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                ThinkChat2.0新版上線,更智能更精彩,支持會話、畫圖、視頻、閱讀、搜索等,送10W Token,即刻開啟你的AI之旅 廣告
                ## 3.1何時可以畫圖 什么時候可以畫圖,只有在幾個地方可以執行畫圖代碼。在其他地方調用該函數會出現未定義該行為的錯誤: 1. 最常出現的地方是在虛擬函數Fl_Widget::draw()中。你的類需要繼承一個Fl_Widget類,然后在自己的類中寫draw()函數。 2. 在寫boxtype和labeltype函數中用到。 3. 你可以調用Fl_Window::make_current()來增加控件的更新。用Fl_Widget::window()找到要更新的窗口
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