no image should be loaded for "?" in list

[Michiel Spape]

Hi,
Sorry if this has been said before, but just to make sure: I'm a real fan of just going to ms-paint and making a blank (white, or whatever other bg colour you use) picture of exactly the same size as the other images. Due to the BMP specifications, it should take your pc exactly as long as any of the other pictures to load etc, so you can be very sure the timing will not be different for producing blank images (they being images themselves). 
It's basically the same trick I use if I want to see the effect of moving vs static images on slides (you know, with a little loop and a counter and all that); instead of not-moving the images, I just keep moving to the same location, so that the timing is not altered.
Cheers,
Mich

Michiel Spapé
Research Fellow
Perception & Action group
University of Nottingham
School of Psychology


-----Original Message-----
From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of David McFarlane
Sent: 06 November 2009 14:29
To: e-prime at googlegroups.com
Subject: Re: no image should be loaded for "?" in list


Tobi,

Just another thought to throw into the mix...  What if you made an 
"empty" bitmap with a transparent background color?  There are some 
tricks to doing this, you have to fool around with stuff like "Use 
Source Color Key" and "Source Color Key".  I don't have a lot of 
experience with this myself, but if you search online with those 
sorts of terms, or look at the ImageDisplay.SourceColorKey topic in 
the online E-Basic Help, you might get some ideas.

-- David McFarlane, Professional Faultfinder


At 11/5/2009 01:42 PM Thursday, you wrote:
>Hi together,
>
>I have a problem as fallows: I have a display containing n positions
>as specified in the "slide element". Which bitmap is supposed to be
>placed on which position is then defined in a list. Sometimes, I wish
>to have no bitmap at all on some positions. Therefore I left the "?"
>in the list. An error message occurs saying "Filename or image display
>has not been set". It is the same if I leave a blank in the respective
>cell.
>
>I also thought about displaying en empty bitmap (that is in the color
>of the background), however the positions are superimposed. Therefore,
>te bitmaps would only be partly displayed.
>
>Maybe there is an easy solution, I didn't find any.
>Thanks a lot and cheers,
>Tobi




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