Programlama yapalım ve Öğrenelim.

Gif component

unit xGif; {$D-}

interface

uses

Windows, Forms, SysUtils, Classes, Graphics;

type

TGifBitmap = class(TBitmap)

public

procedure LoadFromStream(Stream: TStream); override;

end;

type

EGifException = class(Exception)

end;

implementation

uses

Math;

const

{ image descriptor bit masks }

idLocalColorTable = $80; { set if a local color table follows }

idInterlaced = $40; { set if image is interlaced }

idSort = $20; { set if color table is sorted }

idReserved = $0C; { reserved - must be set to $00 }

idColorTableSize = $07; { size of color table as above }

Trailer: byte = $3B; { indicates the end of the GIF data stream }

ExtensionIntroducer: byte = $21;

MAXSCREENWIDTH = 800;

ImageSeparator: byte = $2C;

{ logical screen descriptor packed field masks }

lsdGlobalColorTable = $80; { set if global color table follows L.S.D. }

lsdColorResolution = $70; { Color resolution - 3 bits }

lsdSort = $08; { set if global color table is sorted - 1 bit }

lsdColorTableSize = $07; { size of global color table - 3 bits }

{ Actual size = 2^value+1 - value is 3 bits }

BlockTerminator: byte = 0; { terminates stream of data blocks }

MAXCODES = 4095; { the maximum number of different codes 0 inclusive }

{ error constants }

geNoError = 0; { no errors found }

geNoFile = 1; { gif file not found }

geNotGIF = 2; { file is not a gif file }

geNoGlobalColor = 3; { no Global Color table found }

geImagePreceded = 4; { image descriptor preceeded by other unknown data }

geEmptyBlock = 5; { Block has no data }

geUnExpectedEOF = 6; { unexpected EOF }

geBadCodeSize = 7; { bad code size }

geBadCode = 8; { Bad code was found }

geBitSizeOverflow = 9; { bit size went beyond 12 bits }

geNoBMP = 10; { Could not make BMP file }

ErrName: Array[1..10] of string = (

'GIF file not found',

'Not a GIF file',

'Missing color table',

'Bad data',

'No data',

'Unexpected EOF',

'Bad code size',

'Bad code',

'Bad bit size',

'Bad bitmap');

CodeMask: array[0..12] of Word = ( { bit masks for use with Next code }

$0001, $0003,

$0007, $000F,

$001F, $003F,

$007F, $00FF,

$01FF, $03FF,

$07FF, $0FFF);

type

TDataSubBlock = packed record

Size: byte; { size of the block -- 0 to 255 }

Data: array[1..255] of byte; { the data }

end;

type

THeader = packed record

Signature: array[0..2] of char; { contains 'GIF' }

Version: array[0..2] of char; { '87a' or '89a' }

end;

TLogicalScreenDescriptor = packed record

ScreenWidth: word; { logical screen width }

ScreenHeight: word; { logical screen height }

PackedFields: byte; { packed fields - see below }

BackGroundColorIndex: byte; { index to global color table }

AspectRatio: byte; { actual ratio = (AspectRatio + 15) / 64 }

end;

type

TColorItem = packed record { one item a a color table }

Red: byte;

Green: byte;

Blue: byte;

end;

TColorTable = packed array[0..255] of TColorItem; { the color table }

type

TImageDescriptor = packed record

Separator: byte; { fixed value of ImageSeparator }

ImageLeftPos: word; { Column in pixels in respect to left edge of logical screen }

ImageTopPos: word; { row in pixels in respect to top of logical screen }

ImageWidth: word; { width of image in pixels }

ImageHeight: word; { height of image in pixels }

PackedFields: byte; { see below }

end;

{ other extension blocks not currently supported by this unit

- Graphic Control extension

- Comment extension I'm not sure what will happen if these blocks

- Plain text extension are encountered but it'll be interesting

- application extension }

type

TExtensionBlock = packed record

Introducer: byte; { fixed value of ExtensionIntroducer }

ExtensionLabel: byte;

BlockSize: byte;

end;

PCodeItem = ^TCodeItem;

