Re: Windows Printers

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#12455

From: Bob Gonder
Date: Thu, 04 Dec 2003 16:01

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John Scott wrote:

>
>DeviceMode returns the handle to a memory buffer containing a DEVMODE
>structure, which contains device-specific initialization data for the device
>driver. Use the GlobalLock function to convert this handle into a pointer to
>the structure.
>
>I Guess I need to explore that GlobalLock function. I want to stick with the
>VCL as much as possible since the existing code is VCL.

Yes, essentially what it is doing is a variation on what I posted...
Instead of this
>> DevMode = (DEVMODE*)GlobalAlloc( GMEM_FIXED |GMEM_ZEROINIT,num_bytes);
it's doing this
>> ADevMode = (DEVMODE*)GlobalAlloc( GMEM_MOVEABLE ,num_bytes);

You then need to go through the extra step
DEVMODE*DevMode = (DEVMODE*)GlobalLock(ADevMode);
Then you can use the DevMode->dmFields code
Don't forget to GlobalUnlock(ADevMode) when you are done.

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From: Bob Gonder <notbg@notmindspring.invalid>
Newsgroups: borland.public.cppbuilder.nativeapi
Subject: Re: Windows Printers
Date: Thu, 04 Dec 2003 08:01:38 -0800
Organization: MindSpring Enterprises, Inc.
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