[Gambas-user] Working printsample with more than one page

[Rolf-Werner Eilert]

Basically, I think that is easy here: Just send a Return when the "last" 
row has been reached, and it will leave the printing and start a new page.

Still, you have to define the number of page to be printed in order to 
be able to start printing.

That makes it somewhat... errr.... ;)

Rolf

Am 03.02.2016 16:05, schrieb Roel Touwen:
> Hi Rolf,
>
> In my software I print invoice, lists, whatever.....  When I print
> invoices I print the lines with a function which calculates where it has
> to print on the page:
>
> Public Sub PrintAt(Row As Float, Col As Integer, Txt As String)
>
>     txtWidth = Draw.Font.TextWidth(txt)
>     txtHeight = Draw.Font.TextHeight(txt)
>     PosY = Row * 162
>     posX = Col * 55 + 50
>     Paint.DrawRichText(Txt, PosX, PosY, txtWidth, txtHeight)
>
> End
>
> Now I want to skip to the next page when variable Row exceeds a value.
> But somehow I cannot find how I can skip to the next page. So what I am
> realy looking for is the addpage function which was available in gambas 2.
> Whe I fiddled arount in my code by telling there were 2 pages, the
> content on page 2 was nog cleared, e.g. it was the same as on page 1.
>
> Any ideas?
>
> Grtz
>
> Roel Touwen
>
>
>
> op 03-02-16 15:57, Rolf-Werner Eilert schreef:
>> Hi Roel,
>>
>> The way printing is managed in Gambas3 is completely different in one
>> way: You have to tell the number of pages beforehand, then printing runs
>> automatically page for page.  There is one help page that gives a rough
>> overview.
>>
>> Why do you want to clear a page? Your code will have to check what to
>> print on each page while it is printing, and you cannot stop until all
>> pages have been printed.
>>
>> In my case, the problem was how to print tables of random length.
>> Gambas2 was "simple": The program just printed a table line for line,
>> then initiated a new page when the table had reached the lower edge.
>>
>> Now I found this solution for Gambas3: The table will start at a given
>> position on the page. There are functions that I could use to measure
>> the exact height of each table line. It sums up until it finds it will
>> hit the lower end, then save the number of this line in a list, go on to
>> the next end of page and so on... After measuring and counting, the
>> number of entries in the list will tell how many pages are needed, and
>> printing can be started.
>>
>> I found that the new way of printing is way faster than the old one. It
>> is in fact so fast that I could simply print into a temporary pdf file,
>> then use this file for a preview. When the user hits OK, this pdf is
>> sent to the printer.
>>
>> On the other hand, I had to re-think a number of functions and when this
>> will happen before that etc., and still haven't completely finished :)
>>
>> Regards
>> Rolf
>>
>> Am 03.02.2016 12:03, schrieb Roel Touwen:
>>> Hi all,
>>>
>>> I'm converting software from Gambas 2 to 3. Printing seems to be very
>>> very different in Gambas 3.
>>>
>>> Has anyone a sample of printing more pages? So also clearing the page etc.
>>>
>>> Thanks for now.
>>>
>>> Best regards,
>>>
>>> Roel
>>>
>>>
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