TCodeItem = packed record

Code1, Code2: byte;

end;

{===============================================================}

{ Bitmap File Structs

{===============================================================}

type

GraphicLine = packed array [0..2048] of byte;

PBmLine = ^TBmpLinesStruct;

TBmpLinesStruct = packed record

LineData : GraphicLine;

LineNo : Integer;

end;

type

{ This is the actual gif object }

PGif = ^TGif;

TGif = class(TObject)

private

FStream : TStream; { the file stream for the gif file }

Header : THeader; { gif file header }

LogicalScreen : TLogicalScreenDescriptor; { gif screen descriptor }

GlobalColorTable : TColorTable; { global color table }

LocalColorTable : TColorTable; { local color table }

ImageDescriptor : TImageDescriptor; { image descriptor }

UseLocalColors : boolean; { true if local colors in use }

Interlaced : boolean; { true if image is interlaced }

LZWCodeSize : Byte; { minimum size of the LZW codes in bits }

ImageData : TDataSubBlock; { variable to store incoming gif data }

TableSize : Word; { number of entrys in the color table }

BitsLeft,

BytesLeft : Integer; { bits left in byte - bytes left in block }

BadCodeCount : word; { bad code counter }

CurrCodeSize : Integer; { Current size of code in bits }

ClearCode : Integer; { Clear code value }

EndingCode : Integer; { ending code value }

Slot : Word; { position that the next new code is to be added }

TopSlot : Word; { highest slot position for the current code size }

HighCode : Word; { highest code that does not require decoding }

NextByte : Integer; { the index to the next byte in the datablock array }

CurrByte : Byte; { the current byte }

DecodeStack : array[0..MAXCODES] of byte; { stack for the decoded codes }

Prefix : array[0..MAXCODES] of integer; { array for code prefixes }

Suffix : array[0..MAXCODES] of integer; { array for code suffixes }

LineBuffer : GraphicLine; { array for buffer line output }

CurrentX,

CurrentY : Integer; { current screen locations }

Status : Word;

InterlacePass : byte; { interlace pass number }

{Conversion Routine Vars}

BmHeader : TBitmapInfoHeader; {File Header for bitmap file}

ImageLines: TList; {Image data}

{Member Functions}

procedure ParseMem;

function NextCode: word; { returns the next available code }

procedure Error(ErrCode: integer);

procedure InitCompressionStream; { initializes info for decode }

procedure ReadSubBlock; { reads a data subblock from the stream }

procedure CreateLine;

procedure CreateBitHeader; {Takes the gif header information and converts it to BMP}

procedure Decode;

public

constructor Create;

destructor Destroy; override;

procedure LoadFromStream(Stream: TStream);

procedure SaveToStream(Stream: TStream);

end;

function Power(A, N: real): real; { returns A raised to the power of N }

begin

Power := exp(N * ln(A));

end;

{ TGifBitmap }

procedure TGifBitmap.LoadFromStream(Stream: TStream);

var

aBitmap : TBitmap;

aGif : TGif;

aStream : TMemoryStream;

begin

aGif := TGif.Create;

try

aGif.LoadFromStream(Stream);

aStream:=TMemoryStream.Create;

try

aGif.SaveToStream(aStream);

aBitmap:=TBitmap.Create;

aBitmap.LoadFromStream(aStream);

Assign(aBitmap);

finally

aStream.Free;

end;

finally

aGif.Free;

end;

{ TGif }

constructor TGif.Create;

begin

FStream := nil;

ImageLines := TList.Create;

end;

{------------------------------------------------------------------------------}

destructor TGif.Destroy;

begin

ImageLines.Free;

inherited Destroy;

end;

{------------------------------------------------------------------------------}

procedure TGif.LoadFromStream(Stream: TStream);

begin

FStream:=Stream;

{ Converts GIF file to bitstream }

ParseMem;

{ Create the bitmap header info }

CreateBitHeader;

{ Decode the GIF }

Decode;

(* WriteBitmapToStream; *)

end;

