Parameters flag in the function do not work

[Kevin]

I think you're asking for the mouse to be center of the dialog if so, this should do it
 

Code:

Copy      Help

function str'T S [Mou] [flag]

MES m

if(flag&2)
,m.style="OCa"
if(flag&4)
,m.style="YNCa"

m.default='C'; m.timeout=S

if(Mou&1)
,m.x=xm
,m.y=ym
,mac "sub.centerOnMouse"

_i=mes(F"{T}" "tip" m)
ret _i

#sub centerOnMouse
int w=wait(0 WC win("tip" "#32770"))
int x y cx cy
GetWinXY w x y cx cy
mov x-(cx/2) y-(cy/2) w