DBCrossView and interactive report

Comments

• gpi

  May 2011 edited 9:24AM

  Try to use:

  procedure Cross1OnPrintCell(Memo: TfrxMemoView; RowIndex, ColumnIndex, CellIndex: Integer; RowValues, ColumnValues, Value: Variant);
  begin
       Memo.TagStr := IntToStr(RowIndex) + '|' + IntToStr(ColumnIndex);                                                      
  end;
  
  procedure Cross1Cell0OnPreviewClick(Sender: TfrxView; Button: TMouseButton; Shift: Integer; var Modified: Boolean);
  begin
       ShowMessage(TfrxMemoView(Sender).TagStr);                              
  end;
  
• Adam Siwon

  May 2011 edited 9:24AM

  
  Yes it works, but I have another problem. Now I know what is number of the column or row of DBCrossView. How I can get field value from particular columns or rows? Is it a simple way or I should to store these values in the OnPrintColumnHeader event?
  
  --
  best regards
  Adam Siwoń
  
• Mick.pl

  May 2011 edited 9:24AM

  Try to put this vaule in a TagStr of each cell as Gpi showed by building a bit more complicated string concatenations.
  
  Mick
  
• Adam Siwon

  May 2011 edited May 2011

  Mick.pl wrote: »

  Try to put this vaule in a TagStr of each cell as Gpi showed by building a bit more complicated string concatenations.

  
  I have tried to set TagStr using DataSet.FieldByName('column_id').AsString in OnPrintCell event, but for every cell I have the same value of the field. I think the only way is save to string lists the values of columns and rows in OnPrintColumnHeader event and OnPrintRowHeader event and then prepare Memo.TagStr for every cell. I will try to do this tomorrow. Thank you for your help.
  
  --
  best regards
  Adam Siwon
• Mick.pl

  May 2011 edited 9:24AM

  Noone knows well how DBCross manipulate its data & cells (if you don't search through FR source code).
  But you can use offical methods to work with data that DBCross passes to each cell in OnPrintCell event.
  Pay attention how to get data value passed to this event - I mean Value parameter.
  

  procedure Cross1OnPrintCell(Memo: TfrxMemoView; RowIndex, ColumnIndex, CellIndex: Integer; 
                              RowValues, ColumnValues, Value: Variant);
  begin
    Memo.TagStr := IntToStr(RowIndex) + '|' + IntToStr(ColumnIndex) + '|' + VarToStr(Value);;  
  end;
  

  
  OnPrintColumnHeader is not fired for each cell, so you won't be able to use it for gathering data you need.
  
  Mick
  
• Adam Siwon

  May 2011 edited May 2011

  Mick.pl wrote: »

  Noone knows well how DBCross manipulate its data & cells (if you don't search through FR source code).
  But you can use offical methods to work with data that DBCross passes to each cell in OnPrintCell event.
  Pay attention how to get data value passed to this event - I mean Value parameter.

  
  Yes I saw this when I made test. I can't get values from the dataset also in the OnPrintColumnHeader event.
  

  Mick.pl wrote: »

  OnPrintColumnHeader is not fired for each cell, so you won't be able to use it for gathering data you need.

  
  The main problem is, that I don't need to have value from the cell which was clicked. The most valuable information is database identities of row and column for clicked cell.
  
  Today I solved this problem. In the OnPrintCell event I'm reading column and row header values in the following way:
  

    Memo.TagStr := VarToStr(RowValues[0]) + ';' + VarToStr(ColumnValues[0]);
  

  
  And then in the DBCross1Cell0OnPreviewDblClick I can read from these values from TagStr property and find appropriate identity value for row and column in the source DataSet.
  
  Thank you very much for help.
  
  --
  best regards
  Adam
• Mick.pl

  May 2011 edited 9:24AM

  I still wonder how to force "codebox" & "/codebox" to show only lines that are needed instead of adding many empty lines like below:
  

  Memo.TagStr := VarToStr(RowValues[0]) + ';' + VarToStr(ColumnValues[0]);
  

  
  Can you give me any suggestion on that?
  
  Mick