comp.lang.idl-pvwave archive: archive » Re: Backing Store Question

Home » Public Forums » archive » Re: Backing Store Question

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Backing Store Question [message #45456 is a reply to message #45455]

Fri, 16 September 2005 11:09

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

R.G. Stockwell wrote:
> "David Fanning" wrote
>
>> Folks,
>>
>> In poking around in the IDL documentation this morning, I came
>> upon this in the WIDGET_DRAW documentation:
>>
>> On some systems, when backing store is provided by the
>> window system (RETAIN=1), reading data from a window
>> using TVRD( ) may cause unexpected results. For example,
>> data may be improperly read from the window even when
>> the image displayed on screen is correct. Having IDL
>> provide the backing store (RETAIN=2) ensures that the
>> window contents will be read properly.
>>
>> Anybody have any idea which systems this is taking about?
>
>
>
> The Commodore 64?

No, it works on my C64 using the x86 emulator. I think they are talking
about the Timex Sinclair 1000 but I'm not sure since I haven't been able
to find enough audio cassette tapes to copy my IDL CD onto to load it up.

Report message to a moderator

[Message index]

		Re: Backing Store Question By: Michael Wallace on Fri, 16 September 2005 11:32
		Re: Backing Store Question By: Rick Towler on Fri, 16 September 2005 11:09
		Re: Backing Store Question By: R.G. Stockwell on Fri, 16 September 2005 07:31

Previous Topic:	Re: contour outside the limits
Next Topic:	Floating divide by 0

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 15:18:14 PDT 2025

Total time taken to generate the page: 0.16279 seconds