edit控件应用

发布于 2013-08-19 08:57:09 浏览：7659 订阅该版

30 个回答

grissiom 2013-08-19

这家伙很懒，什么也没写！

haitao52198 2013-08-19

这家伙很懒，什么也没写！

nongxiaoming 2013-08-19

rt-thread大师兄

haitao52198 2013-08-20

这家伙很懒，什么也没写！

>用set_text()设置文本，然后update就显示了

---

```
else if (e->key == RTGUIK_RETURN)
		{
			rtgui_widget_focus(edit);
			textdraw = rt_malloc(strlen(text->text)+4);
			memcpy(textdraw,text->text,strlen(text->text));
			memcpy(&textdraw[strlen(text->text)],"
",2);
			rtgui_edit_set_text(edit,textdraw);
			rtgui_edit_update(edit);
		}
```

我之前就是这么干的。
跟踪发现：

```
 for (i = edit->update.start.y; i <= edit->update.end.y; i++)
    {
        struct edit_line *line = rtgui_edit_get_line_by_index(edit, edit->upleft.y + i);

if (i > edit->upleft.y + edit->row_per_page) break;
        if (line == RT_NULL)
        {
            /* when use "RTGUIK_BACKSPACE" backspace forward,
             * the last line is blank, that only fill background. */
            r.x1 = rect.x1;
            r.x2 = rect.x1 + prev_len * edit->font_width;
            r.y1 = rect.y1 + i * edit->font_height;
            r.y2 = r.y1 + edit->font_height;
            if (r.x2 > rect.x2) r.x2 = rect.x2;
            if (r.y2 > rect.y2) r.y2 = rect.y2;
            rtgui_dc_fill_rect(dc, &r);
            break;
        }
```

edit->update.start.y这几个值有问题，暂时还没有找到问题 [s:182]