Entry
R2 = window handle or 0 for slabbed icon
R3 = icon handle
R4 = flags :
Bit Meaning
0 slab in, otherwise slab out
1 use async list, otherwise use sync list
2-31 reserved; MUST BE 0
To be called to force an icon to be slabbed (for example to slab the default action icon if Return is pressed). The icon will be popped in or out depending on R4. If R2 is zero then all the icons in the specified list are used (remember that if you do this to the async list then it could leave some ESGs with no icon selected).
If you specify an async button and list, then the other icons in the ESG (if the ESG is not 0) will be unslabbed and removed from the list.
Provided by 3DIcons
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