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

Wed Feb 3 17:34:43 CET 2016

Many, many thanks. I all makes sense now.

Best regards,

Roel

Op 03-02-16 om 16:59 schreef Rolf-Werner Eilert:
> What I meant is the Return command. Sorry, somewhat unfocused...
>
> Somewhere you start, e. g. in a Sub Start (). There you collect your
> data and stuff and build the printer object, e. g. myPrinter.
>
> Then you say myPrinter.Print which will jump to Sub myPrinter_Begin().
>
> Now you have everything running except the actual printing. But you can
> already measure how long your table will be and so on. When you know how
> many pages will result, you say myPrinter.Count =
> numberOfPagesToBePrinted and it will automagically jump into Sub
> myPrinter_Draw() as many times as pages are needed.
>
> While printing, if you want to end the page, within myPrinter_Draw(),
> you can say
>
> Return
>
> when you want to stop before the codes ends anyway to stop this page.
> But I don't need this anymore, as my new code will stop painting the
> table at the right line anyway. Then printing is ready for this page,
> and myPrinter_Draw() will end itself.
>
> Regards
> Rolf
>
>
>
> Am 03.02.2016 16:22, schrieb Roel Touwen:
>> Hi Rolf,
>>
>> Sounds easy, but (maybe a stupid question) but where do I send the return?
>>
>> Grtz
>>
>> Roel
>>
>>
>>
>> op 03-02-16 16:19, Rolf-Werner Eilert schreef:
>>> 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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>
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