tor-browser

commit dd4460727998a53e9fa7372afba2a93a9546cec3
parent 1d93d8f2aefe636d33f04b1664b032bf0f7af726
Author: Emilio Cobos Álvarez <emilio@crisal.io>
Date:   Fri, 28 Nov 2025 15:06:26 +0000

Bug 2002986 - Use IAppWindowTitlebar::ResetToDefault() for non-collapsed titlebar. r=win-reviewers,gstoll

This seems to actually go to the default DWM stuff and is the documented
way of doing so:

https://learn.microsoft.com/en-us/windows/apps/develop/title-bar#reset-the-title-bar

Differential Revision: https://phabricator.services.mozilla.com/D274413

Diffstat:
M
widget/windows/WindowsUIUtils.cpp
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/widget/windows/WindowsUIUtils.cpp b/widget/windows/WindowsUIUtils.cpp
@@ -1394,7 +1394,11 @@ void WindowsUIUtils::SetIsTitlebarCollapsed(HWND aWnd, bool aIsCollapsed) {
     MOZ_ASSERT_UNREACHABLE("IAppWindowTitleBar could not be acquired");
     return;
   }
-  hr = titleBar->put_ExtendsContentIntoTitleBar(aIsCollapsed);
+  if (aIsCollapsed) {
+    hr = titleBar->put_ExtendsContentIntoTitleBar(aIsCollapsed);
+  } else {
+    hr = titleBar->ResetToDefault();
+  }
   if (FAILED(hr)) {
     MOZ_LOG(gWindowsLog, LogLevel::Error,
             ("Skipping SetIsTitlebarCollapsed() because "