Thread: I need to read a Listbox in another app

Please help I've been stuck on this for 6 months.

I am trying to read data from another application. I read the microsoft tutorial on msdn about FIndwindow and GetText. That does not work for a Listbox.

I then moved on to a hook, but my system locks up the minute I start hooking all the messages.

I know this is possible because I can see all the data using Spy++. If it can do it I should be able to do. If anyone can give me some assistance hear it would be greatly appreciated.

Best Regards,

Bonkey

Thanks. I just ran across a VB posting that was sending me down this same track. This looks like a much easier method than the one I was going for.

Thanks for the quick reply. I'm off to give it a shot.

Here is what I have so far. (just created a new app to test with).

Code:

void CReadlbView::OnDraw(CDC* pDC)
{
	CReadlbDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	HWND ChildWnd,Wnd;

	CWnd *pParentWnd = FindWindow( "Afx:400000:b:146e:6:35cf",NULL);
	if(pParentWnd)
		ChildWnd = FindWindowEx( pParentWnd->m_hWnd,NULL,"#32770",NULL);
	else
		pDC->TextOut(1,1,"Parent Window not found!");
	if( ChildWnd )
		Wnd = FindWindowEx( ChildWnd , NULL, "ListBox", NULL);

	CListBox myWnd;
	myWnd.FromHandle(Wnd);

//	pDC->TextOut(1,1,myWnd.SendMessage(LB_GETTEXT));
	pDC->TextOut(1,1,myWnd.GetCurSel());

}

However, the SendMessage fails because it fails the assert:

{ ASSERT(::IsWindow(m_hWnd)); return (int)::SendMessage(m_hWnd, LB_GETCURSEL, 0, 0); }