{------------------------------------------------------------------------------}

{Raise exception with a message}

procedure TGif.Error(ErrCode: integer);

begin

raise EGifException.Create(ErrName[ErrCode]);

end;

{------------------------------------------------------------------------------}

procedure TGif.ParseMem;

{Decodes the header and palette info}

begin

FStream.Read(Header, sizeof(Header)); { read the header }

{Stupid validation tricks}

if Header.Signature <> 'GIF' then Error(geNotGif); { is vaild signature }

{Decode the header information}

FStream.Read(LogicalScreen, sizeof(LogicalScreen));

if LogicalScreen.PackedFields and lsdGlobalColorTable = lsdGlobalColorTable then

begin

TableSize := Trunc(intPower(2,(LogicalScreen.PackedFields and lsdColorTableSize)+1));

FStream.Read(GlobalColorTable, TableSize*sizeof(TColorItem)); { read Global Color Table }

end else

Error(geNoGlobalColor);

{Done with Global Headers}

{Image specific headers}

FStream.Read(ImageDescriptor, sizeof(ImageDescriptor)); { read image descriptor }

{Decode image header info}

if ImageDescriptor.Separator <> ImageSeparator then { verify that it is the descriptor }

Error(geImagePreceded);

{Check for local color table}

if ImageDescriptor.PackedFields and idLocalColorTable = idLocalColorTable then

begin { if local color table }

TableSize := Trunc(intPower(2,(ImageDescriptor.PackedFields and idColorTableSize)+1));

FStream.Read(LocalColorTable, TableSize*sizeof(TColorItem)); { read Local Color Table }

UseLocalColors := True;

end else

UseLocalColors := False;

{Check for interlaced}

if ImageDescriptor.PackedFields and idInterlaced = idInterlaced then

begin

Interlaced := true;

InterlacePass := 0;

end;

{End of image header stuff}

{Reset then Expand capacity of the Image Lines list}

ImageLines.Clear;

ImageLines.Capacity := ImageDescriptor.ImageHeight;

if (FStream = nil) then { check for stream error }

Error(geNoFile);

end;

{------------------------------------------------------------------------------}

procedure TGif.InitCompressionStream;

begin

{InitGraphics;} { Initialize the graphics display }

FStream.Read(LZWCodeSize, sizeof(byte)); { get minimum code size }

if not (LZWCodeSize in [2..9]) then { valid code sizes 2-9 bits }

Error(geBadCodeSize);

CurrCodeSize := succ(LZWCodeSize); { set the initial code size }

ClearCode := 1 shl LZWCodeSize; { set the clear code }

EndingCode := succ(ClearCode); { set the ending code }

HighCode := pred(ClearCode); { set the highest code not needing decoding }

BytesLeft := 0; { clear other variables }

BitsLeft := 0;

CurrentX := 0;

CurrentY := 0;

end;

{------------------------------------------------------------------------------}

procedure TGif.ReadSubBlock;

begin

FStream.Read(ImageData.Size, sizeof(ImageData.Size)); { get the data block size }

if ImageData.Size = 0 then

Error(geEmptyBlock); { check for empty block }

FStream.Read(ImageData.Data, ImageData.Size); { read in the block }

NextByte := 1; { reset next byte }

BytesLeft := ImageData.Size; { reset bytes left }

end;

{------------------------------------------------------------------------------}

function TGif.NextCode: word; { returns a code of the proper bit size }

begin

if BitsLeft = 0 then { any bits left in byte ? }

begin { any bytes left }

if BytesLeft <= 0 then { if not get another block }

ReadSubBlock;

CurrByte := ImageData.Data[NextByte]; { get a byte }

Inc(NextByte); { set the next byte index }

BitsLeft := 8; { set bits left in the byte }

Dec(BytesLeft); { decrement the bytes left counter }

end;

Result := CurrByte shr (8 - BitsLeft); { shift off any previosly used bits}

while CurrCodeSize > BitsLeft do { need more bits ? }

begin

if BytesLeft <= 0 then { any bytes left in block ? }

ReadSubBlock; { if not read in another block }

CurrByte := ImageData.Data[NextByte]; { get another byte }

inc(NextByte); { increment NextByte counter }

Result := Result or (CurrByte shl BitsLeft); { add the remaining bits to the return value }

