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wxPrintPreview

include file: wxPrint.e


Creation parameters:

Previewing is started by showing the preview frame.

Properly scaling the print preview is fairly simple. There are three pieces of data that are required:

You can get the scaling factor required by dividing the results of get_dc_size() by get_page_pixels(). Pass the result to set_user_scale(). Now, you can use coordinates in inches multiplied by the printer ppi (relative to the margins):
    procedure onPrintPage( atom this, atom page, atom dc )
        sequence ppi, factor

ppi = get_ppi_printer( this ) if is_preview( this ) then factor = get_dc_size( dc ) / get_page_pixels( this ) set_user_scale( dc, factor[1], factor[2] ) else set_user_scale( dc, 1, 1) end if

-- print "Hello World" at 1", 1" wx_puts( 0 & ppi * {1,1} & dc, "Hello World" ) end procedure

  • func get_preview_frame( atom preview )   
  • func get_zoom( atom preview )   
  • proc set_preview_frame( atom preview, atom frame )     
     
    Parent Topics:
  • Printing


    Table of Contents

    [func]
    get_preview_frame
    ( atom preview )

    Category: wxPrintPreview

    See Also: get_zoom, set_preview_frame



    Table of Contents

    [func]
    get_zoom
    ( atom preview )

    Category: wxPrintPreview

    See Also: get_preview_frame, set_preview_frame



    Table of Contents

    [proc]
    set_preview_frame
    ( atom preview, atom frame )

    Category: wxPrintPreview

    See Also: get_preview_frame, get_zoom