Re: Printing/Preview question

Author

Message

William Whitaker

Posted: 01/08/2003 5:03:19

The records do exist in the table. I can view them just fine in a dbrichview

field. However, I am not able to print/preview. Here's the code that I use

to preview/print:

procedure TfmRepCrit.UpdatePreview;

procedure SearchAndInsertIcon(const Code: String; ImageIndex: Integer);

begin

rve1.SetSelectionBounds(0, rve1.GetOffsBeforeItem(0), 0, rve1.GetOffsBeforeItem(0));

while rve1.SearchText(Code, [rvseoDown]) do

case ImageIndex of

0: case pID of

0: rve1.InsertText((fmMain.ActiveMDIChild as TfmAD).qryAD.fieldbyname('AD').asstring);

1: rve1.InsertText((fmMain.ActiveMDIChild as TfmTextSearch).RTFMatchTable.FieldByName('AD').asstring);

2: rve1.InsertText(fmRepCrit2A.qryAD.FieldByName('AD').asstring);

end;

1: case pID of

0: rve1.InsertText((fmMain.ActiveMDIChild as TfmAD).qryAD.fieldbyname('Rev').asstring);

1: rve1.InsertText((fmMain.ActiveMDIChild as TfmTextSearch).RTFMatchTable.FieldByName('Rev').asstring);

2: rve1.InsertText(fmRepCrit2A.qryAD.FieldByName('Rev').asstring);

end; // 0: rve1.InsertText(src.fieldbyname('Rev').asstring);

2: case pID of

0: rve1.InsertText((fmMain.ActiveMDIChild as TfmAD).qryAD.fieldbyname('Description').asstring);

1: rve1.InsertText((fmMain.ActiveMDIChild as TfmTextSearch).RTFMatchTable.FieldByName('Description').asstring);

2: rve1.InsertText(fmRepCrit2A.qryAD.FieldByName('Description').asstring);

end; // 0: rve1.InsertText(src.fieldbyname('Description').asstring);

3: case pID of

0: rve1.InsertText(FormatDateTime('dd MMM yyyy',(fmMain.ActiveMDIChild

as TfmAD).qryAD.fieldbyname('EffDate').asdatetime));

1: rve1.InsertText(FormatDateTime('dd MMM yyyy',(fmMain.ActiveMDIChild

as TfmTextSearch).RTFMatchTable.FieldByName('EffDate').asdatetime));

2: rve1.InsertText(FormatDateTime('dd MMM yyyy',fmRepCrit2A.qryAD.FieldByName('EffDate').asdatetime));

end; // 3: rve1.InsertText(FormatDateTime('dd MMM yyyy',src.fieldbyname('EffDate').asdatetime));

4: case pID of

0: rve1.InsertText((fmMain.ActiveMDIChild as TfmAD).qryAD.fieldbyname('Supercedes').asstring);

1: rve1.InsertText((fmMain.ActiveMDIChild as TfmTextSearch).RTFMatchTable.FieldByName('Supercedes').asstring);

2: rve1.InsertText(fmRepCrit2A.qryAD.FieldByName('Supercedes').asstring);

end; // 4: rve1.InsertText(src.fieldbyname('Supercedes').asstring);

5: If pAE = 'X' then

case pID of

0: rve1.InsertText((fmMain.ActiveMDIChild as TfmAD).qryAD.fieldbyname('SeriesDesc').asstring);

1: rve1.InsertText((fmMain.ActiveMDIChild as TfmTextSearch).RTFMatchTable.FieldByName('SeriesDesc').asstring);

2: rve1.InsertText(fmRepCrit2A.qryAD.FieldByName('SeriesDesc').asstring);

end // rve1.InsertText(src.fieldbyname('SeriesDesc').asstring)

else

rve1.InsertText('');

6: if cbIncludeNotes.checked then

case pID of

0: rve1.InsertText((fmMain.ActiveMDIChild as TfmAD).dbNotes.fieldbyname('Notes').asstring);

1: rve1.InsertText('');

2: rve1.InsertText(fmRepCrit2A.dbNotes.FieldByName('Notes').asstring);

end // rve1.InsertText(src.fieldbyname('Notes').asstring)

else

rve1.InsertText('');

7: if pID <> 1 then

case pAE[1] of // series caption

'A','R' : rve1.InsertText('');

'P','E' : rve1.InsertText('');

'X' : rve1.InsertText('Manufacturer:');

end

else

rve1.InsertText('');

9: if pGrp <> 1 then

rve1.InsertText('');

10: case pAE[1] of

'A','R' : rve1.InsertText(pMfgName);

'P','E' : rve1.InsertText(pMfgName);

'X' : rve1.InsertText(pMfgName);

end;

begin

rve1.LoadRVF(g_dataQADdir+'ADTemplate.rvf');

rve1.RVFParaStylesReadMode := rvf_sIgnore;

rve1.RVFTextStylesReadMode := rvf_sIgnore;

ReplaceFields(rve1.RVData);

rve1.Format;

LockWindowUpdate(rve1.Handle);

try

SearchAndInsertIcon('#AD#', 0);

SearchAndInsertIcon('#ACTYPE#', 10);

SearchAndInsertIcon('#REV#', 1);

SearchAndInsertIcon('#DESCRIPTION#', 2);

SearchAndInsertIcon('#EFFDATE#', 3);

SearchAndInsertIcon('#SUPERCEDES#', 4);

