1. Writing direct to printer
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I have a project whereby I need to write a log file to the printer port
as fast as it appears - but Windows only outputs anything when you
throw a page.
I have tried using the Windows routine WritePrinter() but it needs the
handle to the the printer DC, and I can't seem to get that anywhere.
I use Win32Lib 59.1 and Judith's IDE to write my code - plus my own
DLL to call WritePrinter because that lives in WinSpool.lib and not in
a DLL.
Does anyone know where I can find the handle of the DC that Win32Lib
gets when you call getPrinter() in that library? I have the DC itself, but
that doesn't seem to help. I don't think I understand handles......
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<DIV><FONT face=Arial size=2>I have a project whereby I need to write a log file
to the printer port</FONT></DIV>
<DIV><FONT face=Arial size=2>as fast as it appears - but Windows only outputs
anything when you</FONT></DIV>
<DIV><FONT face=Arial size=2>throw a page.</FONT></DIV>
<DIV><FONT face=Arial size=2>I have tried using the Windows routine
WritePrinter() but it needs the</FONT></DIV>
<DIV><FONT face=Arial size=2>handle to the the printer DC, and I can't seem to
get that anywhere.</FONT></DIV>
<DIV><FONT face=Arial size=2>I use Win32Lib 59.1 and Judith's IDE to write my
code - plus my own</FONT></DIV>
<DIV><FONT face=Arial size=2>DLL to call WritePrinter because that lives in
WinSpool.lib and not in</FONT></DIV>
<DIV><FONT face=Arial size=2>a DLL.</FONT></DIV>
<DIV><FONT face=Arial size=2>Does anyone know where I can find the handle of the
DC that Win32Lib</FONT></DIV>
<DIV><FONT face=Arial size=2>gets when you call getPrinter() in that library? I
have the DC itself, but</FONT></DIV>
<DIV><FONT face=Arial size=2>that doesn't seem to help. I don't think I
understand handles......</FONT></DIV>
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2. Re: Writing direct to printer
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as fast as it appears - but Windows only outputs anything when you
throw a page.
I have tried using the Windows routine WritePrinter() but it needs the
handle to the the printer DC, and I can't seem to get that anywhere.
I use Win32Lib 59.1 and Judith's IDE to write my code - plus my own
DLL to call WritePrinter because that lives in WinSpool.lib and not in
a DLL.
Does anyone know where I can find the handle of the DC that Win32Lib
gets when you call getPrinter() in that library? I have the DC itself, but
that doesn't seem to help. I don't think I understand handles......
What you should be able to do, which I'm sure Derek will correct me, is be able
to use getDC(Printer) which returns a Win32lib ID for the Handle to the DC. You
should be able to get the Actual Win32 Handle from getHandle(getDC(Printer)).
Again, I could be wrong, and I'm sure Derek will correct me on this.
EuMario
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<DIV>============ The Euphoria Mailing List ============ <BR><FONT face=Arial
size=2>I have a project whereby I need to write a log file to the printer
port</FONT></DIV>
<DIV><FONT face=Arial size=2>as fast as it appears - but Windows only outputs
anything when you</FONT></DIV>
<DIV><FONT face=Arial size=2>throw a page.</FONT></DIV>
<DIV><FONT face=Arial size=2>I have tried using the Windows routine
WritePrinter() but it needs the</FONT></DIV>
<DIV><FONT face=Arial size=2>handle to the the printer DC, and I can't seem to
get that anywhere.</FONT></DIV>
<DIV><FONT face=Arial size=2>I use Win32Lib 59.1 and Judith's IDE to write my
code - plus my own</FONT></DIV>
<DIV><FONT face=Arial size=2>DLL to call WritePrinter because that lives in
WinSpool.lib and not in</FONT></DIV>
<DIV><FONT face=Arial size=2>a DLL.</FONT></DIV>
<DIV><FONT face=Arial size=2>Does anyone know where I can find the handle of the
DC that Win32Lib</FONT></DIV>
<DIV><FONT face=Arial size=2>gets when you call getPrinter() in that library? I
have the DC itself, but</FONT></DIV>
<DIV><FONT face=Arial size=2>that doesn't seem to help. I don't think I
understand handles......</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What you should be able to do, which I'm sure Derek
will correct me, is be able to use getDC(Printer) which returns a Win32lib ID
for the Handle to the DC. You should be able to get the Actual Win32
Handle from getHandle(getDC(Printer)). Again, I could be wrong, and I'm
sure Derek will correct me on this.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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3. Re: Writing direct to printer
----- Original Message -----
>From: Andy Drummond
>Subject: Writing direct to printer
>
>
>
>I have a project whereby I need to write a log file to the printer port
>as fast as it appears - but Windows only outputs anything when you
>throw a page.
>I have tried using the Windows routine WritePrinter() but it needs the
>handle to the the printer DC, and I can't seem to get that anywhere.
That's not what my documentation says. I read it that WritePrinter needs the
handle to the printer; no DC is mentioned. To get that handle you need to call
the API OpenPrinter().
>I use Win32Lib 59.1 and Judith's IDE to write my code - plus my own
>DLL to call WritePrinter because that lives in WinSpool.lib and not in
>a DLL.
>Does anyone know where I can find the handle of the DC that Win32Lib
>gets when you call getPrinter() in that library? I have the DC itself, but
>that doesn't seem to help. I don't think I understand handles......
The DC is NOT required.
--
Derek
