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Unified Diff: base/win_util.cc

Issue 12434: Focus manager subclassing check (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: Created 12 years, 1 month ago
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Index: base/win_util.cc
===================================================================
--- base/win_util.cc (revision 5976)
+++ base/win_util.cc (working copy)
@@ -257,6 +257,12 @@
// installed.
static const wchar_t* const kHandlerKey = L"__ORIGINAL_MESSAGE_HANDLER__";
+bool IsSubclassed(HWND window, WNDPROC subclass_proc) {
+ WNDPROC original_handler =
+ reinterpret_cast<WNDPROC>(GetWindowLongPtr(window, GWLP_WNDPROC));
+ return original_handler == subclass_proc;
+}
+
bool Subclass(HWND window, WNDPROC subclass_proc) {
WNDPROC original_handler =
reinterpret_cast<WNDPROC>(GetWindowLongPtr(window, GWLP_WNDPROC));
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