[PATCH 1/4] comctl32: Implement OBJID_QUERYCLASSNAMEIDX for list boxes.

[Esme Povirk]

From: Esme Povirk

---
 dlls/comctl32/listbox.c       | 5 +++++
 dlls/comctl32/tests/listbox.c | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c
index 0ae511f7d70..3d55fc2ad83 100644
--- a/dlls/comctl32/listbox.c
+++ b/dlls/comctl32/listbox.c
@@ -2991,6 +2991,11 @@ static LRESULT CALLBACK LISTBOX_WindowProc( HWND hwnd, UINT msg, WPARAM wParam,
     case WM_NCPAINT:
         return LISTBOX_NCPaint( descr, (HRGN)wParam );

+    case WM_GETOBJECT:
+        if ((LONG)lParam == OBJID_QUERYCLASSNAMEIDX)
+            return 0x10000;
+        break;
+
     case WM_SIZE:
         LISTBOX_UpdateSize( descr );
         return 0;
diff --git a/dlls/comctl32/tests/listbox.c b/dlls/comctl32/tests/listbox.c
index 4012811473c..f507ba108f8 100644
--- a/dlls/comctl32/tests/listbox.c
+++ b/dlls/comctl32/tests/listbox.c
@@ -372,6 +372,7 @@ static void test_item_height(void)
     HFONT font;
     HWND hLB;
     HDC hdc;
+    DWORD idx;

hLB = create_listbox (0, 0);
     ok ((hdc = GetDCEx( hLB, 0, DCX_CACHE )) != 0, "Can't get hdc\n");
@@ -379,6 +380,9 @@ static void test_item_height(void)
     ok (GetTextMetricsA( hdc, &tm ), "Can't read font metrics\n");
     ReleaseDC( hLB, hdc);

+    idx = SendMessageA(hLB, WM_GETOBJECT, 0, OBJID_QUERYCLASSNAMEIDX);
+    ok(idx == 0x10000, "Got index 0x%08lx\n", idx);
+
     ok (SendMessageA(hLB, WM_SETFONT, (WPARAM)font, 0) == 0, "Can't set font\n");

itemHeight = SendMessageA(hLB, LB_GETITEMHEIGHT, 0, 0);