void onDispose(long /*int*/ embedHandle) {
if (SubclassProc == null) return;
long /*int*/ hwndChild = OS.GetWindow(browser.handle, OS.GW_CHILD);
OS.SetWindowLongPtr(hwndChild, OS.GWL_WNDPROC, MozillaProc);
childWindows = null;
browser = null;
}
void addWindowSubclass() {
long /*int*/ hwndChild = OS.GetWindow(browser.handle, OS.GW_CHILD);
if (SubclassProc == null) {
SubclassProc = new Callback(MozillaDelegate.class, "windowProc", 4); // $NON-NLS-1$
MozillaProc = OS.GetWindowLongPtr(hwndChild, OS.GWL_WNDPROC);
}
OS.SetWindowLongPtr(hwndChild, OS.GWL_WNDPROC, SubclassProc.getAddress());
}
void removeWindowSubclass() {
long /*int*/ hwndChild = OS.GetWindow(browser.handle, OS.GW_CHILD);
if (SubclassProc != null) {
OS.SetWindowLongPtr(hwndChild, OS.GWL_WNDPROC, MozillaProc);
}
}