通过将图像加载为背景来设置面板滚动 [英] set the panel scrolled by loading an image as background

问题描述

我有一张很大的图片.我希望用户将其作为背景加载到面板中，并且希望用户加载图片时面板的滚动条出现.
换句话说，我希望有一个可滚动的面板，以便当用户将大于面板尺寸的picture_加载为背景时，滚动条会消失.
解决方案是什么?
在此先感谢
已更新:
我应该补充一点，我想允许用户在该面板上绘制，因此必须多次调用 myPanel.invalidate .我认为当我调用 invalidate 时，该面板是从顶部再次淹死.

Hi,I have a picture which is so big.I want the user to load it in a panel as background and I want the scollbars of the panel apear when the user loads the picture.
In other words, I want to have a scrollable panel so that when the user loades a picture_which is bigger than the panel size_ as background, the scrollbar apears.
what''s the solution?
Thanks in advance
Updated:
I should add that I want to allow the user to draw on that panel so I have to call myPanel.invalidate many times .I think when I call invalidate, The panel is drown again from the top of it.

推荐答案

尝试此
http://stackoverflow.com/questions/4305011/c-sharp- panel-for-drawing-graphics-and-scrolling [ ^ ]

http://www.dreamincode.net/forums/topic/149251 -create-image-scroller-for-windows-application/ [

try this
http://stackoverflow.com/questions/4305011/c-sharp-panel-for-drawing-graphics-and-scrolling[^]

http://www.dreamincode.net/forums/topic/149251-create-image-scroller-for-windows-application/[^]

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