Delphi Örnekleri

Clipboard'a kopyalama ve yapistirma (copy,past)
procedure CopyButtonClick(Sender: TObject);
begin
If ActiveControl is TMemo then TMemo(ActiveControl).CopyToClipboard;
If ActiveControl is TDBMemo then TDBMemo(ActiveControl).CopyToClipboard;
If ActiveControl is TEdit then TEdit(ActiveControl).CopyToClipboard;
If ActiveControl is TDBedit then TDBedit(ActiveControl).CopyToClipboard;
end;

procedure PasteButtonClick(Sender: TObject);
begin
If ActiveControl is TMemo then TMemo(ActiveControl).PasteFromClipboard;
If ActiveControl is TDBMemo then TDBMemo(ActiveControl).PasteFromClipboard;
If ActiveControl is TEdit then TEdit(ActiveControl).PasteFromClipboard;
If ActiveControl is TDBedit then TDBedit(ActiveControl).PasteFromClipboard;
end;

TStringgrid'i kaydetme ve açma

Procedure SaveGrid;
var
f:textfile;
x,y:integer;
begin
assignfile (f,'Filename');
rewrite (f);
writeln (f,stringgrid.colcount);
writeln (f,stringgrid.rowcount);
For X:=0 to stringgrid.colcount-1 do
For y:=0 to stringgrid.rowcount-1 do
writeln (F, stringgrid.cells[x,y]);
closefile (f);
end;

Procedure LoadGrid;
var
f:textfile;
temp,x,y:integer;
tempstr:string;
begin
assignfile (f,'Filename');
reset (f);
readln (f,temp);
stringgrid.colcount:=temp;
readln (f,temp);
stringgrid.rowcount:=temp;
For X:=0 to stringgrid.colcount-1 do
For y:=0 to stringgrid.rowcount-1 do begin
readln (F, tempstr);
stringgrid.cells[x,y]:=tempstr;
end;
closefile (f);

Avi dosyasinin görünüm alanini seçilen panele esitleme

begin
with MediaPlayer1 do begin
DeviceType := dtAutoSelect;
visible := false;
FileName := InputBox('AVI', 'Enter AVI file name', 'c:\windows\borland.avi');
display := panel1;
open;
DisplayRect := rect(0, 0, panel1.width, panel1.height); {This is it!}
rewind;
play;
end;
end;
Windows'a çizgi çizmenin farkli bir yolu

procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
var dc:hdc;
begin
dc:=getdc(0);
Windows.LineTo(dc,x,y);
end;

end.
Memo componentindeki cursorun pozisyonunu bulma

procedure TForm1.Button1Click(Sender: TObject);
var
Row, Col: Integer;
begin
Row := SendMessage(Memo1.Handle, EM_LINEFROMCHAR, Memo1.SelStart, 0);
Col := Memo1.SelStart - SendMessage(Memo1.Handle, EM_LINEINDEX, Row, 0);
Label1.caption := 'Row= ' + IntToStr(Row+1) + ' Col= ' + IntToStr(Col+1);
end;
Form üstüne dbclick yapilinca maximisize (tam ekran) olmasi

type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
procedure WMNCHitTest(var M: TWMNCHitTest); message wm_NCHitTest;
end;

var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.WMNCHitTest(var M: TWMNCHitTest);
begin
inherited;
if M.Result = htClient then
M.Result := htCaption;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
Close;
end;
end.
Control paneldeki bölümleri açma (cpl dosyalarini açma)

unit open_cpl;

interface

function RunControlPanelApplet( sAppletFileName : string) : integer;

implementation

uses Windows;

function RunControlPanelApplet( sAppletFileName : string) : integer;
begin
Result := WinExec( PChar('rundll32.exe shell32.dll,'+ 'Control_RunDLL '+sAppletFileName), SW_SHOWNORMAL);
end;

end.


access.cpl: Accessibility Properties
appwiz.cpl: Add/Remove Programs Properties
desk.cpl: Display Properties
intl.cpl: Regional Settings Properties
joy.cpl: Joystick Properties
main.cpl: Mouse Properties
mmsys.cpl: Multimedia Properties
modem.cpl: Modems Properties
sysdm.cpl: System Properties
timedate.cpl: Time/Date Properties
Kullanilan printer adi

uses Printers;
function GetDefaultPrinterName : string;
begin GetDefaultPrinterName := Printer.Printers[ Printer.PrinterIndex ];
end;
Cd sürücüsünün seri numarasi

function GetDiskVolSerialID( cDriveName : char ) : DWord;
var dwTemp1, dwTemp2 : DWord;
begin GetVolumeInformation( PChar( cDriveName + ':\' ), Nil, 0, @Result, dwTemp2, dwTemp2, Nil, 0 );
end;

MessageDlg( 'Serial number: ' + Format( '%X', [ GetDiskVolSerialID( 'E' ) ] ),
mtInformation, [mbOk], 0 );
Capslock'un durumunu ögrenme

function IsCapsLockOn : boolean;
begin Result := 0 <> (GetKeyState(VK_CAPITAL) and $01);
end;
Renklerin hex degerlerini bulma

function
TColorToHex( Color : TColor ) : string;
begin
Result := IntToHex( GetRValue( Color ), 2 ) + IntToHex( GetGValue( Color ), 2 ) + IntToHex( GetBValue( Color ), 2 );
end;
Cursor'u gizleyip tekrar gösterme
Showcursor(true); //cursoru göster
Showcursor(false); //cursoru gizle