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如何在C#中清扫雷区或重新筛选
原标题:How to clear screen area or Redraw screen in C#
  • 时间:2010-01-15 08:14:15
  •  标签:
  • c#
  • gdi+

I am creating a User Control in C#.Net 2.0. I have to apply drag and Drop Images in between these controls. I have done drag and drop effect.

But the problem is that i have to show the control movement while mouse dragging. For that i am drawing a rectangle on screen with the help of ControlDraw.DrawReversibleFrame()

问题是,在利用移动活动时, 抽取整个屏幕,因为屏幕上没有再铺设。

因此,请任何人告诉我,如何清晰绘制图,或如何强迫重新筛选。

最佳回答

你们必须利用与以往一样的可逆框架来扭转这一局面,然后再在新职位上提出下一个框架。

The pseudo-code is:

bool prev_rev_frame = false;
Rect prev_rev_rect;

...

void on_mouse_move() {
  if(prev_rev_frame)
    Control.drawReversableFrame(prev_rev_rect);
  Rect new_rev_rect = ....
  Control.drawReversableFrame(new_rev_rect);
  prev_rev_frame = true;
  prev_rev_rect = new_rev_rect;
}

但总的来说,I recommend将 mo曲线改为rag-drop icon或图像的umb子更为合适。

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