Method Print

src/pkg/walk/document.go:228–278

()

}

func (doc *Document) Print() (err os.Error) {
	defer func() {
		if x := recover(); x != nil {
			err = toError(x)
		}
	}()

	hdc := doc.pages[0].info.createDC()
	defer DeleteDC(hdc)

	var di DOCINFO
	di.CbSize = int32(unsafe.Sizeof(di))
	di.LpszDocName = syscall.StringToUTF16Ptr(doc.name)

	if StartDoc(hdc, &di) <= 0 {
		return newError("StartDoc failed")
	}
	defer func() {
		if EndDoc(hdc) <= 0 {
			err = newError("EndDoc failed")
		}
	}()

	canvas, err := newCanvasFromHDC(hdc)
	if err != nil {
		return err
	}
	defer canvas.Dispose()

	for i, page := range doc.pages {
		if i > 0 {
			// TODO: Only reset dc if required.
			page.info.resetDC(hdc)
		}

		if StartPage(hdc) <= 0 {
			return newError("StartPage failed")
		}

		err = page.Draw(canvas)
		if err != nil {
			return err
		}

		if EndPage(hdc) <= 0 {
			return newError("EndPage failed")
		}
	}

	return nil
}