0

我正在尝试在Objective C中实现一个C库(libcs​​s)。我在函数css_stylesheet_create()上得到一个“函数调用的参数太多,预计有4个,有13个”

    code = css_stylesheet_create(CSS_LEVEL_DEFAULT, "UTF-8", "", NULL,
                             false, false, myrealloc, 0, resolve_url, 0, NULL, NULL,
                             &sheet);

css_stylesheet_create 定义:

   /** 
    *  Parameter block for css_stylesheet_create() 
    */ 

    typedef struct css_stylesheet_params {
            /** ABI version of this structure */
            uint32_t params_version;


            /** The language level of the stylesheet */
            css_language_level level;
            /** The charset of the stylesheet data, or NULL to detect */
            const char *charset;
            /** URL of stylesheet */
            const char *url;
            /** Title of stylesheet */
            const char *title;

            /** Permit quirky parsing of stylesheet */
            bool allow_quirks;
            /** This stylesheet is an inline style */
            bool inline_style;

            /** URL resolution function */
            css_url_resolution_fn resolve;
            /** Client private data for resolve */
            void *resolve_pw;

            /** Import notification function */
            css_import_notification_fn import;
            /** Client private data for import */
            void *import_pw;

            /** Colour resolution function */
            css_color_resolution_fn color;
            /** Client private data for color */
            void *color_pw;

            /** Font resolution function */
            css_font_resolution_fn font;
            /** Client private data for font */
            void *font_pw;
   } css_stylesheet_params;

css_error css_stylesheet_create(const css_stylesheet_params *params,
        css_allocator_fn alloc, void *alloc_pw,
        css_stylesheet **stylesheet);
4

2 回答 2

3

原型要求 4 个参数,调用有 13 个参数!

检查这个 补丁。他们正在css_stylesheet_create完全改变功能。即他们将所有参数嵌入其中,css_stylesheet_params从而将参数数量css_stylesheet_create从 13 减少到 4

所以你需要像这样打电话 -

css_stylesheet_params params;

params.level = CSS_LEVEL_DEFAULT;
params.charset = "UTF-8";
params.url = "";
params.title = NULL;
params.allow_quirks = false;
params.inline_style = false;
params.resolve = resolve_url;
params.resolve_pw = NULL;
params.import = NULL;
params.import_pw = NULL;
params.color = NULL;
params.color_pw = NULL;

css_stylesheet_create(&params, myrealloc, NULL, &sheet)
于 2012-04-12T13:31:37.247 回答
1

是的,检查一下,在你的函数声明中,你只给出了 4 个参数,但是你用超过 4 个参数调用函数

 css_error css_stylesheet_create(const css_stylesheet_params *params,  
       css_allocator_fn alloc, void *alloc_pw,
         css_stylesheet **stylesheet);
于 2012-04-12T13:33:23.070 回答