BitsLeft := BitsLeft + 8; { set bit counter }

Dec(BytesLeft); { decrement bytesleft counter }

end;

BitsLeft := BitsLeft - CurrCodeSize; { subtract the code size from bitsleft }

Result := Result and CodeMask[CurrCodeSize];{ mask off the right number of bits }

end;

{------------------------------------------------------------------------------}

procedure TGif.Decode; { this procedure actually decodes the GIF image }

var

SP: integer; { index to the decode stack }

{ local procedure that decodes a code and puts it on the decode stack }

procedure DecodeCode(var Code: word);

begin

while Code > HighCode do { rip thru the prefix list placing suffixes }

begin { onto the decode stack }

DecodeStack[SP] := Suffix[Code]; { put the suffix on the decode stack }

inc(SP); { increment decode stack index }

Code := Prefix[Code]; { get the new prefix }

end;

DecodeStack[SP] := Code; { put the last code onto the decode stack }

Inc(SP); { increment the decode stack index }

end;

var

TempOldCode, OldCode: word;

BufCnt: word; { line buffer counter }

Code, C: word;

CurrBuf: word; { line buffer index }

MaxVal: boolean;

begin

InitCompressionStream; { Initialize decoding paramaters }

OldCode := 0;

SP := 0;

BufCnt := ImageDescriptor.ImageWidth; { set the Image Width }

CurrBuf := 0;

MaxVal := False;

C := NextCode; { get the initial code - should be a clear code }

while C <> EndingCode do { main loop until ending code is found }

begin

if C = ClearCode then { code is a clear code - so clear }

begin

CurrCodeSize := LZWCodeSize + 1; { reset the code size }

Slot := EndingCode + 1; { set slot for next new code }

TopSlot := 1 shl CurrCodeSize; { set max slot number }

while C = ClearCode do

C := NextCode; { read until all clear codes gone - shouldn't happen }

if C = EndingCode then

Error(geBadCode); { ending code after a clear code }

if C >= Slot then { if the code is beyond preset codes then set to zero }

C := 0;

OldCode := C;

DecodeStack[sp] := C; { output code to decoded stack }

inc(SP); { increment decode stack index }

end else { the code is not a clear code or an ending code so it must }

begin { be a code code - so decode the code }

Code := C;

if Code < Slot then { is the code in the table? }

begin

DecodeCode(Code); { decode the code }

if Slot <= TopSlot then

begin { add the new code to the table }

Suffix[Slot] := Code; { make the suffix }

PreFix[slot] := OldCode; { the previous code - a link to the data }

inc(Slot); { increment slot number }

OldCode := C; { set oldcode }

end;

if Slot >= TopSlot then { have reached the top slot for bit size }

begin { increment code bit size }

if CurrCodeSize < 12 then { new bit size not too big? }

begin

TopSlot := TopSlot shl 1; { new top slot }

inc(CurrCodeSize) { new code size }

end else

MaxVal := True; { Must check next code is a start code }

end;

end else

begin { the code is not in the table }

if Code <> Slot then

Error(geBadCode); { so error out }

{ the code does not exist so make a new entry in the code table

and then translate the new code }

TempOldCode := OldCode; { make a copy of the old code }

while OldCode > HighCode do { translate the old code and place it }

begin { on the decode stack }

DecodeStack[SP] := Suffix[OldCode]; { do the suffix }

OldCode := Prefix[OldCode]; { get next prefix }

end;

DecodeStack[SP] := OldCode; { put the code onto the decode stack }

{ but DO NOT increment stack index }

{ the decode stack is not incremented because because we are only

translating the oldcode to get the first character }

if Slot <= TopSlot then

begin { make new code entry }

Suffix[Slot] := OldCode; { first char of old code }

Prefix[Slot] := TempOldCode; { link to the old code prefix }

inc(Slot); { increment slot }

end;

if Slot >= TopSlot then { slot is too big }

begin { increment code size }

if CurrCodeSize < 12 then

begin

TopSlot := TopSlot shl 1; { new top slot }

inc(CurrCodeSize); { new code size }

end else

MaxVal := True; { Must check next code is a start code }

end;

