Solved

TDrawGrid..can it do this????????????????

Posted on 2002-04-12
7
236 Views
Last Modified: 2010-04-04
hihi..
  I want to use TDrawGrid to finish the following function,can it do this??????????
Wanted Function:
  When I click on a grid the color of the current grid can change. or just like :
   DrawGrid1.Rect(1,2).Color:=clBlue;
can I?????????????????????????????????????
                               wind
0
Comment
Question by:windyui
[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
  • 3
  • 2
  • 2
7 Comments
 
LVL 27

Expert Comment

by:kretzschmar
ID: 6936251
yes, could be done,
but not in this way

DrawGrid1.Rect(1,2).Color:=clBlue;

look at the ownerdraw-features

more points, more advice

meikl ;-)
0
 
LVL 9

Accepted Solution

by:
ITugay earned 39 total points
ID: 6936404
Hi windyui,

it looks like all of yours available points :-)

meikl :-)

may be something like this?

procedure TForm1.DrawGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
begin
  with DrawGrid1 do
  begin
    if gdSelected in State then
      Canvas.Brush.Color := clLime;
    Canvas.FillRect(CellRect(ACol, ARow));
  end;
end;

----
Igor.


0
 
LVL 27

Expert Comment

by:kretzschmar
ID: 6936414
>it looks like all of yours available points :-)

guessing no,
member since 1999, question asked 10
must have thousends of points

for q lower 50 pts i gave only hints

hi igor ;-)
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 9

Expert Comment

by:ITugay
ID: 6936425
oh nooooooooo, it was a trick! :-)
0
 

Author Comment

by:windyui
ID: 6936769
Hi, Igor
   Yor are almost Right. the Currect answer is
on the ONMOUSEDOWN Event:
begin
 MouseToCell(X,Y,Col,Row);
 with DrawGrid1 do
 begin
   Canvas.Brush.Color := clLime;
   Canvas.FillRect(CellRect(ACol, ARow));
 end;
end;

0
 
LVL 9

Expert Comment

by:ITugay
ID: 6938520
hi windyui,

not very sure about your solution. Let suppose you need to show any text or graphic in cell. Then you have to write OnDrawCell implementation and the same code for OnMouseDown event. So, OnMouseDown is only partial solution, however OnDrawCell is more logical and universal one.

and I think that you code wouldn't work even if you specify DefaultDrawing = False:

1. MouseToCell(X,Y,Col,Row); should be bellow "with DrawGrid1 do"
2. you can't pass Col and Row as parameters to MouseToCell
3. after Grid will be repainted, all cell's will be white again.

to solve this problem you have to store cell's colors somewhere, let say in matrix.

------
Igor

0
 

Author Comment

by:windyui
ID: 6940124
HI,Igor
   Yes you r right.WHen other windows upon (e.g. The Message window) the Cells ,the color LOST and become white again.
   I will try to store the color in a Matrix.Thx...


                                           windyui
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…
Suggested Courses
Course of the Month7 days, 23 hours left to enroll

617 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