PDF Viewer托管表单在关闭后具有控制权 [英] PDF Viewer hosting forms hugging control after closing

问题描述

我的许多C#和VB程序都使用PDFViewer控件和AxAcroPDFlib.多年来一直为我提供服务，但是最近，在安装Adobe Reader DC之后，所有使用PDFViewer的应用程序都开始出现问题.

A bunch of my C# and VB programs utilize PDFViewer control and AxAcroPDFlib. It's been serving me well for years but recently, after installing Adobe Reader DC, all applications using PDFViewer started to have problems.

PDFViewer真正快速地控制打开的PDF文档.但是，当我关闭带有打开的PDF文档的托管PDFViewer控件的表单时，该表单需要5到10秒钟的时间才能将控件返回到同一程序中的其他表单.其他形式只是保持禁用状态，沙漏形鼠标指针的作用时间较长.读卡器DC是否应使用新的AxAcroPDFlib?

PDFViewer controls open PDF documents really fast, instantly. However, when I go to close the form hosting PDFViewer control with open PDF document, the form takes anywhere between 5-10 seconds to return control to other form in the same program. Other forms just remain disabled, with hourglass mouse pointer for an extended time. Is there new AxAcroPDFlib that should be used with Reader DC?

推荐答案

我能够找到问题所在的实际PDFViewer控件.当安装Adobe Reader DC时，并且如果PDFViewer控件具有Focus，则该表单将无法关闭.我添加了FormClosing事件处理程序，并添加了一些代码以将Focus分配给除PDFViewer之外的其他控件，然后我还处置了PDFViewer实例.像魅力一样工作.

I was able to track down the issue to the actual PDFViewer control. When Adobe Reader DC is installed, and if PDFViewer control has Focus, the form will have trouble closing. I added FormClosing event handler and added some code to assign Focus to a control other than PDFViewer and then I also disposed of PDFViewer instance. Worked like a charm.

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