IntPtr和方法P / Invoke [英] IntPtr and method P/Invoke

问题描述

嗨！


我正在尝试使用P / Invoke和一个带IntPtr的方法我在哪里
应该放一个地址一个方法，本机方法将使用

与我沟通。如何将方法转换为IntPtr？


/ Christian

Hi!

I''m trying to use P/Invoke and a Method which takes an IntPtr where I am
supposed to put an address to a method which the native method will use
to communicate back to me. How do I convert a method to an IntPtr?

/ Christian

推荐答案

Christian


您是否在
http://msdn.microsoft.com/library/de...functions.asp?

HTH

Alex


" Christian Westerlund" < CH ****************** @ comhem.se>在留言中写道

news：ed ************** @ TK2MSFTNGP10.phx.gbl ...

Hi, Christian

Did you check sample at
http://msdn.microsoft.com/library/de...functions.asp?

HTH
Alex

"Christian Westerlund" <ch******************@comhem.se> wrote in message
news:ed**************@TK2MSFTNGP10.phx.gbl...

嗨！

我正在尝试使用P / Invoke和一个方法，它接受一个I​​ntPtr我应该把一个地址放到一个方法，本机方法将使用
进行通信对我来说。如何将方法转换为IntPtr？

/ Christian

Hi!

I''m trying to use P/Invoke and a Method which takes an IntPtr where I am
supposed to put an address to a method which the native method will use
to communicate back to me. How do I convert a method to an IntPtr?

/ Christian

嗨！


好​​吧，在那个样本和任何样本中，我看过P / Invoke

函数需要一个这样的委托对象：

public static extern int EnumWindows（ CallBack x，int y）;

然后它不是问题，你创建一个委托对象并发送它但是我

有一个更像这样的函数： br />
public static extern int EnumWindows（IntPtr callback，int y）


如果我发送一个委托对象作为第一个参数我得到一个错误，我

不知道如何将委托转换为IntPtr。


/ Christian


AlexS写道：

Hi!

Well, in that sample and as in any sample I have seen the P/Invoke
function takes a delegate object like this:
public static extern int EnumWindows(CallBack x, int y);
Then it is not a problem, you create a delegate object and send it but I
have a function that is more like this:
public static extern int EnumWindows(IntPtr callback, int y)

If I send a delegate object as the first parameter I get an error and I
have no idea how to convert a delegate to an IntPtr.

/Christian

AlexS wrote:

Christian

你有没有在
http://msdn.microsoft.com/library/de...functions.asp?

HTH
Alex

Christian Westerlund < CH ****************** @ comhem.se>在消息中写道
新闻：ed ************** @ TK2MSFTNGP10.phx.gbl ...

Hi, Christian

Did you check sample at
http://msdn.microsoft.com/library/de...functions.asp?

HTH
Alex

"Christian Westerlund" <ch******************@comhem.se> wrote in message
news:ed**************@TK2MSFTNGP10.phx.gbl...

嗨！

我正在尝试使用P / Invoke和一个方法，它接受一个I​​ntPtr我应该把一个地址放到一个方法，本机方法将使用
进行通信对我来说。如何将方法转换为IntPtr？

/ Christian

Hi!

I''m trying to use P/Invoke and a Method which takes an IntPtr where I am
supposed to put an address to a method which the native method will use
to communicate back to me. How do I convert a method to an IntPtr?

/ Christian

Christian


我不确定我理解你的问题。您可以在

样本中声明函数，而不是使用IntPtr，并测试它是否有效。


HTH

Alex


" Christian Westerlund" < CH ****************** @ comhem.se>在消息中写道

新闻：O9 ************** @ TK2MSFTNGP10.phx.gbl ...

Hi, Christian

I am not sure I understand your issue. You can declare function as in the
sample instead of with IntPtr and test if it works.

HTH
Alex

"Christian Westerlund" <ch******************@comhem.se> wrote in message
news:O9**************@TK2MSFTNGP10.phx.gbl...

嗨！

好吧，在那个示例和我看到的P / Invoke
函数的任何一个示例中都有一个这样的委托对象：
public static extern int EnumWindows（CallBack x，int y） ;
然后它不是问题，你创建一个委托对象并发送它但我有一个更像这样的函数：
public static extern int EnumWindows（IntPtr callback，int y ）

如果我发送一个委托对象作为第一个参数我得到一个错误，我不知道如何将委托转换为IntPtr。

/基督徒

AlexS写道：

Hi!

Well, in that sample and as in any sample I have seen the P/Invoke
function takes a delegate object like this:
public static extern int EnumWindows(CallBack x, int y);
Then it is not a problem, you create a delegate object and send it but I
have a function that is more like this:
public static extern int EnumWindows(IntPtr callback, int y)

If I send a delegate object as the first parameter I get an error and I
have no idea how to convert a delegate to an IntPtr.

/Christian

AlexS wrote:

基督徒

你有没有检查样品
http://msdn.microsoft.com/library/de...functions.asp?
HTH
Alex

" Christian Westerlund < CH ****************** @ comhem.se>在消息中写道
新闻：ed ************** @ TK2MSFTNGP10.phx.gbl ...

Hi, Christian

Did you check sample at
http://msdn.microsoft.com/library/de...functions.asp?
HTH
Alex

"Christian Westerlund" <ch******************@comhem.se> wrote in message
news:ed**************@TK2MSFTNGP10.phx.gbl...

嗨！

我正在尝试使用P / Invoke和一个方法，它接受一个I​​ntPtr我应该把一个地址放到一个方法，本机方法将使用
进行通信对我来说。如何将方法转换为IntPtr？

/ Christian

Hi!

I''m trying to use P/Invoke and a Method which takes an IntPtr where I am
supposed to put an address to a method which the native method will use
to communicate back to me. How do I convert a method to an IntPtr?

/ Christian

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