Creation parameters:
- wxPrintout
- wxPrintout If this is non-null, then a Print...
button will be placed on the preview frame so that the
user can print directly from the preview interface
- wxPreviewFrame [if not supplied, one will be created, which can
be accessed through get_preview_frame]
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):
code
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
endcode
func get_preview_frame( atom preview )
func get_zoom( atom preview )
proc set_preview_frame( atom preview, atom frame )
Parent Topics:
Printing
Category: wxPrintPreview
This returns an integer which serves as a pointer to the wxPrintPreview.
See Also:
get_zoom,
set_preview_frame
Category: wxPrintPreview
See Also:
get_preview_frame,
set_preview_frame
Category: wxPrintPreview
This sets the selected wxPrintPreview to be a print previewer for the specified wxFrame.
See Also:
get_preview_frame,
get_zoom