焦点问题在表格加载

问题描述

我有一个ActiveX控件（用VB 6.0或C ++编写），我们在C＃WinForms程序中用作AxInterop。它非常像一个文本框，但有一些特殊的逻辑等...我们已经将其添加到工具栏。

当表单加载时，我希望键盘焦点在这个控制中，所以我用 .Focus 和 .Select 方法，但仍然没有得到焦点。

当我从Visual Studio运行时，控件获得焦点。

在IDE中，控件没有得到重点。

这是为什么？

这里是一个截图它也是：

解决方案

$ b $是否确定组件是可见的？ b

如果您尝试在事件处理程序，请尝试将其移动到处理程序，或者。

行为上的差异可能归结为时间问题。
查看的事件顺序发生在一个开放的形式更多的想法。

I have an ActiveX control (written in VB 6.0 or C++ maybe) that we are using as an AxInterop in a C# WinForms program. It is very much like a text box but with some special logic etc... and we have added it to a toolbar.

When the form loads I want the keyboard focus to be inside this control, so I used .Focus and .Select methods on it but still it does NOT get the focus.

When I run from Visual Studio, the control gets the focus.

When I run outside of the IDE, the control does not get the focus.

Why is this?

Here is an screen shot of it too:

解决方案

Are you sure the component is visible when you try to give it focus?

If you are trying to do the focussing in a Form.Load event handler, try moving it to the Form.Shown handler instead, or perhaps Control.Enter.

The difference in behaviour could be down to a timing issue.Have a look on MSDN for the order in which events occur on an opening form for more ideas.

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