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Index > Windows > What does function DrawEscape?

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A$M



Joined: 29 Feb 2012
Posts: 94
A$M
Hi.
I don't know what's this function: http://msdn.microsoft.com/en-us/library/windows/desktop/dd162478
I only know this: "The DrawEscape function provides drawing capabilities of the specified video display that are not directly available through the graphics device interface (GDI)."
But why and how I would use it? Can you give me a example code?

Thanks.
Post 15 Apr 2014, 18:07
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JohnFound



Joined: 16 Jun 2003
Posts: 3502
Location: Bulgaria
JohnFound
Quote:
Remarks

When an application calls the DrawEscape function, the data identified by cbInput and lpszInData is passed directly to the specified display driver.


Read the remarks. The format of cbInput is not clear. Maybe it is described elsewhere, or is device specific...
Post 15 Apr 2014, 18:11
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baldr



Joined: 19 Mar 2008
Posts: 1651
baldr
A$M,

There are dozens of printer-related escapes defined in WinGDI.h. I don't know whether escapes are implemented in particular video drivers (you may look here for the short explanation of the mechanics under the hood, search for "display driver escape codes" mini-chapter), yet WinCE MSDN reference contains some promising escape codes you may wish to QUERYESCSUPPORT for.
Post 15 Apr 2014, 20:28
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A$M



Joined: 29 Feb 2012
Posts: 94
A$M
Thanks.
Post 16 Apr 2014, 16:55
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