掌上电脑/ Windows Mobile的：如何检测智能最小化 [英] Pocket PC/Windows Mobile: How to detect smart minimize

问题描述

我如何检测什么时候我Compact Framework的应用程序正在智能最小化（智能最小化是当用户点击在Pocket PC上的右上角的X按钮，会发生什么）？

How do I detect when my Compact Framework application is being smart-minimized (smart minimize is what happens when the user clicks the "X" button in the top-right corner on a Pocket PC)?

在停用事件是不正确的做法，因为它发生的情况下比其他的最小化，比如当一个消息框或者其他的形式显示在主窗体的顶部。而形式的的WindowState没有帮助，因为没有对.NET CF没有最小化的WindowState。

The Deactivate event isn't the right way because it occurs in circumstances other than minimization, such as when a message box or another form is shown on top of the main form. And the form's WindowState doesn't help because there is no "Minimized" WindowState on .NET CF.

我听说通过设置MinimizeBox =假，我的应用程序将被关闭，而不是最小化。但其实我不希望我的应用程序关闭，我只是想知道什么时候已经被最小化。

I heard that by setting MinimizeBox = false, my app will be closed instead of minimized. But I actually don't want my app to close, I just want to know when it has been minimized.

推荐答案

我觉得要走的路在这里正在处理的 WM_ACTIVE 的消息，然后检查是否fMinimized参数不为零。你可以找到如何在在这里宣布在code此消息的更多信息。

I think the way to go here is processing the WM_ACTIVE message and then checking if the fMinimized parameter is not zero. You can find more information on how to declare this messages in your code in here.

我会尝试找出如何准确code在C＃和证明的假设。但是你比我也许更快，看着办吧。

I will try figure out how to exactly code this in C# and prove the hypothesis. However you maybe faster than me and figure it out.

另外，还要检查功能给DefWindowProc 和的 WindowProc中，该用于处理的消息。功能在您的code这样的声明：

Also check the functions DefWindowProc and WindowProc, which are used to process the messages. Functions are declared in your code like this:

首先有包括：

using System.Runtime.InteropServices;

然后在类中声明是这样

then in the class declare like this

[DllImport("coredll.dll")]
static extern IntPtr DefWindowProc(IntPtr hWnd, uint uMsg, UIntPtr wParam,
   IntPtr lParam);

---

还有一件事你可以做的，这更多的是一种哲学的解决方法。 INMO的智能最小化X的困惑对于用户来说，这就是为什么我不喜欢把它列入。相反，我提供在该使用形式的close方法的形式，上面写着关闭或回，的右下角的按钮。我用它在各种形式保持一个标准。这是更加明确的Windows用户，因为他们可能会认为，在Windows Mobile的X是在窗口PC相同的X。

---

There is another thing you could do, this is more a "philosophical" workaround. INMO the smart minimize X is confusing for users, that is why I don't like to include it. Instead I provide a button at the right lower corner of the form that says "close" or "back", which uses the close method of the form. I used it in all forms to keep a standard. This is less ambiguous for windows users because they may assume that the X in windows mobile is the same X in windows for PC.

如果由于某种原因，你需要尽量减少您的应用程序或将其发送到后台使用下面的code：

If for some reason you need to minimize your app or send it to the background use the following code:

using System.Runtime.InteropServices;
...

public partial class Main : Form
{
   public Main()
    {


        InitializeComponent();
    }

  [DllImport("coredll.dll")]
    static extern int ShowWindow(IntPtr hWnd, int nCmdShow);

  const int SW_MINIMIZED = 6;

  ...
  ...

   public void HideForm()
    {
        ShowWindow(this.Handle, SW_MINIMIZED);
    }
} 

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