"opaque pixels"

[richmond62]

I should apologise because this:

graphic objects WILL behave like the images they have as backGroundPatterns insofar as whether
mouseDown/Up clicks get a reaction out of transparent areas.

is NOT true.

[richmond62]

I wonder why this does not work:
-

[Samuele]

I should apologise because this:

graphic objects WILL behave like the images they have as backGroundPatterns insofar as whether
mouseDown/Up clicks get a reaction out of transparent areas.

is NOT true.

so that's not the aswer?

[richmond62]

No, I am afraid it isn't.

One answer might be to convert your PNG images with transparency to GIF images: they should get much smaller.

[Samuele]

allright, i thoght GIFs were much bigger

[richmond62]

8Ball.gif (12.58 KiB) Viewed 3251 times

-
GIF = 13 KB

-

8Ball.png (54.2 KiB) Viewed 3251 times

-
PNG = 54 KB

[stam]

Alternatively, if you are concerned that the stack size will increase because you have multiple copies of the same image on multiple cards, make the image a group and set it to be a background group. The same image will appear in the same place on all new cards (you can place it on existing cards with the place object menu item). That way you will have just the one image on multiple cards.

[richmond62]

Alternatively

I don't know about Samuele, Stam, but I would like to thank you for telling me something
I did not know about after 20 odd years of working with RunRev/LiveCode.

[dunbarx]

What is all this hoopla??

The "mouseColor" returns the color of the pixel the cursor is over. If it is "blank", or "empty", assuming an "ordinary' card, the function will return "255,255,255". If not, that is, if there is something "there", you will get another value.

Is this not what the OP wanted?

Craig

[richmond62]

What is all this hoopla??

I think the topic has drifted somewhat since that question was (at least partly) answered.

[jacque]

allright, i thoght GIFs were much bigger

JPEG is the smallest format, particularly because you can set the compression to the smallest size that will still display correctly on the screen.

Edit: It doesn't support transparency though, so not suitable here.

[dunbarx]

Richmond

I think the topic has drifted somewhat since that question was (at least partly) answered.

Indeed, but to my mind the use of these extra gadgets is a kludge. I assert that LC can do the job without one.
Certainly, if the backColor of the card is something in particular, then that would be the "empty" value.

The only reason I can see for these other image-heavy solutions is if the "backColor" of the card is itself an image, or a pattern or color of some kind.

Craig

[richmond62]

The only reason I can see for these other image-heavy solutions is if the "backColor" of the card is itself an image, or a pattern of some kind.

I suspect you are right.

[richmond62]

So, taking advice from Craig, and advice from myself about displaying an image as
a backGroundPattern in a Graphic Rectangle:
-