[Solucionado]Insertar columna en listview (dialogboxparam)

[.:UND3R:.]

Hola a todos, actualmente estoy aprendiendo sobre listview y me surge la siguiente duda con el parámetro hWnd de la API SendMessage:

Tengo el siguiente código:

Código (asm) [Seleccionar] Expandir

TITLE  listview

.386
option casemap:none
.model flat,stdcall
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\user32.inc
include c:\masm32\include\comctl32.inc

includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\user32.lib
includelib c:\masm32\lib\comctl32.lib

DlgProc PROTO,
hWnd:HWND,
uMsg:UINT,
wParam:WPARAM,
lParam:LPARAM

.const

.data
DlgName byte "Hola",0
Heading1 byte "Test1",0
Heading2 byte "Test2",0

.data?
hInstance HINSTANCE ?
CommandLine LPSTR ?

.code
InsertColumn proc,
hWnd:HWND
LOCAL lvc:LV_COLUMN
mov lvc.imask,LVCF_TEXT+LVCF_WIDTH
mov lvc.pszText,offset Heading1
mov lvc.lx,150
invoke SendMessage,hWnd, LVM_INSERTCOLUMN,0,addr lvc
or lvc.imask,LVCF_FMT
mov lvc.fmt,LVCFMT_RIGHT
mov lvc.pszText,offset Heading2
mov lvc.lx,100
invoke SendMessage,hWnd, LVM_INSERTCOLUMN, 1 ,addr lvc
ret
InsertColumn endp

start:
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke GetCommandLine
mov CommandLine,eax
invoke DialogBoxParam,hInstance,ADDR DlgName,NULL,ADDR DlgProc,NULL
invoke ExitProcess,eax
DlgProc PROC hWnd:HWND,uMsg:UINT,wParam:WPARAM,lParam:LPARAM
.IF uMsg == WM_INITDIALOG
invoke InitCommonControls
invoke InsertColumn,hWnd
; invoke GetDlgItem,hWnd,IDC_FOCUS
; invoke SetFocus,eax
.ELSEIF uMsg == WM_CLOSE
invoke EndDialog,hWnd,NULL
.ELSE
mov eax,FALSE
ret
.ENDIF
mov eax,TRUE
ret
DlgProc ENDP
END start

El problema que tengo es que la siguiente línea no funciona correctamente:

Código (asm) [Seleccionar] Expandir

invoke SendMessage,hWnd, LVM_INSERTCOLUMN,0,addr lvc

¿alguien podría guiarme para insertar las columnas?, saludos y gracias de ante mano

Solución: obtener con GetDlgItem el manejador:

Código (asm) [Seleccionar] Expandir

TITLE  listview

.386
option casemap:none
.model flat,stdcall
include c:\masm32\include\windows.inc
include c:\masm32\include\kernel32.inc
include c:\masm32\include\user32.inc
include c:\masm32\include\comctl32.inc

includelib c:\masm32\lib\kernel32.lib
includelib c:\masm32\lib\user32.lib
includelib c:\masm32\lib\comctl32.lib

DlgProc PROTO,
hWnd:HWND,
uMsg:UINT,
wParam:WPARAM,
lParam:LPARAM

.const
IDC_LSV1 equ 1001

.data
DlgName byte "Hola",0
Heading1 byte "Test1",0
Heading2 byte "Test2",0

.data?
hInstance HINSTANCE ?
CommandLine LPSTR ?

.code
InsertColumn proc,
hWnd:HWND
LOCAL lvc:LV_COLUMN
mov lvc.imask,LVCF_TEXT+LVCF_WIDTH
mov lvc.pszText,offset Heading1
mov lvc.lx,150
invoke SendMessage,hWnd, LVM_INSERTCOLUMN,0,addr lvc
or lvc.imask,LVCF_FMT
mov lvc.fmt,LVCFMT_RIGHT
mov lvc.pszText,offset Heading2
mov lvc.lx,100
invoke SendMessage,hWnd, LVM_INSERTCOLUMN, 1 ,addr lvc
ret
InsertColumn endp

start:
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke GetCommandLine
mov CommandLine,eax
invoke DialogBoxParam,hInstance,ADDR DlgName,NULL,ADDR DlgProc,NULL
invoke ExitProcess,eax
DlgProc PROC hWnd:HWND,uMsg:UINT,wParam:WPARAM,lParam:LPARAM
.IF uMsg == WM_INITDIALOG
invoke InitCommonControls
invoke GetDlgItem,hWnd,IDC_LSV1
invoke InsertColumn,eax
; invoke GetDlgItem,hWnd,IDC_FOCUS
; invoke SetFocus,eax
.ELSEIF uMsg == WM_CLOSE
invoke EndDialog,hWnd,NULL
.ELSE
mov eax,FALSE
ret
.ENDIF
mov eax,TRUE
ret
DlgProc ENDP
END start