🚀 go-pugleaf

Hi Sky

  In article <3ea349fc$1@newsgroups.borland.com>,  Sky says :

> hi all, I want draw a bitmap on the form,
> Graphics::TBitmap *bmp = new Graphics::TBitmap();
> bmp->LoadFromFile("C:\\temp.bmp");
> bmp->Width = 320; bmp->Height = 240;
> Canvas->Draw(0,0,bmp);
> delete bmp;

You should not set the height and width on a bimap
that contains an image, instead You should use something
like this


TRect Dest = Rect(0, 0, 320, 240);
TRect Src = Rect(0, 0, bmp->Width, bmp->Height);
SetStretchBltMode(Form1->Canvas->Handle, HALFTONE);
SetBrushOrgEx(Form1->Canvas->Handle, 0, 0, 0);
Form1->Canvas->CopyRect(Dest, bmp->Canvas, Src);

> My Question is: Can i convert the size to metric.
> I want set the width of bmp 10cm,
> does anyone can tell me how to do it?
> at the same time i want print it with 10cm on paper.

The only way You can do this is to make the user deside
what is equal to 10 cm, Let them size a for to 10 * 10 cm
and then save that to Your settings.
PixelsPerInch can vary from 96 -> 192 but it is in no
way accurate since the users can choose what ever they 
want on their screen.

Best regards
Asger