnoreCareClick(Sender: TObject);
begin // change/set flag (see Delphi's help: StringReplace (Funktion))
if CheckBox_IgnoreCare.checked
then mFlags := mFlags + [rfIgnoreCase]
else mFlags := mFlags - [rfIgnoreCase];
end;
procedure TForm1.CheckBox_ReplaceAllClick(Sender: TObject);
begin // change/set flag (see Delphi's help: StringReplace (Funktion))
if CheckBox_ReplaceAll.checked
then mFlags := mFlags + [rfReplaceAll]
else mFlags := mFlags - [rfReplaceAll];
end;
end.