On 8/17/2022 1:38 PM, Paul Dupuis via use-livecode wrote:
I can across some old code where I an referring to

if (the effective width of stack X > someValue) then

This code produces no errors and works. However, I was just trying to look up 'effective width' to see exactly what it was doing in the Livecode 9.6.8 Dictionary and struck out!

Under the 'effective' entry in the 9.6.8 Dictionary, 'width' is not listed as an inherited property that 'effective' can be used with. Under 'width' it is not listed. If I look at the entry to the 'stack' object, I find 'width' but that just takes me to the entry for 'width'

Am I imagining something, OR is there such a thing as 'effective width' and if so, where the heck is it documented?

PS. I thought the width of a stack (or window) vs the effective width was teh difference between the inner dimensions of the stack (the card size) and the sizeĀ  of the stack with borders and titlebar (outer dimensions). I forget which is which and, again, can not find it documented! Also, I thought that contrary to the Dictionary entry to the 'effective' keyword, you could SET the 'effective width' of a stack/window to change the size of the outer dimensions(?)

I'd appreciate any pointers to where effective width or effective height of a stack is documented.

So testing shows that (in LC 9.6.8 at any rate) the following STACK properties can use the effective keyword:
height
width
rect (or rectangle)
left
right
top
bottom
topLeft
topRight
bottomLeft
bottomRight

and, indeed, the different between the property and the effective property is the property (inside dimensions) and effective property (outside dimensions)

The "effective" keyword is ONLY documented with the rect/rectangle property in the Dictionary and not for any other dimensional properties, even though they work as expected (well except for Window 10: https://quality.livecode.com/show_bug.cgi?id=16305)

It also appears (from testing) that you can set the effective rect (as documented in the rect Dictionary entry) and set the effective width or the effective height (not documented in the Dictionary). I have not yet tried setting the "effective" form of the remaining dimensional properties (top, left, topLeft, etc.)


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