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如何运行.dll程序？

发布于 2024-08-06 15:00:00 字数 137 浏览 8 评论 0原文

我想使用 BASIC 语言使用 Run("someProgram.exe") 命令。这将打开第三个应用程序。

如果该程序使用 .dll（不确定是否可能）而不是 .exe 运行，我该如何编码？

提前致谢。

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唱一曲作罢 2024-08-13 15:00:00

如果要从命令行执行 DLL 函数，请使用： Rundll.exe

请注意您导出的函数需要与 (C) 签名完全匹配：

void CALLBACK EntryPointW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow);

如果不匹配，则未定义将发生什么，但您可能会崩溃。从 VB 类中的 dll 调用任意函数的正常例程是使用声明声明。您必须知道要在编译时调用的函数的签名。

例如：

Declare Function GetUserName Lib "advapi32.dll" Alias _
"GetUserNameA" (ByVal lpBuffer As String, ByRef nSize As Integer) As Integer
Function GetUser()
   Dim RetVal As Integer
   Dim UserName As String
   Dim Buffer As String
   Buffer = New String(CChar(" "), 25)
   RetVal = GetUserName(Buffer, 25)
   UserName = Strings.Left(Buffer, InStr(Buffer, Chr(0)) - 1)
   MsgBox(UserName)
End Function

此代码从 advapi32.dll 调用“GetUserNameA”函数。有许多站点专门列出任意 Windows 函数的 Declare 语法，因此通常不难找到正确的语法。

If you want to execute a DLL function from the command line, use: Rundll.exe

Note that your exported function is required to match exactly the (C) signature:

void CALLBACK EntryPointW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow);

If it does not, it is undefined as to what will happen, but you will probably crash. The normal routine for calling arbitrary functions from dlls in class VB is to use the Declare statement. You must know the signature of the function you want to call at compile time.

For example:

Declare Function GetUserName Lib "advapi32.dll" Alias _
"GetUserNameA" (ByVal lpBuffer As String, ByRef nSize As Integer) As Integer
Function GetUser()
   Dim RetVal As Integer
   Dim UserName As String
   Dim Buffer As String
   Buffer = New String(CChar(" "), 25)
   RetVal = GetUserName(Buffer, 25)
   UserName = Strings.Left(Buffer, InStr(Buffer, Chr(0)) - 1)
   MsgBox(UserName)
End Function

This code calls the "GetUserNameA" function from advapi32.dll. There are many sites devoted to listing the Declare syntax for arbitrary windows functions, so it is not typically difficult to find the correct one.

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