DecodeCode(Code); { now that the table entry exists decode it }

OldCode := C; { set the new old code }

end;

{ the decoded string is on the decode stack so pop it off and put it

into the line buffer }

while SP > 0 do

begin

dec(SP);

LineBuffer[CurrBuf] := DecodeStack[SP];

inc(CurrBuf);

dec(BufCnt);

if BufCnt = 0 then { is the line full ? }

begin

CreateLine;

CurrBuf := 0;

BufCnt := ImageDescriptor.ImageWidth;

end;

C := NextCode; { get the next code and go at is some more }

if (MaxVal = True) and (C <> ClearCode) then

Error(geBitSizeOverflow);

MaxVal := False;

end; { while }

end;

{------------------------------------------------------------------------------}

procedure TGif.CreateBitHeader;

{ This routine takes the values from the GIF image

descriptor and fills in the appropriate values in the

bit map header struct. }

begin

with BmHeader do

begin

biSize := Sizeof(TBitmapInfoHeader);

biWidth := ImageDescriptor.ImageWidth;

biHeight := ImageDescriptor.ImageHeight;

biPlanes := 1; {Arcane and rarely used}

biBitCount := 8; {Hmmm Should this be hardcoded ?}

biCompression := BI_RGB; {Sorry Did not implement compression in this version}

biSizeImage := 0; {Valid since we are not compressing the image}

biXPelsPerMeter :=143; {Rarely used very arcane field}

biYPelsPerMeter :=143; {Ditto}

biClrUsed := 0; {all colors are used}

biClrImportant := 0; {all colors are important}

end;

{------------------------------------------------------------------------------}

{fills in Line list with current line}

procedure TGif.CreateLine;

var

p: PBmLine;

begin

Application.ProcessMessages;

{Create a new bmp line}

New(p);

{Fill in the data}

p^.LineData := LineBuffer;

p^.LineNo := CurrentY;

{Add it to the list of lines}

ImageLines.Add(p);

{Prepare for the next line}

Inc(CurrentY);

if InterLaced then

{ Interlace support }

begin

case InterlacePass of

0: CurrentY := CurrentY + 7;

1: CurrentY := CurrentY + 7;

2: CurrentY := CurrentY + 3;

3: CurrentY := CurrentY + 1;

end;

if CurrentY >= ImageDescriptor.ImageHeight then

begin

Inc(InterLacePass);

case InterLacePass of

1: CurrentY := 4;

2: CurrentY := 2;

3: CurrentY := 1;

end;

{------------------------------------------------------------------------------}

procedure TGif.SaveToStream(Stream: TStream);

var

BitFile: TBitmapFileHeader;

i: integer;

Line: integer;

ch: char;

p: PBmLine;

x: integer;

begin

with BitFile do begin

bfSize := (3*255) + Sizeof(TBitmapFileHeader) + {Color map info}

Sizeof(TBitmapInfoHeader) +

(ImageDescriptor.ImageHeight*ImageDescriptor.ImageWidth);

bfReserved1 := 0; {not currently used}

bfReserved2 := 0; {not currently used}

bfOffBits := (4*256)+ Sizeof(TBitmapFileHeader)+

Sizeof(TBitmapInfoHeader);

end;

{Write the file header}

with Stream do begin

Position:=0;

ch:='B';

Write(ch,1);

ch:='M';

Write(ch,1);

Write(BitFile.bfSize,sizeof(BitFile.bfSize));

Write(BitFile.bfReserved1,sizeof(BitFile.bfReserved1));

Write(BitFile.bfReserved2,sizeof(BitFile.bfReserved2));

Write(BitFile.bfOffBits,sizeof(BitFile.bfOffBits));

{Write the bitmap image header info}

Write(BmHeader,sizeof(BmHeader));

{Write the BGR palete inforamtion to this file}

if UseLocalColors then {Use the local color table}

begin

for i:= 0 to 255 do

begin

Write(LocalColorTable[i].Blue,1);

