[PATCH v2 3/7] comctl32: Implement OBJID_QUERYCLASSNAMEIDX for trackbar controls.

[Esme Povirk]

From: Esme Povirk

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

diff --git a/dlls/comctl32/tests/trackbar.c b/dlls/comctl32/tests/trackbar.c
index 86fb1ce1898..672c3882c47 100644
--- a/dlls/comctl32/tests/trackbar.c
+++ b/dlls/comctl32/tests/trackbar.c
@@ -547,10 +547,14 @@ static void test_trackbar_buddy(void)
     HWND hWndRightBuddy;
     HWND hWndCurrentBuddy;
     HWND rTest;
+    DWORD objid;

hWndTrackbar = create_trackbar(defaultstyle, hWndParent);
     ok(hWndTrackbar != NULL, "Expected non NULL value\n");

+    objid = SendMessageA(hWndTrackbar, WM_GETOBJECT, 0, OBJID_QUERYCLASSNAMEIDX);
+    ok(objid == 0x10012, "Unexpected objid %lu.\n", objid);
+
     flush_sequences(sequences, NUM_MSG_SEQUENCE);

hWndLeftBuddy = CreateWindowA(STATUSCLASSNAMEA, NULL, 0, 0, 0, 300, 20, NULL, NULL, NULL, NULL);
diff --git a/dlls/comctl32/trackbar.c b/dlls/comctl32/trackbar.c
index 461f3f3e437..2cc1f747e1f 100644
--- a/dlls/comctl32/trackbar.c
+++ b/dlls/comctl32/trackbar.c
@@ -2014,6 +2014,11 @@ TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     case WM_GETDLGCODE:
         return DLGC_WANTARROWS;

+    case WM_GETOBJECT:
+        if ((LONG)lParam == OBJID_QUERYCLASSNAMEIDX)
+            return 0x10012;
+        return DefWindowProcW (hwnd, uMsg, wParam, lParam);
+
     case WM_KEYDOWN:
         return TRACKBAR_KeyDown (infoPtr, (INT)wParam);