[PATCH 1/2] user32/tests: Test clicking taskbar icons of minimized windows.

[Zhiyi Zhang]

When a minimized window doesn't handle WM_SYSCOMMAND SC_RESTORE messages, the window should remain
minimized when its taskbar icon gets clicked.

Signed-off-by: Zhiyi Zhang <zzhang at codeweavers.com>
---
 dlls/user32/tests/msg.c | 77 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/dlls/user32/tests/msg.c b/dlls/user32/tests/msg.c
index f0e0d0fba76..3c4cb084d8e 100644
--- a/dlls/user32/tests/msg.c
+++ b/dlls/user32/tests/msg.c
@@ -18735,6 +18735,82 @@ static void test_button_style(void)
     }
 }
 
+static BOOL sc_restore_received;
+
+static LRESULT CALLBACK test_taskbar_msg_proc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
+{
+    if (msg == WM_SYSCOMMAND && wp == SC_RESTORE)
+    {
+        sc_restore_received = TRUE;
+        return 0;
+    }
+
+    return DefWindowProcA(hwnd, msg, wp, lp);
+}
+
+static void test_taskbar_messages(void)
+{
+    HWND hwnd, background;
+    int timeout = 0;
+    COLORREF color;
+    WNDCLASSA cls;
+    HDC hdc;
+
+    if (!winetest_interactive)
+        return;
+
+    memset(&cls, 0, sizeof(cls));
+    cls.lpfnWndProc = DefWindowProcA;
+    cls.hInstance = GetModuleHandleA(NULL);
+    cls.hCursor = LoadCursorA(NULL, (LPSTR)IDC_ARROW);
+    cls.hbrBackground = GetStockObject(WHITE_BRUSH);
+    cls.lpszClassName = "test_taskbar_background_class";
+    RegisterClassA(&cls);
+
+    cls.lpfnWndProc = test_taskbar_msg_proc;
+    cls.hbrBackground = GetStockObject(GRAY_BRUSH);
+    cls.lpszClassName = "test_taskbar_class";
+    RegisterClassA(&cls);
+
+    background = CreateWindowA("test_taskbar_background_class", "background", WS_POPUP | WS_VISIBLE,
+                               100, 100, 200, 200, NULL, NULL, NULL, NULL);
+    ok(background != NULL, "CreateWindowA failed, error %d.\n", GetLastError());
+    hwnd = CreateWindowA("test_taskbar_class", "test", WS_POPUP, 100, 100, 200, 200, NULL, NULL, NULL,
+                         NULL);
+    ok(hwnd != NULL, "CreateWindowA failed, error %d.\n", GetLastError());
+    ShowWindow(hwnd, SW_SHOWMINIMIZED);
+    flush_events();
+
+    trace("Click the taskbar icon of the test window within 5 seconds.\n");
+    while (!sc_restore_received && timeout < 5000)
+    {
+        flush_events();
+        timeout += 200;
+    }
+    ok(timeout < 5000 && sc_restore_received, "Didn't receive clicks on the taskbar icon.\n");
+
+    /* Desktop pixels may take a while to update */
+    timeout = 0;
+    hdc = GetDC(0);
+    color = GetPixel(hdc, 150, 150);
+    while (color != 0xffffff && timeout < 1000)
+    {
+        flush_events();
+        timeout += 200;
+        color = GetPixel(hdc, 150, 150);
+    }
+    /* The background window rectangle is (100, 100, 200, 200). If hwnd gets unminimized, it will
+     * end up obscuring the background window. */
+    todo_wine_if(color != 0xffffff)
+    ok(color == 0xffffff, "Expected color %#x, got %#x.\n", 0xffffff, color);
+
+    ReleaseDC(0, hdc);
+    DestroyWindow(hwnd);
+    DestroyWindow(background);
+    UnregisterClassA("test_taskbar_class", GetModuleHandleA(NULL));
+    UnregisterClassA("test_taskbar_background_class", GetModuleHandleA(NULL));
+}
+
 START_TEST(msg)
 {
     char **test_argv;
@@ -18860,6 +18936,7 @@ START_TEST(msg)
     test_TrackPopupMenu();
     test_TrackPopupMenuEmpty();
     test_DoubleSetCapture();
+    test_taskbar_messages();
     /* keep it the last test, under Windows it tends to break the tests
      * which rely on active/foreground windows being correct.
      */
-- 
2.32.0