Re: how can I limit the the document's vertical size?

Author

Message

Sergey Tkachenko

Posted: 06/10/2003 22:04:15

This code allows to resize RichView so that it _approximately_ corresponds

to the size on the page.

Wrapping in the same places as on the paper is not 100% guaranteed.

Using:

var w, h: Integer;

// rvoClientTextWidth must be excluded from RichViewEdit1.Options.

GetPageSize(RVPrint1, w,h);

RichViewEdit1.MaxTextWidth :=

w-RichViewEdit1.LeftMargin-RichViewEdit1.RightMargin;

RichViewEdit1.Height := h { + border width };

RichViewEdit1.Format;

procedure GetPageSize(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;

"Victor" <[email protected]> wrote in message

news:[email protected]...

> Actually, I just want a A4 PageSize Editor to provide a WSWG functions.

> "Sergey Tkachenko" <[email protected]> д��ʼ�

> news:[email protected]...

> > Try the following:

> > In OnChange, check DocumentHeight property. If it's too large, call

Undo.

> >

> > You do you want single line editor?

> >

> > > Hi I want limit the RichviewEdit's document's vertical size.I mean I

> want

> > > prevent that user input some thing will change the document's vertical

> > size.

> > > how can I do it?

> > >

> >