How I can set focus on Install button?

;--------------------------------
;Pages

;!insertmacro MUI_PAGE_LICENSE ""

Page custom SetCustomA LeaveCustomA
Page custom SetCustomB LeaveCustomB

!insertmacro MUI_PAGE_COMPONENTS

!define MUI_PAGE_CUSTOMFUNCTION_SHOW ShowDirectory
!insertmacro MUI_PAGE_DIRECTORY

!insertmacro MUI_PAGE_INSTFILES

!insertmacro MUI_UNPAGE_CONFIRM
!insertmacro MUI_UNPAGE_INSTFILES

Function ShowDirectory
; [Get HWND current page of installation]
FindWindow $hwnd "#32770" "" $HWNDPARENT

; [Disable Directory field]
GetDlgItem ${TEMP} $hwnd 1019 ; IDC_DIR
EnableWindow ${TEMP} 0

; [Disable Directory GroupBox]
GetDlgItem ${TEMP} $hwnd 1020 ; IDC_SELDIRTEXT
EnableWindow ${TEMP} 0

; [Disable Browse... button]
GetDlgItem ${TEMP} $hwnd 1001 ; IDC_BROWSE
EnableWindow ${TEMP} 0

; [Disable label]
GetDlgItem ${TEMP} $hwnd 1006 ; IDC_INTROTEXT
EnableWindow ${TEMP} 0

; [Set focus on Install button]
GetDlgItem ${TEMP} $hwnd 105 ;
; TEMP - return 0
SendMessage $hwnd ${WM_NEXTDLGCTL} ${TEMP} 1 ; Set focus on Install button
FunctionEnd

NOT WORK

Thank you

It's the default button, so it should work when you press Enter.

You're sending the message to the wrong window. The next button is on $HWNDPARENT, not on the inner dialog.

Thank you

Problem is solved as follows:

; [Set focus on Install button]
; Get Item of Install button
GetDlgItem ${TEMP} $HWNDPARENT 1
; Enable Install button
EnableWindow ${TEMP} 1
; Set focus on Install button
SendMessage $HWNDPARENT ${WM_NEXTDLGCTL} ${TEMP} 1