水平滚动触发两次

本文介绍了水平滚动触发两次的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

谁能告诉我为什么，在mfc应用程序中，OnHScroll会触发两次.我使用向导创建了一个应用程序，并将跟踪语句放入OnHSScroll事件中.当我单击滚动按钮时，它将触发两次.如果移动拇指轨道，我会理解多次发射. 我这样做的原因是我注意到它在我的应用程序中触发了两次，所以我创建了一个测试应用程序以查看是否做错了什么.开箱即用.那不正常.

Can anyone tell me why, in an mfc application would the OnHScroll fire twice. I created an app using the wizard and put a trace statement in the OnHSScroll event. It fires twice when I click the scroll button. I would understand multiple firings if I moved the thumbtrack. The reason why I did this is I was noticing it was firing twice in my application so I created a test application to see if I had done something wrong. It does it right out of the box. That can''t be normal. Any help would be appreciated.

推荐答案

TRACE(水平滚动触发\ n")； 认真地，将一个应用程序放入其中.单击水平滚动按钮.它会触发两次. TRACE ("Horizontal Scroll firing\n"); Seriously, take an application, put that code in it. Click on the horizontal scroll button. It fires twice.