Calc TfrxMemoView Width

Comments

• AlexTZ

  October 2004 edited 12:13PM

  To calc the width and height of the memo, use TfrxMemoView.CalcWidth and CalcHeight methods.
• CesarRomero

  October 2004 edited 12:13PM

  CalcWidth will give the width of the content?
  
  I need to fix this with base in TField.DisplayWidth not the content, so the content can be truncated if is larger than Memo.Width, and I use this to calc the left of the next memo.
  
  []s
  
• CesarRomero

  October 2004 edited 12:13PM

  I create 3 bands in design, and then I pass the Field to create the 3 Memo, 1 to header, 2 Data and 3 footer, I pass the band to function:
  

  procedure TReportDataItem.CreateViews(HeaderBand, DataBand,
    FooterBand: TfrxBand);
  var
    lTempView: TfrxMemoView;
  begin
    if DataBand = nil then
    begin
      raise Exception.Create('Informe a DataBand (TfrxMasterData)');
      Exit;
    end;
  
    FDataView:= TfrxMemoView.Create(DataBand);
    lTempView:= TfrxMemoView.Create(DataBand);
  
    lTempView.Visible:= False;
    lTempView.Memo.Text:= DupeString('O', Field.DisplayWidth);
    lTempView.CalcHeight;
    lTempView.CalcWidth;
  
    with FDataView do
    begin
      CreateUniqueName;
      WordWrap:= False;
      Parent:= DataBand;
      DataSet:= TfrxMasterData(DataBand).DataSet;
  
      DataField:= Field.FieldName;
      Top:= 0;
      Height:= lTempView.Height;
      Width := lTempView.Width;
    end;
  
    if HeaderBand <> nil then
    begin
      FCaptionView:= TfrxMemoView.Create(HeaderBand);
      with FCaptionView do
      begin
        CreateUniqueName;
        Parent:= HeaderBand;
        Memo.Text:= Field.DisplayLabel;
        Top:= FDataView.Top;
        Height:= lTempView.Height;
        Width := lTempView.Width;
        WordWrap:= False;
        Font.Style:= [fsBold];
      end;
    end;
  
    if FooterBand <> nil then
    begin
      FFooterView:= TfrxMemoView.Create(FooterBand);
      with FFooterView do
      begin
        CreateUniqueName;
        Visible:= False;
        Parent:= FooterBand;
        Top:= FDataView.Top;
        Height:= FDataView.Height;
        WordWrap:= False;
        Width:= FDataView.Width;
        Font.Style:= [fsBold];
      end;
    end;
  
    if lTempView <> nil then
    begin
      lTempView.Free;
    end;
  end;
  

  
  but
  lTempView.CalcHeight;
  lTempView.CalcWidth;
  
  always returns 0 (Zero)
  
  what can be wrong?
  
  
  
  []s
  
• AlexTZ

  October 2004 edited 12:13PM

  var
  lTempView: TfrxMemoView;
  begin
  lTempView := TfrxMemoView.Create(nil);
  lTempView.Memo.Text:= 'OOOOOOOOOOOOO';
  Caption := FloatToStr(lTempView.CalcHeight) + ' ' + FloatToStr(lTempView.CalcWidth);
  end
  
  works well.
  One note: to calculate height, you should set large Width value to be sure that text lines will not wrap. I.e.
  
  lTempView := TfrxMemoView.Create(nil);
  lTempView.Memo.Text:= 'OOOOOOOOOOOOO';
  lTempView.Width := 1000;
  Caption := FloatToStr(lTempView.CalcHeight) + ' ' + FloatToStr(lTempView.CalcWidth);
  
• CesarRomero

  October 2004 edited 12:13PM

  Really works, thanx
  
  []s