Re: Fit meatfile to page (reposted with subject line)

Return to index

Author

Message

horse

Posted: 07/10/2002 13:16:20

GetScreenPageSize

get the page size of print .

now i have a position on richView canvas

for example x:= 100; y := 300;

then i want to change the coordinate of the point on richView

to the coordinate of canvas in OnPagePrepaint.

thanks

"Sergey Tkachenko" <svt@trichview.com> 写入消息新闻

:3cfcb588$1@support.torry.net...

> The procedure below returns a size of picture (in screen resolution) that

> will fill a whole page.

>

>

> procedure GetScreenPageSize(RVPrint: TRVPrint;

>                             var Width, Height: Integer);

> var DC: HDC;

>     phoX, phoY, phW, phH, lpy, lpx, LM, TM, RM, BM: Integer;

> begin

>   DC := RV_GetPrinterDC; // from PtblRV unit

>

>   Width  := GetDeviceCaps(DC, HORZRES);

>   Height := GetDeviceCaps(DC, VERTRES);

>

>   lpy := GetDeviceCaps(DC, LOGPIXELSY);

>   lpx := GetDeviceCaps(DC, LOGPIXELSX);

>

>   phoX := GetDeviceCaps(DC, PHYSICALOFFSETX);

>   phoY := GetDeviceCaps(DC, PHYSICALOFFSETY);

>   phW  := GetDeviceCaps(DC, PHYSICALWIDTH);

>   phH  := GetDeviceCaps(DC, PHYSICALHEIGHT);

>

>   LM := MulDiv(RVPrint.LeftMarginMM,   5*lpx, 127)- phoX;

>   TM := MulDiv(RVPrint.TopMarginMM,    5*lpy, 127)- phoY;

>   RM := MulDiv(RVPrint.RightMarginMM,  5*lpx, 127)- (phW-(phoX+Width));

>   BM := MulDiv(RVPrint.BottomMarginMM, 5*lpy, 127)- (phH-(phoY+Height));

>

>   if LM<0 then LM := 0;

>   if TM<0 then TM := 0;

>   if RM<0 then RM := 0;

>   if BM<0 then BM := 0;

>

>   dec(Width, LM+RM);

>   dec(Height, TM+BM);

>

>   DeleteDC(DC);

>

>   DC := GetDC(0);

>

>   Width  := MulDiv(Width,  GetDeviceCaps(DC, LOGPIXELSX), lpx);

>   Height := MulDiv(Height, GetDeviceCaps(DC, LOGPIXELSY), lpy);

>

>   ReleaseDC(0, DC);

> end;

>

>

>

> > I want to include a Chart in RichView. I make a metafile and insert it

to

> > Richview. How can I calulate the width of the metafile so it fits on the

> > page when printing.

> >

> > There was a similar question on this newsgroup, where you suggested to

use

> > PrintAreaRect of OnPagePrepaint. However I would like to know that size

> > before printing. Of course it depends of the printer chosen, but I could

> > just use the default printer settings, or even a fixed size in

Milimeters.

> > It sould probably be the width in screen cooridnates because it is

scaled

> to

> > printer resolution when printing, as I understand.

> >

> > Benedikt

> >

> >

> >

>

>