ID:OM Memory Errors in DESQview
Quarterdeck Technical Note #114
by Stan Young

An out of memory message when loading a program means one of three things: 

 1.  There has not been enough memory allocated to the program and the
program is giving the error message.  In this case, run DESQview's Change a
Program and allocate more memory (in the Memory Size in K field).  Remember,
regardless of the total memory on your machine, the program will only see
what was allocated to the window.

 2.  You have allocated too much memory to the window and DESQview is giving
you a message indicating it doesn't have enough free memory to make the
partition that big.  Try making the figure in "Memory Size in K" smaller. 
Run the DESQview Memory Status program and check the figure listed in the
field Conventional Memory/Largest Available.  This figure should give you a
clue as to the maximum size window you can open after allowing for an 11K
overhead if you are loading a text based program or 22K for a graphics based
program.

 3.  You may have entered a value for "System Memory (in K)" on the advanced
options menu of Change a Program.  For non-DESQview specific programs, this
figure should always be zero.  Even in the case of DESQview specific
programs, this figure would rarely be above 10K.  Having a figure in this
field increases the overhead for the window by a corresponding amount.

When selecting a memory size for your application, you should consult the
program's user manual to see what the developers feel is the minimum memory
requirement.  Usually, this is stated in the early portions of the manual or
sometimes on the box that the manual came in.  Generally you can deduct
30-40K from this number, since these numbers are generally given in standard
"round" machine sizes and account for the overhead of loading DOS and a few
drivers.  This overhead need not be calculated as part of the DESQview window
size.

                Copyright (C) 1991 by Quarterdeck Office Systems
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