Re: Printing with ReportBuider

Author

Message

Sergey Tkachenko

Posted: 04/05/2002 20:52:14

But who creates this canvas?

I thought that ReportBuilder passed that canvas to its objects.

As for RichView, it has function (in Ptblrv.pas) returning HDC compatible

with current printer settings of application:

function RV_GetPrinterDC: HDC;

RichView assigns it to Canvas.Handle

When all is done, this DC is deleted (DeleteDC)

I am not sure if ReportBuilder uses printer settings of applications or it

has its own settings.

> Yes, prnsad.ppiyDevice = 96 aswell, so it seems to be what the state of

the

> canvas passed to RVReportHelper.Init.

> I noticed that prnsad.ppiyDevice = 600 in your native printer.

> One problem is that if previewing, the printer canvas has not yet been

> initialized becaused the printer has not yet been selected, which is

awkward

> with TRVReportHelp.Init as it has to be called before previewing.

> Even after forcing the canvas font to 600ppi and verifying that that is

what

> it is when the RVStyle is doing its TextOut, it still prints out with huge

> fonts.

> "Sergey Tkachenko" <svt@trichview.com> wrote in message

> news:3cadbd24$1@support.torry.net...

> > 96 is a pixels-per-inch value of screen.

> > But for RichView printing, it should be equal to ppi of printer

> > (prnsad.ppiyDevice). For example, for my HP LJ 1100 ppi=600 (600 dots

per

> > inch)

> >

> > Is value of prnsad.ppiyDevice = 96 too?

> >

> > >

> > > if

> > >

> >

TCustomMainPtblRVData(FHelper.RichView.RVData).PrnSaD.ppixDevice>TCustomMain

> > > PtblRVData(FHelper.RichView.RVData).PrnSaD.ppiyDevice then

> > > lPrinter.Canvas.Font.PixelsPerInch :=

> > > TCustomMainPtblRVData(FHelper.RichView.RVData).PrnSaD.ppiyDevice

> > > else

> > > lPrinter.Canvas.Font.PixelsPerInch :=

> > > TCustomMainPtblRVData(FHelper.RichView.RVData).PrnSaD.ppixDevice;

> > >

> > > The ppi always seems to be 96 and aribitrarily changing it (*20, /2,

> etc)

> > > does'nt make any difference, which is is indicative of the problem, I

> > > suppose.

> > >

> > > I did a similar posting to ReportBuilder support and they've requested

> my

> > > wrapper to check out.

> > >

> > > It will be in all our interests to get this working.

> > >

> > > "Sergey Tkachenko" <svt@trichview.com> wrote in message

> > > news:3cac96ee@support.torry.net...

> > > > Is Canvas.Font.PixelsPerInch set to the printer resolution?

> > > >

> > > > > We have made a RichView support component for use in ReportBuilder

> > > > > (Piparti). The preview is now working reasonably well, but with

the

> > > > > printing, while the page starts in the correct position after the

> > report

> > > > > header and ends without writing over the report footer, the font

> > way

> > > > > larger than it should be. Embedded pictures are drawn at the

correct

> > > > > position and size and a table's frame is also correct in position

> and

> > > > size,

> > > > > so we seem to have the scaling correct - it's just the @#$ font!

The

> > > page

> > > > is

> > > > > being drawn to ReportBuilder's printer canvas and not directly to

> the

> > > > actual

> > > > > printer canvas, but it's canvas is being set to the correct font

> style

> > > on

> > > > > TextOutA in TFontInfo.Draw, so it seems to be some sort of canvas

> > > setting,

> > > > > or probably more likely, ReportBuilder is doing some sort of

stretch

> > > copy

> > > > to

> > > > > the actual printer canvas that is scaling the graphics, but not

the

> > > > fonts -

> > > > > but the problem does not exist with other ReportBuilder

components.

> > > > >

> > > > > Any suggestions?

> > > > >

> > > >

> > >

> >