Hello, c++ programmer here that has never really had the need for the win api stuff. I have used it here and there but never got a good book on the subject and dont have that option for this project I'm working on plus its just a simple change really. That being said, I'm sorry that I dont have much of a clue here, and I do know how that can be frustrating. However my goal is relatively simple to explain and I would "think" not to hard to write, yet I can't figure it out. I'm working with a DLL interfacing winamp. I have access to the win api and have not included any sort of sdk. So I'm stuck hunting for the functions I need to make it work. What I do know.. I have the window name that I need. I can use SetFocus and it works fine. However with in this window I have a list box, or at least I think that's what it is. Here is a screen shot of two views its has http://sourceforge.net/dbimage.php?id=5078 I use spy++ to get the name of the list box and its called "SysListView32". and the nIDDlgItem is labeled "IDC_ALBUMLIST" ( I know this from the code ) . What I want to do. Simple really. The list box has a highlight and a cursor. The highlight follows what is clicked on and the cursor is whats playing( being used ). I want to tell the highlight to move the the cursor at the given point I tell it to. The reason I want this, is when a song plays the highlight stays behind. At a glance it looks like the wrong album is playing. This application is in a car, so its imperative that the highlight is what is playing. I have tried all kinds of things like: SetDlgItemTextA( FindWindow("SysListView32",NULL),IDC_ALBUMLIST, "test1"); or CDialog(IDC_ALBUMLIST).ShowWindow(0); or SendDlgItemMessage( FindWindow("SysListView32",NULL) ,IDC_ALBUMLIST, LB_SETCURSEL, 2, 0 ); etc.. but nothing changes it. So any help targeting this listbox and make a change would be helpful. I know this is not really game dev, but I like the people here and I cant find a better forum. Hope someone can help here,Thx.

Quote:Original post by jwezorek
It's not a ListBox: it's a ListView. Get an HWND to it and then call the macro ListView_SetItemState(), see here.

Ah no wonder I was having problems.

Ok I think I have it figure out but still dont see it change, can anyone spot a problem here?

LV_ITEM     lvi;lvi.state=0; // also tried 1 lvi.stateMask=LVIS_SELECTED;WPARAM ItemIndex=(WPARAM)2;::SendMessage(hwnd_albumlist_LV,LVM_SETITEMSTATE,ItemIndex,(LPARAM)&lvi);

[Edited by - ulao on March 2, 2010 11:30:45 AM]

Quote:Original post by Amr0
Assuming hwnd_albumlist_LV is indeed the window handle of the list view control, try:

ListView_SetItemState( hwnd_albumlist_LV, itemIndex, 0xFFFFFFFF, LVIS_SELECTED );InvalidateRect( hwnd_albumlist_LV, NULL, TRUE );UpdateWindow( hwnd_albumlist_LV ); 

according to spy++
I have a main window "Winamp Gen" (I used a HWND of hwnd_albumlist)
and
a LV inside it "SysListView32" (I used a HWND of hwnd_albumlist_LV)
I can set focus to the hwnd_albumlist, but not able to do anything with hwnd_albumlist_LV yet

I tied both with the code you offered and see no results. The frame work also has a wndWinampAL and I can see there are window functions available.

( i.e : wndWinampAL.SendMessageA ) or wndWinampAL.GetSafeHwnd().

::SetFocus( hwnd_albumlist ) ; works
::SetFocus( wndWinampAL ) ; works
::SetFocus( wndWinampAL.GetSafeHwnd()) ; does not work

but for now I'm using

HWND hwnd_albumlist = FindWindow("Winamp Gen",NULL);
HWND hwnd_albumlist_LV = FindWindow("SysListView32",NULL);

Can you think of any simple change I could test with, like set focus. My guess is I just cant get to the LV in the window. Thank you both for your help!

I think my problem is how a window is constructed.

if I ::ShowWindow( hwnd_albumlist, SW_HIDE ); Sure as can be that window will hide. but Do I want the window? I though I needed to get the List View in that window.

like

HWND hwnd_albumlist_LV = FindWindow("SysListView32",NULL);

or

HWND hwnd_albumlist_LV_chd = FindWindowEx(hwnd_albumlist,0,"SysListView32",NULL);

but once I have the HWND how do I know I have it? What could I possibly do to a LV to make it dance for me? So far I have not been able to make it talk.

Do to the information given in this form I was able to do it via the album list api.

one of my biggest pet-peeve is broken unfinished threads. Not that anyone would want to know this.. but here ya go..

m_wndList.SetCurSel(indx);

wndList is a class that extends HWND, and there is a built in function called SetCurSel. so that is all it took really, just needed to do a lot of search to find this function. Thx for the help guys. Because of that I knew what to look for ( i.e list_view and what not ).