Zhiyi Zhang : winecfg: Adjust top-level window rectangles after theme changes.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 957dfccb14a4ba73c8a9e2f8edfaa6d324c685b6
URL:    https://gitlab.winehq.org/wine/wine/-/commit/957dfccb14a4ba73c8a9e2f8edfaa6d...

Author: Zhiyi Zhang 
Date:   Thu Oct 20 22:47:41 2022 +0800

winecfg: Adjust top-level window rectangles after theme changes.

Manual tests show that calling EnableTheming() in uxtheme.dll doesn't update window sizes. So
it seems more appropriate to do it in winecfg.exe.

---

programs/winecfg/theme.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/programs/winecfg/theme.c b/programs/winecfg/theme.c
index d66d31837e6..621b471455f 100644
--- a/programs/winecfg/theme.c
+++ b/programs/winecfg/theme.c
@@ -1107,6 +1107,24 @@ static void update_mime_types(HWND hDlg)
     set_reg_key(config_key, keypath(L"FileOpenAssociations"), L"Enable", state);
 }

+static BOOL CALLBACK update_window_pos_proc(HWND hwnd, LPARAM lp)
+{
+    RECT rect;
+
+    GetClientRect(hwnd, &rect);
+    AdjustWindowRectEx(&rect, GetWindowLongW(hwnd, GWL_STYLE), !!GetMenu(hwnd),
+                       GetWindowLongW(hwnd, GWL_EXSTYLE));
+    SetWindowPos(hwnd, 0, 0, 0, rect.right - rect.left, rect.bottom - rect.top,
+                 SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOZORDER);
+    return TRUE;
+}
+
+/* Adjust the rectangle for top-level windows because the new non-client metrics may be different */
+static void update_window_pos(void)
+{
+    EnumWindows(update_window_pos_proc, 0);
+}
+
 INT_PTR CALLBACK
 ThemeDlgProc (HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
@@ -1261,6 +1279,7 @@ ThemeDlgProc (HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
                     read_shell_folder_link_targets();
                     update_shell_folder_listview(hDlg);
                     update_mime_types(hDlg);
+                    update_window_pos();
                     SetWindowLongPtrW(hDlg, DWLP_MSGRESULT, PSNRET_NOERROR);
                     break;
                 }