Function quick_header_window_proc

EverythingExt/quick_select.cpp:674–706

WNDPROC quick_header_window_proc_prev;
LRESULT CALLBACK quick_header_window_proc(
    _In_ HWND   hwnd,
    _In_ UINT   uMsg,
    _In_ WPARAM wParam,
    _In_ LPARAM lParam)
{
    switch (uMsg) {
    case HDM_LAYOUT: /* adjust the height of the header */ {
        QuickListData* data = (QuickListData*)GetPropW(GetParent(hwnd), quick_list_prop);
        if (!data) {
            DebugOStream() << L"quick_header prop is null\n";
            break;
        }
        if (!data->list_header) data->try_get_header();

        // doesn't work as expected
        //return SendMessageW(data->list_header, uMsg, wParam, lParam);

        LRESULT r = CallWindowProcW(quick_header_window_proc_prev, hwnd, uMsg, wParam, lParam);
        if (!data->list_header)  // real case
            return r;

        HDLAYOUT* layout = (HDLAYOUT*)lParam;
        RECT list_header;
        GetWindowRect(data->list_header, &list_header);
        if (int height = list_header.bottom - list_header.top)  // necessary
            layout->pwpos->cy = layout->prc->top = height;

        return r;
    }
    }
    return CallWindowProcW(quick_header_window_proc_prev, hwnd, uMsg, wParam, lParam);
}

WNDPROC quick_list_window_proc_prev;
LRESULT CALLBACK quick_list_window_proc(