Microsoft KB Archive/102710

= MFX Draw: 16-Bit Device Drivers Incompatible with Windows NT =

Article ID: 102710

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Advanced Server 3.1

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This article was previously published under Q102710





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 query words: prodnt

Keywords: kb3rdparty kbgraphic KB102710

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