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From: phil@pepsi.amd.com (Phil Ngai)
Newsgroups: comp.sys.ibm.pc,comp.sys.ibm.pc.programmer
Subject: Re: RE programs crashing in Desqview
Message-ID: <29309@amdcad.AMD.COM>
Date: 27 Feb 90 18:49:54 GMT
References: <48e5784c.20b6d@apollo.HP.COM>
Sender: news@amdcad.AMD.COM
Reply-To: phil@pepsi.AMD.COM (Phil Ngai)
Distribution: usa
Organization: Advanced Micro Devices, Inc. Sunnyvale CA
Lines: 38

In article <48e5784c.20b6d@apollo.HP.COM> nelson_p@apollo.HP.COM (Peter Nelson) writes:
| I recently posted a problem about some simple C programs
| crashing in Desqview in graphics mode.  I called Quarterdeck.
| [ Warning: due to recent new releases Quarterdeck's tech support
| staff is swamped.  I called Desqview during their recommended 
| "light" period and had to wait on hold for 25 minutes, at 

Gee, I should be so lucky. All I ever get is a busy signal.

| BTW, before deciding to buy Desqview I had a couple of conversations 
| with their tech support staff to try to assess the risks in using 
| such a product.  One area I focused on was the graphics environment
| They said that they can virtualize it, I expressed doubt.  One major

They supposedly can virtualize all the IBM modes. They make no
claims to handle any extended modes and you should not expect
them to do so.

| area of doubt was color LUT ("palette") collisions.  I said I didn't
| see any way they could keep one application's changing of the 
| color look-up-table from affecting colors in other windows.  They

If you mean windows smaller than full size, of course there is
nothing that can be done about this besides making the active
window have the correct colors, which is something they should
be able to do.

| They DO attempt to read-save-and-restore the LUTS for switching
| windows but this doesn't work reliably.  I've had cases where the 
| colors do not return to their previous state when the other program
| ends.

Did you have the "program uses own colors" mode turned on?


--
Phil Ngai, phil@amd.com		{uunet,decwrl,ucbvax}!amdcad!phil
A PC without DESQview is like Unix without ^Z.