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1993-11-16
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DOCUMENT:Q102710 04-NOV-1993 [W_NT]
TITLE :MFX Draw: 16-Bit Device Drivers Incompatible with Windows NT
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
--------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
--------------------------------------------------------------
SYMPTOMS
========
You may get unexpected results when you copy items from Micrografx
Draw to the Clipboard and then paste them into another application.
You may lose Draw data on the Clipboard when you exit Draw.
Import and export functions may fail.
CAUSE
=====
These problems are caused by Draw's use of 16-bit graphics drivers,
which Windows NT does not support.
When you copy something to the Clipboard, Draw tries to use its own
16-bit driver to render the image in a private picture format. Draw
calls the CreateDC API for this purpose:
CreateDC(lpDriverName, lpDeviceName, lpOutput,lpInitData)
where the parameter "lpDriverName" is a long pointer to a null
terminated string specifying the MS-DOS filename, without extension,
of the driver ("MGXWMF.DRV", "MGXPCX.DRV", and so on). Under NT, this
call fails because NT does not support 16-bit drivers.
The 16-bit driver also causes loss of data from Clipboard when you
exit Draw and failure of import and export functions, which rely on
the 16-bit driver.
WORKAROUND
==========
To avoid losing Clipboard data, make sure you use it before you exit
Draw.
STATUS
======
No workarounds are available to avoid unexpected results and
import/export failures.
NOTE: Images from other programs exported in Windows to .DRW format
can be edited in Draw when running in Windows NT. However, the central
problem will remain until there is a 32-bit version of Micrografx Draw
or a 32-bit device driver it can use with Windows NT.
Additional reference words: 3.10
KBCategory:
KBSubCategory: 16ap
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1993.