使用DLL编译在Delphi 7中的C＃ [英] Use DLL compiled in Delphi 7 in C#

问题描述

我需要在我的C＃应用​​程序中使用Delphi 7中的一个DLL（硬件ID提取器）。

此DLL导出的函数是：

导出功能：

  // CPU 
函数GetCPUSpeed：Double; 
功能CPUFamily：ShortString; {从Windows注册表获取cpu标识符} 
函数GetCpuTheoreticSpeed：Integer; {Get cpu speed（in MHz）} 
 function IsCPUIDAvailable：Boolean;寄存器; 
函数GetCPUID（CpuCore：byte）：ShortString; 
函数GetCPUVendor：ShortString; 
 
 // RAM 
函数MemoryStatus（MemType：Integer）：cardinal; {in Bytes} 
 function MemoryStatus_MB（MemType：Integer）：ShortString; {in MB} 
 
 // HDD 
函数GetPartitionID（分区：PChar）：ShortString; {获取指定的标记的ID。参数示例：'C：'} 
函数GetIDESerialNumber（DriveNumber：Byte）：PChar; {DriveNr从0到4} 
  

---

我知道（显然）Delphi中的字符串不是空终止的，是byte（ASCII）。但是我不知道如何将这些Delphi字符串映射到C＃。

谢谢。

解决方案

以下是C＃中如何声明GetCPUSpeed函数的示例：

  class Program 
 {
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern double GetCPUSpeed（）; 
 
 static void Main（string [] args）
 {
 double cpuSpeed = GetCPUSpeed（）; 
 Console.WriteLine（CPU speed：{0}，cpuSpeed）; 
} 
} 
  

还有其他声明可以尝试： / p>

  [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern string CPUFamily（）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern int GetCpuTheoreticSpeed（）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern bool IsCPUIDAvailable（）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern string GetCPUID（byte cpuCore）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern string GetCPUVendor（）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern uint MemoryStatus（int memType）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern string MemoryStatus_MB（int memType）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern string GetPartitionID（char partition）; 
 
 [DllImport（the_name_of_the_delphi_library.dll）] 
 public static extern string GetIDESerialNumber（byte driveNumber）; 
  

I need to use a DLL (Hardware ID Extractor) made in Delphi 7 in my C# application.

The functions exported by this DLL are:

Exported functions:

// CPU
function GetCPUSpeed: Double;
function CPUFamily: ShortString; { Get cpu identifier from the windows registry }
function GetCpuTheoreticSpeed: Integer; { Get cpu speed (in MHz) }
function IsCPUIDAvailable: Boolean; Register;
function GetCPUID (CpuCore: byte): ShortString;
Function GetCPUVendor: ShortString;

// RAM
function MemoryStatus (MemType: Integer): cardinal; { in Bytes }
function MemoryStatus_MB (MemType: Integer): ShortString; { in MB }

// HDD
function GetPartitionID (Partition : PChar): ShortString; { Get the ID of the specified patition. Example of parameter: 'C:' }
function GetIDESerialNumber(DriveNumber: Byte ): PChar; { DriveNr is from 0 to 4 }

---

I know (obviously) that string in Delphi are not null terminated and are byte (ASCII). But I have no clue on how to map these Delphi string to C#.

Thanks.

解决方案

Here's an example of how you could declare the GetCPUSpeed function in C#:

class Program
{
    [DllImport("the_name_of_the_delphi_library.dll")]
    public static extern double GetCPUSpeed();

    static void Main(string[] args)
    {
        double cpuSpeed = GetCPUSpeed();
        Console.WriteLine("CPU speed: {0}", cpuSpeed);
    }
}

And there are the other declarations you could try:

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern string CPUFamily();

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern int GetCpuTheoreticSpeed();

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern bool IsCPUIDAvailable();

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern string GetCPUID(byte cpuCore);

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern string GetCPUVendor();

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern uint MemoryStatus(int memType);

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern string MemoryStatus_MB(int memType);

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern string GetPartitionID(char partition);

[DllImport("the_name_of_the_delphi_library.dll")]
public static extern string GetIDESerialNumber(byte driveNumber);

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