Solved

I don't get the Qreport OnNeedData...

Posted on 2000-02-19
9
551 Views
Last Modified: 2012-05-04
Hi, I have a TStringList which I want to print in a report. One subdetailline per String in the List.
So, I figured I have to use the OnNeedData event of the subdetail to print each rule.
No I have the following code:

procedure TLCRepForm.HygOpdtNeedData(Sender: TObject;
  var MoreData: Boolean);
begin
  if HygList.Count > ListCount then
begin
  HygOp.Caption := GebouwList.Strings[ListCount];
  Inc(ListCount);
  MoreData := GebouwList.Count > ListCount ;
end;
end;

where the HygOp is a label on my subdetailrecord. I have the dataset of the subdetail empty..
I can't figure out what I'm doing wrong.. It just print nothing...

Thanks,

Lizzzard
0
Comment
Question by:lizzzard
  • 5
  • 4
9 Comments
 
LVL 8

Expert Comment

by:ZifNab
ID: 2538139
lizzard,

have you set the ListCount to zero?
Why do you use a subdetail and not a detail? If you use a subdetail, then how is it related to the detail?

here is code that works (with ListView and Detailband):

unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ExtCtrls, QuickRpt, Qrctrls;

  type
   TfrmNeedData = class(TForm)
     QuickRep1: TQuickRep;
     QRLabel1: TQRLabel;
     TitleBand1: TQRBand;
     DetailBand1: TQRBand;
     procedure FormCreate(Sender: TObject);
     procedure QuickRep1BeforePrint(Sender: TCustomQuickRep;
        var PrintReport: Boolean);
     procedure QuickRep1NeedData(Sender: TObject; var MoreData: Boolean);
     private
      { Private declarations }
      SomeList: TStringlist;
      CurrentIndex: integer;
     public
      { Public declarations }
     end;

   var
    frmNeedData: TfrmNeedData;

   implementation

uses Unit1;

                      {$R *.DFM}

 procedure TfrmNeedData.FormCreate(Sender: TObject);
   var
    i: integer;
 begin
 end;

 procedure TfrmNeedData.QuickRep1BeforePrint(Sender: TCustomQuickRep;
   var PrintReport: Boolean);
 begin
   // You must reset your data in the BeforePrint event
   // or when you print from the preview, the report will
   // start with the last value(s)
   CurrentIndex := 0;
 end;

 procedure TfrmNeedData.QuickRep1NeedData(Sender: TObject;
   var MoreData: Boolean);
 begin
   // If MoreData is true, then QuickReport will print
   // another detail band.  When you set it to false,
   // the report is done.

   MoreData := (CurrentIndex <    form1.ListView1.Items.Count);

   if MoreData then
   begin
    QRLabel1.Caption := form1.ListView1.Items[CurrentIndex].caption;
    // Here's how to set the progress bar
    QuickRep1.QRPrinter.Progress := (Longint(CurrentIndex) * 100) div form1.ListView1.ITems.Count;
   end
   else
    QuickRep1.QRPrinter.Progress := 100;
   Inc(CurrentIndex);
  end;

end.

Zif.

0
 
LVL 8

Expert Comment

by:ZifNab
ID: 2538153
just replace the listview with your stringlist and it should work fine.

Zif.
0
 

Author Comment

by:lizzzard
ID: 2538164
Hi, ZiF!!!!

Long time no see! How's it hanging?

Thanks for you comment..
I use a subdetail because it is a subdetail...
I want to report from a master/detail recorset, in which one of the  fields of the detail is a DBMemo.
I want to add some comment text to each line of the memo (which I have assigned to a TStringList for my convience)...
And yes.. I have set ListCount to 0... Nice try though..

I will try your code in my report.

Regards and all the best from Holland,

Lizzzard
0
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

 
LVL 8

Expert Comment

by:ZifNab
ID: 2538388
Hi lizzzard,

all things fine here (and in Belgium too :-) ).Mmmm, can you test somehow if the subdetail band is used during report time?

Zif.
0
 

Author Comment

by:lizzzard
ID: 2538568
Zif,

I tried your solution, and it worked But I don't get what I'm doing wrong in my code..
Now I have another problem.. See my new question.. hehehe

Regards,

Lizzard...
0
 

Author Comment

by:lizzzard
ID: 2538569
PS

do you want the points for your comment???
0
 
LVL 8

Accepted Solution

by:
ZifNab earned 50 total points
ID: 2538642
great that it works. :-)

I don't get notifications when comments are given :-( that's why I'm so slow in reaction to your messages. Sorry !

you can publish your code and maybe I can find the problem which you're overlooking?

Zif.
0
 

Author Comment

by:lizzzard
ID: 2538727
It's OK with your code, Zif..  I have to finish this project soon,  So if it works, it works. I'm not normally like that.. Right now I have hellhounds on my trail..

Thanks anyway.
0
 

Author Comment

by:lizzzard
ID: 2545232
Sorry Zif...

I saw I forgot to grade you...
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering 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

Suggested Solutions

Title # Comments Views Activity
code issue 8 153
Delphi Mdi application Child forms get behind control 7 270
Working with hours 3 65
Why can't I create any project with my delphi EXE file? 6 39
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…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

839 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