[PATCH v4 02/11] comctl32/tests: Test changing the selection styles after listbox creation

[Gabriel Ivăncescu]

Signed-off-by: Gabriel Ivăncescu 
---
 dlls/comctl32/tests/listbox.c | 55 +++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/dlls/comctl32/tests/listbox.c b/dlls/comctl32/tests/listbox.c
index d457b13..be42e6b 100644
--- a/dlls/comctl32/tests/listbox.c
+++ b/dlls/comctl32/tests/listbox.c
@@ -735,6 +735,60 @@ static void test_listbox_height(void)
     DestroyWindow( hList );
 }

+static void test_changing_selection_styles(void)
+{
+    static const DWORD styles[] =
+    {
+        0,
+        LBS_NODATA | LBS_OWNERDRAWFIXED
+    };
+    static const DWORD selstyles[] =
+    {
+        0,
+        LBS_MULTIPLESEL,
+        LBS_EXTENDEDSEL,
+        LBS_MULTIPLESEL | LBS_EXTENDEDSEL
+    };
+    HWND parent, listbox;
+    LONG ret, expected;
+    DWORD style;
+    UINT i, j;
+
+    parent = create_parent();
+    ok(parent != NULL, "Failed to create parent window.\n");
+    for (i = 0; i < ARRAY_SIZE(styles); i++)
+    {
+        for (j = 0; j < ARRAY_SIZE(selstyles); j++)
+        {
+            listbox = CreateWindowA(WC_LISTBOXA, "TestList", styles[i] | selstyles[j] | WS_CHILD | WS_VISIBLE,
+                                    0, 0, 100, 100, parent, (HMENU)ID_LISTBOX, NULL, 0);
+            ok(listbox != NULL, "%u: Failed to create ListBox window.\n", j);
+
+            style = GetWindowLongA(listbox, GWL_STYLE);
+            ok((style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) == selstyles[j], "%u: unexpected window styles %#x.\n", j, style);
+
+            if (selstyles[j] & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL))
+            {
+                style &= ~selstyles[j];
+                expected = 0;
+            }
+            else
+            {
+                style |= LBS_MULTIPLESEL | LBS_EXTENDEDSEL;
+                expected = LB_ERR;
+            }
+            SetWindowLongA(listbox, GWL_STYLE, style);
+            style = GetWindowLongA(listbox, GWL_STYLE);
+            ok(!(style & selstyles[j]), "%u: unexpected window styles %#x.\n", j, style);
+
+            ret = SendMessageA(listbox, LB_GETSELCOUNT, 0, 0);
+            ok(ret == expected, "%u: expected %d from LB_GETSELCOUNT, got %d\n", j, expected, ret);
+            DestroyWindow(listbox);
+        }
+    }
+    DestroyWindow(parent);
+}
+
 static void test_itemfrompoint(void)
 {
     /* WS_POPUP is required in order to have a more accurate size calculation (
@@ -2390,6 +2444,7 @@ START_TEST(listbox)
     test_LB_SELITEMRANGE();
     test_LB_SETCURSEL();
     test_listbox_height();
+    test_changing_selection_styles();
     test_itemfrompoint();
     test_listbox_item_data();
     test_listbox_LB_DIR();