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fixed drawing point issue when this point is out of buffer dc.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1719 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
2011-09-21 10:18:09 +00:00
parent a397fef958
commit c2badd8983
1 changed files with 3 additions and 0 deletions
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components/rtgui/common/dc_buffer.c
+3
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@@ -134,6 +134,9 @@ static void rtgui_dc_buffer_draw_point(struct rtgui_dc* self, int x, int y)
dc = (struct rtgui_dc_buffer*)self;
/* does not draw point out of dc */
if ((x > dc->width) || (y > dc->height)) return ;
/* note: there is no parameter check in this function */
ptr = (rtgui_color_t*)(dc->pixel + y * dc->pitch + x * sizeof(rtgui_color_t));