Toggle checkboxes in grid through button

[r0n]

Is it possible to toggle checkboxes in a grid through a button?
If I put this code in the case WM_INITDIALOG code of a dialog, then the code works and renders checkboxes.
g.GridStyleSet(32)
or
g.GridStyleSet(GRID.QG_CHECKBOXES)

But if I attach the above lines to a button, then it does not work.
(grid needs some kind of refreshing/reloading?)

Is it possible?

[Gintaras]

Function Dialog194

Code:

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str dd=
;BEGIN DIALOG
;0 "" 0x90C80AC8 0x0 0 0 224 136 "Dialog"
;3 QM_Grid 0x56031041 0x200 0 0 96 48 "0[]A[]B"
;4 Button 0x54012003 0x0 0 52 48 10 "Check"
;1 Button 0x54030001 0x4 116 116 48 14 "OK"
;2 Button 0x54030000 0x4 168 116 48 14 "Cancel"
;END DIALOG
;DIALOG EDITOR: "" 0x2040308 "*" "" "" ""

str controls = "3 4"
str qmg3 c4Che
qmg3="one,1[]two,2"
if(!ShowDialog(dd &sub.DlgProc &controls)) ret


#sub DlgProc
function# hDlg message wParam lParam

DlgGrid g.Init(hDlg 3)
sel message
,case WM_INITDIALOG
,case WM_DESTROY
,case WM_COMMAND goto messages2
ret
;messages2
sel wParam
,case 4
,g.GridStyleSet(32 2-but(lParam))
,
ret 1

[r0n]

Thank you!!!