[WinPrnDev] Re: Creating a Printer Driver
- From: Abdul Qader <abqader.iqbal@xxxxxxxxx>
- To: winprndev@xxxxxxxxxxxxx
- Date: Thu, 25 Mar 2010 15:03:02 +0530
Sam,
The SPL file is the spool file created by the spooler service . It can have
two formats EMF and RAW. A RAW format is just a bit by bit description of
ever pixel and so it would be dumped to the printer by the driver.
In case of EMF format all the commands that we use to paint the window are
stored .So by using the EMF you can play the commands to the desired context
to reproduce the whole image that you had created in your window.
Technically extracting the EMF from the spool file is undocumented. You can
find the details in Windows Graphics Programming
<http://www.fengyuan.com/> written
by Feng Yuan .
Abdul
On Thu, Mar 25, 2010 at 2:54 PM, Sam Elamin <hussam_88@xxxxxxxxxxx> wrote:
> Abdul
>
>
>
>
> I am trying to understand what you are saying.
>
>
> Do you mean the spool file by "SPL"? and what do you mean by the EMF? what
> does the Virtual Print Processor exactly do?
>
> I am sorry for my complete ignorance but I am very new to the Print Driver
> world (2 days to be exact) so these terms are all new to me.
>
>
> Regards
>
> Sam
>
>
> ------------------------------
> Date: Thu, 25 Mar 2010 11:12:18 +0530
>
> Subject: [WinPrnDev] Re: Creating a Printer Driver
> From: abqader.iqbal@xxxxxxxxx
> To: winprndev@xxxxxxxxxxxxx
>
> Sam,
>
> You can get the SPL files from the Printers folder.You will need to extract
> the EMF from the spool file and play the EMF on the corresponding context.
> So you will need to create a Virtual Print Processor.The path where the
> spool files are stored are kept in the registry.
> The PrintProcessor exports some calls of which
> PrintDocumentonPrintProcessor is what you need to look out for.
>
> Please let me know if you need more info on this.We had implemeted some
> thing close to what you did.
>
> Thanks
> Abdul
>
> On Tue, Mar 23, 2010 at 9:48 PM, Sam Elamin <hussam_88@xxxxxxxxxxx> wrote:
>
> Hello Everyone
>
>
> I am trying to develop a printer driver which will be installed on a client
> side, what i need this driver to do is just save the path of documents sent
> to it to a string and forward that string to an ASP.NET application which
> will upload the document to a print server.
>
>
> now i already have the upload client working so here is the scenario which
> the printer will work on.
>
>
> Document "X" is printed to a printer with the installed driver (Printer
> "A")
>
>
> Printer "A" will then get the path of the given document and save it to
> string "Path", "Path" will then be sent to a Webpage which will upload it.
>
>
>
>
> I kept it as basic as possible because i just want to know if it could be
> done?
>
>
> Regards
> Sam
>
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