[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

Showing and selecting images in a TDrawGrid

Posted on 2004-05-02
4
Medium Priority
?
1,513 Views
Last Modified: 2012-08-14
1. I would like to show a list of images in a drawgrid
2. I want to be able to select an image from the grid
3. I would also like to be able to select 2 images from the grid

I am starting with a list of filenames held in s string list, all the files are small JPEG files. Could someone please give me some standard code to show these images in a DrawGrid as there seems to be no useful doumentation. After I have the images showing I would like to be able to click on a cell in the drawgrid and show the picture in a TImage component or click on two cells and show the images in two TImage components.

Thanks in advance - Dan
0
Comment
Question by:seabear
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 6

Expert Comment

by:Amir Azhdari
ID: 10975022
0
 
LVL 12

Accepted Solution

by:
Ivanov_G earned 1000 total points
ID: 10976208
unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, jpeg,
  StdCtrls, ExtCtrls, Grids;

type
  TForm1 = class(TForm)
    DrawGrid1: TDrawGrid;
    Image1: TImage;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure DrawGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
      Rect: TRect; State: TGridDrawState);
    procedure DrawGrid1SelectCell(Sender: TObject; ACol, ARow: Integer;
      var CanSelect: Boolean);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var jpg : TJPEGImage;
    bmp : TBitmap;
    rect : TRect;
begin
  // load the JPG
  jpg := TJPEGImage.Create;
  jpg.LoadFromFile('D:\Work\grepsearch.JPG');
  // assign in Bitmap
  bmp := TBItmap.Create;
  bmp.Assign(jpg);
  // draw in the DrawGrid;
  rect := DrawGrid1.CellRect(0, 0);
  DrawGrid1.Canvas.StretchDraw(rect, bmp);
end;

procedure TForm1.DrawGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
var jpg : TJPEGImage;
    bmp : TBitmap;
    rectt : TRect;
begin
  // load the JPG
  jpg := TJPEGImage.Create;
  jpg.LoadFromFile('D:\Work\grepsearch.JPG');
  // assign in Bitmap
  bmp := TBItmap.Create;
  bmp.Assign(jpg);
  // draw in the DrawGrid;
  rectt := DrawGrid1.CellRect(0, 0);
  DrawGrid1.Canvas.StretchDraw(rectt, bmp);
end;

procedure TForm1.DrawGrid1SelectCell(Sender: TObject; ACol, ARow: Integer;
  var CanSelect: Boolean);
var
  rect : TRect;
begin
  rect := DrawGrid1.CellRect(ACol, ARow);
  Image1.Canvas.CopyRect(rect, DrawGrid1.Canvas, rect);
end;

end.
0
 

Author Comment

by:seabear
ID: 10999922
Thank you Azhdari and Victor,
       The code that best fits what I want is Victor's so I have accepted his answer. Thank you both for your time - Dan
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
Suggested Courses

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question