Write(LocalColorTable[i].Green,1);

Write(LocalColorTable[i].Red,1);

Write(ch,1); {Bogus palete entry required by windows}

end;

end else {Use the global table}

begin

for i:= 0 to 255 do

begin

Write(GlobalColorTable[i].Blue,1);

Write(GlobalColorTable[i].Green,1);

Write(GlobalColorTable[i].Red,1);

Write(ch,1); {Bogus palete entry required by windows}

end;

{Init the Line Counter}

Line := ImageDescriptor.ImageHeight;

{Write out File lines in reverse order}

while Line >= 0 do

begin

{Go through the line list in reverse order looking for the

current Line. Use reverse order since non interlaced gifs are

stored top to bottom. Bmp file need to be written bottom to

top}

for i := (ImageLines.Count - 1) downto 0 do

begin

p := ImageLines.Items[i];

if p^.LineNo = Line then

begin

x := ImageDescriptor.ImageWidth;

Write(p^.LineData, x);

ch := chr(0);

while (x and 3) <> 0 do { Pad up to 4-byte boundary with zeroes }

begin

Inc(x);

Write(ch, 1);

end;

break;

end;

Dec(Line);

end;

Position:=0; { reset mewmory stream}

end;

{------------------------------------------------------------------------------}

initialization

{ register the TGifBitmap as a new graphic file format

now all the TPicture storage stuff can access our new

GIF graphic format !

}

TPicture.RegisterFileFormat('gif','GIF-Format', TGifBitmap);

end.

_____________________________

Delphi - .....................................

listview örneği

listview örneği

--------------------------------------------------------------------------------

Basit Listview örneği

unit Unit1;

interface

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

Dialogs, ImgList, ComCtrls, StdCtrls, ExtCtrls, Buttons, jpeg;

type

TForm1 = class(TForm)

ImageList1: TImageList;

Image1: TImage;

Label1: TLabel;

Label2: TLabel;

Label3: TLabel;

Label4: TLabel;

Label5: TLabel;

SpeedButton1: TSpeedButton;

SpeedButton2: TSpeedButton;

SpeedButton3: TSpeedButton;

SpeedButton4: TSpeedButton;

SpeedButton5: TSpeedButton;

ListView1: TListView;

Edit1: TEdit;

ComboBox1: TComboBox;

Edit2: TEdit;

Edit3: TEdit;

RadioButton1: TRadioButton;

RadioButton2: TRadioButton;

RadioButton3: TRadioButton;

RadioButton4: TRadioButton;

Timer1: TTimer;

Timer2: TTimer;

procedure FormCreate(Sender: TObject);

procedure RadioButton1Click(Sender: TObject);

procedure RadioButton2Click(Sender: TObject);

procedure RadioButton3Click(Sender: TObject);

procedure RadioButton4Click(Sender: TObject);

procedure Button1Click(Sender: TObject);

procedure Button2Click(Sender: TObject);

procedure Button3Click(Sender: TObject);

procedure Button4Click(Sender: TObject);

procedure Button5Click(Sender: TObject);

procedure SpeedButton1Click(Sender: TObject);

procedure SpeedButton2Click(Sender: TObject);

procedure SpeedButton3Click(Sender: TObject);

procedure SpeedButton4Click(Sender: TObject);

procedure SpeedButton5Click(Sender: TObject);

procedure Timer1Timer(Sender: TObject);

procedure Timer2Timer(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

end;

var

Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);

begin

animatewindow(handle,500,aw_ver_positive or aw_ver_negative or aw_center);

