如何将const char *转换为C# [英] How to convert const char* to c#

问题描述

我正在使用c ++ dll文件来执行某些功能，
我无法使用此功能:

Hi,
I''m using a c++ dll file in order to execute some functions,
I''m blocked in this function :

BOOL CLIENT_CapturePicture(
  LONG       hPlayHandle,
  const char *pchPicFileName
);

我正在尝试此代码，但它不起作用:

I''m trying this code but it''s not working :

[DllImport("dhnetsdk.dll", CharSet = CharSet.Ansi)]
public static extern bool CLIENT_CapturePicture
    (long hPlayHandle,
    [MarshalAs(UnmanagedType.LPStr)]
    string pchPicFileName);

请帮帮我:)& thx

Please Help me :) &thx

推荐答案

好，我找到了解决方案，将c ++代码中的

OK, I find the solution, it''s to consider

long

视为

int

在C#中，谢谢:-O

in c#, Thanks :-O

我认为您需要

I think you need the Marshal.StringToHGlobalAnsi Method.
:)

它可以正常工作，但不能正确地检查字符串参数

It work, but not correctly, the string parameter

string pchPicFileNam

，我得到的输出文件的名称类似于€mÕ":confused :, Are还有其他建议

is not examined correctly, I get an output file that have a name like "€mÕ":confused:, Are there other suggestion please

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