 原文： 11.9. How do I get the size of a Canvas? After a re-size? $canvas->cget(-width); simply returns the size of the canvas when it was created, whereas $canvas->Width; will get the answer even after a re-size. Substitute [Hh]eight for [Ww]idth in the above if that is what you want. Nick Ing-Simmons points out that if you want to have your Canvas be able to grow to arbitrarily large sizes be sure to specify the -expand or -fill options when you ->pack the Canvas. 译文： 11.9. 怎样获取画布的大小？调整了大小之后呢？ $canvas -> cget(-width); 只返回画布组件在创建时的宽度，而 $canvas -> Width; 则能够获取调整以后的画布大小。假如您需要的是高度数值，只要把上面的[Ww]idth替换成[Hh]eight就能够了。 另外，Nick Ing-Simmons指出，假如您希望您的画布能够延伸到任意大小，那么必须在您使用->pack的时候指定-expand或-fill选项。 |
喜欢本文，那就收藏到： |
.text:''):(d.getSelection?d.getSelection():'');void(keyit=window.open('http://my.poco.cn/fav/storeIt.php?t='+escape(d.title)+'&u='+escape(d.location.href)+'&c='+escape(t)+'&img=http://www.h-strong.com/blog/logo.gif','keyit','scrollbars=no,width=475,height=575,status=no,resizable=yes'));keyit.focus(); "添加到POCO网摘"){kind=logo}
Rss Feed