Height := ClientHeight;

combobox1.Items.Add('bilgisayar');

combobox1.Items.Add('yazıcı');

combobox1.Items.Add('tarayıcı');

combobox1.Items.Add('yanürünler');

combobox1.Items.Add('mouse');

combobox1.Items.Add('klavye');

listview1.HideSelection:=true;

end;

procedure TForm1.RadioButton1Click(Sender: TObject);

begin

listview1.ViewStyle:=vsicon;

end;

procedure TForm1.RadioButton2Click(Sender: TObject);

begin

listview1.ViewStyle:=vslist;

end;

procedure TForm1.RadioButton3Click(Sender: TObject);

begin

listview1.ViewStyle:=vsreport;

end;

procedure TForm1.RadioButton4Click(Sender: TObject);

begin

listview1.ViewStyle:=vssmallicon;

end;

procedure TForm1.Button1Click(Sender: TObject);

var index:integer;

begin

//kutularda yazılı olanı listenin sonuna ekle

listview1.Items.Add();

//son eklenen elemanın indexini bul

index:=listview1.Items.Count-1;

listview1.Items.Item[index].Caption:=edit1.Text;

listview1.Items.Item[index].ImageIndex:=combobox1.ItemIndex;

listview1.Items.Item[index].SubItems.Add(combobox1.Text);

listview1.Items.Item[index].SubItems.add(edit2.Text);

listview1.Items.Item[index].SubItems.add(edit3.Text);

end;

procedure TForm1.Button2Click(Sender: TObject);

begin

//seçili elemanı sil

if listview1.SelCount>0 then //seçili eleman varsa sil

listview1.Selected.Delete

else

showmessage('önce silinecek elemanı seçiniz')

end;

procedure TForm1.Button3Click(Sender: TObject);

begin

//seçili elemanı kutularda yazılı olanlarla değiştir.

if listview1.SelCount=0 then //seçili eleman yoksa

showmessage ('önce değiştirilecek elemanı seçiniz')

else

begin

listview1.selected.caption:=edit1.Text;

listview1.selected.ImageIndex:=combobox1.ItemIndex;

listview1.selected.subitems.add(combobox1.Text);

listview1.selected.subitems.add (edit2.Text);

end;

procedure TForm1.Button4Click(Sender: TObject);

begin

//Bul ve seç

listview1.Selected:=listview1.FindCaption(0,edit1.Text,true,true,true);

end;

procedure TForm1.Button5Click(Sender: TObject);

begin

close;

end;

procedure TForm1.SpeedButton1Click(Sender: TObject);

var index:integer;

begin

//kutulardan yazılı olanı listenin sonuna ekle

listview1.Items.Add();

//son eklenen elemanın indexini bul

index:=listview1.Items.Count-1;

listview1.Items.Item[index].Caption:=edit1.Text;

listview1.Items.Item[index].ImageIndex:=combobox1.ItemIndex;

listview1.Items.Item[index].SubItems.Add(combobox1.Text);

listview1.Items.Item[index].SubItems.add(edit2.Text);

listview1.Items.Item[index].SubItems.add(edit3.Text);

end;

procedure TForm1.SpeedButton2Click(Sender: TObject);

begin

//Bul ve seç

listview1.Selected:=listview1.FindCaption(0,edit1.Text,true,true,true);

end;

procedure TForm1.SpeedButton3Click(Sender: TObject);

begin

//seçili elemanı sil

if listview1.SelCount>0 then //seçili eleman varsa sil

listview1.Selected.Delete

else

showmessage('önce silinecek elemanı seçiniz')

end;

procedure TForm1.SpeedButton4Click(Sender: TObject);

begin

//seçili elemanı kutularda yazılı olanlarla değiştir.

if listview1.SelCount=0 then //seçili eleman yoksa

showmessage ('önce değiştirilecek elemanı seçiniz')

else

begin

listview1.selected.caption:=edit1.Text;

listview1.selected.ImageIndex:=combobox1.ItemIndex;

listview1.selected.subitems.add(combobox1.Text);

listview1.selected.subitems.add (edit2.Text);

end;

END;

procedure TForm1.SpeedButton5Click(Sender: TObject);

begin

close;

end;

procedure TForm1.Timer1Timer(Sender: TObject);

begin

label5.caption:='saat:' + Timetostr(time);

end;

var Flash : bool;

procedure TForm1.Timer2Timer(Sender: TObject);

begin

FlashWindow(Form1.Handle, Flash);

FlashWindow(Application.Handle, Flash); Flash := not Flash;

end;

end.

Delphi - .....................................