SearchAndInsertIcon('#SERIES#', 5);

SearchAndInsertIcon('#LBLSERIES#', 7);

SearchAndInsertIcon('#NOTES#', 6);

finally

LockWindowUpdate(0);

end;

procedure TfmRepCrit.FormCreate(Sender: TObject);

begin

InUse := False;

end;

procedure TfmRepCrit.ReplaceFields(RVData: TCustomRVFormattedData);

var i,j: Integer;

Stream: TMemoryStream;

Dummy1: TColor;

Dummy2, Dummy3: Pointer;

ParaNo: Integer;

BR, ContinuePara: Boolean;

table: TRVTableItemInfo;

r,c: Integer;

begin

Dummy1 := clNone;

Dummy2 := nil;

Dummy3 := nil;

for i := RVData.Items.Count-1 downto 0 do

case RVData.GetItemStyle(i) of

1: // the first text style is used for fields

begin

// storing parameters of deleted items

ParaNo := RVData.GetItemPara(i);

BR := RVData.GetItem(i).BR;

ContinuePara := RVData.GetItem(i).SameAsPrev;

// loading field value in the stream

Stream := LoadData(RVData.Items[i]);

if Stream<>nil then begin

// deleting the field code

RVData.DeleteItems(i,1); // in older versions, it was called

DeleteLines

// inserting the field value

RVData.InsertRVFFromStream(Stream, i, Dummy1, Dummy2, Dummy3,

False);

// applying stored parameters to the inserted items

for j := i to RVData.Items.Count-1 do begin

if (i=j) then begin

RVData.GetItem(j).SameAsPrev := ContinuePara;

if BR then

RVData.GetItem(j).BR := True;

end;

if (j>i) and RVData.IsParaStart(j) then

break;

RVData.GetItem(j).ParaNo := ParaNo;

end;

Stream.Free;

end;

rvsTable:

begin

// recursive call for table cells

table := TRVTableItemInfo(RVData.GetItem(i));

for r := 0 to table.Rows.Count-1 do

for c := 0 to table.Rows[r].Count-1 do

if table.Cells[r,c]<>nil then

ReplaceFields(table.Cells[r,c]);

end;

RVData.Normalize;

end;

// Loading field code

function TfmRepCrit.LoadData(const Code: String): TMemoryStream;

begin

Result := nil;

// if not fmAD.qryAD.Locate('AD', Code, []) then

// exit;

Result := TMemoryStream.Create;

case pID of

0: TBlobField((fmMain.ActiveMDIChild as TfmAD).dbAD.FieldByName('ADPicture')).SaveToStream(Result);

//fmAD.dbAD.FieldByName('ADPicture')).SaveToStream(Result);

1: TBlobField((fmMain.ActiveMDIChild as TfmTextSearch).RTFMatchTable.FieldByName('ADPicture')).SaveToStream(Result);

//fmTextSearch.RTFMatchTable.FieldByName('ADPicture')).SaveToStream(Result);

2: TBlobField(fmRepCrit2A.qryAD.FieldByName('ADPicture')).SaveToStream(Result);

end;

Result.Position := 0;

RichView2.Clear;

RichView2.InsertRVFFromStream(Result, 0); // inserting will merge styles;

// RichView1 and RichView2 have the same collections of styles

Result.Clear;

RichView2.SaveRVFToStream(Result, False);

Result.Position := 0;

end;

procedure TfmRepCrit.Button2Click(Sender: TObject);

begin

if not PreviewCreated then begin

PreviewCreated := True;

RVPrint1.AssignSource(rve1);

RVPrint1.FormatPages(rvdoAll);

end;

// do not print empty document!

if rve1.ItemCount=0 then

exit;

PrintDialog1.MinPage := 1;

PrintDialog1.MaxPage := RVPrint1.PagesCount;

PrintDialog1.FromPage := 1;

PrintDialog1.ToPage := RVPrint1.PagesCount;

// we can pring whole document or specified pages:

if PrintDialog1.Execute then begin

// it's possible that current printer was changed.

// so we need to reformat document and update preview:

RVPrint1.AssignSource(rve1);

RVPrint1.FormatPages(rvdoAll);

case PrintDialog1.PrintRange of

prAllPages:

RVPrint1.Print( 'Test', PrintDialog1.Copies, PrintDialog1.Collate);

prPageNums:

RVPrint1.PrintPages(PrintDialog1.FromPage, PrintDialog1.ToPage,

'Test', PrintDialog1.Copies, PrintDialog1.Collate);

end;

"Sergey Tkachenko" <svt@trichview.com> wrote:

>Probably, these records were not written in the database.

>How do you write them?

>Please looks at the Example 1 in the help topic about TDBRichViewEdit

>> I am unable to preview/print specifc records in my database table. Viewing

>> the information is no problem. However, the records that don't show in

the

>> preview/printout are ones which I transferred

>> from a memo field to the blob field which was added to the table to handle

>> the RVF format. Other records which were later added are OK - these

>records

>> were imported using RVFImporter or simply copied and pasted into a

>> DBRichEdit field. So the problem is those records which were simply

>> transferred from memo to blob. I tested one of those records by cutting

>and

>> then repasting back into the record via DBRichEdit and it then shows up

>> the preview/printout after that. Is there an easy way to determine whether

>> record contains a "problematic" blob field, one that won't be printing

>> properly, and to convert it to RVF format so it will show up in the

>> printouts.

>> William Whitaker