Trying to use OR, but keep getting "constant expected"

[uziq]

How can I add flags together (using OR)?
This doesn't work..

Code Select Expand


.data?
icontype DWORD ?

.
.
.

mov icontype, MB_ICONINFORMATION
invoke MessageBox, NULL, addr msg, addr dialogtitle, MB_SYSTEMMODAL or icontype


[hutch--]

The problem occurs because "icontype" is a runtime value where the "or" operator between two styles is an assembly time operator which only works with a constant value.

Try something like this.

Code Select Expand


mov icontype, MB_SYSTEMMODAL
; more code
or icontype, MB_ICONINFORMATION
; more code
invoke MessageBox, NULL, addr msg, addr dialogtitle, icontype


[uziq]

Great! Thanks!  :bg