linux 下的GTK+圖形編程問題！

xiafeng

GTK＋圖形編程中怎么刷新圖形？有沒有專門的刷新函數(shù)？

kys2002

我也正在郁悶中

xiafeng

難道是同路人？
有情況站內(nèi)聯(lián)系哈
兩個(gè)人總比一個(gè)人強(qiáng)～

dzho002

摘自gtk+-2.0文檔

gtk_widget_queue_draw_area ()
void        gtk_widget_queue_draw_area      (GtkWidget *widget,
                                             gint x,
                                             gint y,
                                             gint width,
                                             gint height);


Invalidates the rectangular area of widget defined by x, y, width and height by calling gdk_window_invalidate_rect() on the widget's window and all its child windows. Once the main loop becomes idle (after the current batch of events has been processed, roughly), the window will receive expose events for the union of all regions that have been invalidated.

Normally you would only use this function in widget implementations. You might also use it, or gdk_window_invalidate_rect() directly, to schedule a redraw of a GtkDrawingArea or some portion thereof.

Frequently you can just call gdk_window_invalidate_rect() or gdk_window_invalidate_region() instead of this function. Those functions will invalidate only a single window, instead of the widget and all its children.

The advantage of adding to the invalidated region compared to simply drawing immediately is efficiency; using an invalid region ensures that you only have to redraw one time.

惠繪洋

會(huì)有教程在 http://www.gtk.org.