ListVew with icons, NULL return on LVM_SETIMAGELIST

Hello, I have a problem setting up a listview dialog. All the functions work well except the 'LVM_SETIMAGELIST' message to the dialog window. That's the list creation code:

Code:

llistaImatgesG=ImageList_Create(GetSystemMetrics(SM_CXICON),GetSystemMetrics(SM_CYICON),ILC_COLOR32|ILC_MASK,1,1);
llistaImatgesP=ImageList_Create(GetSystemMetrics(SM_CXSMICON),GetSystemMetrics(SM_CYSMICON),ILC_COLOR32|ILC_MASK,1,1);
hIcona=LoadIcon(NULL,MAKEINTRESOURCE(IDI_QUESTION));
ImageList_AddIcon(llistaImatgesG,hIcona);
ImageList_AddIcon(llistaImatgesP,hIcona);

I have used a static global vars for the image lists, like:

Code:

HICON hIcona;
static HIMAGELIST llistaImatgesG;
static HIMAGELIST llistaImatgesP;

now the listview creation is

Code:

CreateWindowEx(WS_EX_CLIENTEDGE,WC_LISTVIEW,"",WS_CHILD|WS_TABSTOP|WS_VISIBLE|LVS_SHOWSELALWAYS|LVS_NOSORTHEADER|LVS_ICON|LVS_SHAREIMAGELISTS,100,100,200,200,hwnd,(HMENU)LLISTA,hInstance,NULL);
vsm=SendMessage(GetDlgItem(hwnd,LLISTA),LVM_SETIMAGELIST,(WPARAM)llistaImatgesG,(LPARAM)LVSIL_NORMAL);
if(vsm==(LPARAM)NULL)
            {
            MessageBox(hwnd,"Error on SETIMAGELIST","",MB_OK);
            }
        vsm=SendMessage(GetDlgItem(hwnd,LLISTA),LVM_SETIMAGELIST,(WPARAM)llistaImatgesP,(LPARAM)LVSIL_SMALL);
if(vsm==(LPARAM)NULL)
            {
            MessageBox(hwnd,"Error on SETIMAGELIST","",MB_OK);
            }

is there on the 'SETIMAGELIST' message where I get a NULL return on both cases, but I'm sure that the image list is right because I can paint it on the WM_PAINT message with:

Code:

case WM_PAINT:
        {
        RECT area;
        GetClientRect(hwnd,&area);
        hdc=BeginPaint(hwnd,&ps);
        ImageList_Draw(llistaImatgesG,0,hdc,0,0,ILD_NORMAL);
        ImageList_Draw(llistaImatgesP,0,hdc,100,0,ILD_NORMAL);
        EndPaint(hwnd,&ps);
        }
    break;

so I think that the only problem is on the 'appending' the image list to the listview.
How can I solve that? Or, what I'm doing wrong?

Thank's in advance
Niara

It seems you have the WPARAM and LPARAM of LVM_SETIMAGELIST the wrong way round, try:

Code:

vsm=SendMessage(GetDlgItem(hwnd,LLISTA),
                LVM_SETIMAGELIST,
                LVSIL_NORMAL,
                (LPARAM)llistaImatgesG);

Hello Ken Fitlike, it works right in the way you post. But take a look at the description on the win32 api reference manual about 'LVM_SETIMAGELIST':

Code:

The LVM_SETIMAGELIST message assigns an image list to a list view control. You can send this message 
explicitly or by using the ListView_SetImageList macro.

LVM_SETIMAGELIST  
wParam = (WPARAM) (int) iImageList; 
lParam = (LPARAM) (HIMAGELIST) himl; 
 
Parameters

himl: Handle to the image list to assign.

iImageList: Type of image list. This parameter can be one of the following values:

LVSIL_NORMAL	Image list with large icons
LVSIL_SMALL	Image list with small icons
LVSIL_STATE	Image list with state images
 
Return Values: Returns the handle of the image list previously associated with the control if successful; NULL 
otherwise.

(I have omitted some text, but is still the same explanations). As I understand it should be working in the way I post... but as like in lots of ms features there's some magic to use to make it work

But for now I can continue with my work; thank's Ken for your time and help.
Niara

>>As I understand it should be working in the way I post<<

Both the msdn page and the help file you've quoted say the same thing - the WPARAM is a flag designating the type of image list and the LPARAM is the image list handle.

Yeah, what a mistake. Sorry and more thanks for the correction.
Niara