How to get the color of a window's frame?

Question

I'm trying to read the color of a window's border (frame) of a regular window.

It seems that window->palette().color(QPalette::XXXX) would do it, but what's XXXX? or is it not possible with palette? If so, how?

Answer 1

You need to use it the native GetSysColorBrush function:

QColor getWindowFrameColor() {
    // This is the only way to detect that a given color is supported
    HBRUSH brush = GetSysColorBrush(COLOR_ACTIVEBORDER);
    if (brush) {
        DWORD color = GetSysColor(COLOR_ACTIVEBORDER);
        return QColor(GetRValue(color), GetGValue(color), GetBValue(color));
        // calling DeleteObject(brush) is unnecessary, but would be harmless
    }
    return QColor();
}

I've searched the Qt sources for COLOR_ACTIVEBORDER, and the only other way to retrieve it would be by running some custom javascript code on WebKit.