in function nsContainerFrame::SyncWindowProperties(nsPresContext* aPresContext, nsIFrame* aFrame, nsView* aView, nsRenderingContext* aRC)
Element* rootElement = aPresContext->Document()->GetRootElement(); if (!rootElement || !rootElement->IsXUL()) { // Scrollframes use native widgets which don't work well with // translucent windows, at least in Windows XP. So if the document // has a root scrollrame it's useless to try to make it transparent, // we'll just get something broken. // nsCSSFrameConstructor::ConstructRootFrame constructs root // scrollframes whenever the root element is not a XUL element, so // we test for that here. We can't just call // presShell->GetRootScrollFrame() since that might not have // been constructed yet. // We can change this to allow translucent toplevel HTML documents // (e.g. to do something like Dashboard widgets), once we // have broad support for translucent scrolled documents, but be // careful because apparently some Firefox extensions expect // openDialog("something.html") to produce an opaque window // even if the HTML doesn't have a background-color set. return; } I want to remove rootElement->IsXUL() check for supporting transparent root html window, is that OK? -- 此致 礼 罗勇刚 Yours sincerely, Yonggang Luo _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform