使用IntPtr作为函数指针 [英] Use IntPtr as function pointer

问题描述

我正在使用EM_GETWORDBREAKPROC参数调用SendMessage，该参数返回指向默认EDITWORDBREAKPROC函数的指针。如何在vb.net中为此指针分配委托？ （与Marshal.GetFunctionPointerForDelegate相反）

I''m calling SendMessage with a parameter of EM_GETWORDBREAKPROC which returns a pointer to the default EDITWORDBREAKPROC function. How can I assign a delegate to this pointer in vb.net? (The opposite of Marshal.GetFunctionPointerForDelegate)

推荐答案

引用：

相反的Marshal.GetFunctionPointerForDelegate

The opposite of Marshal.GetFunctionPointerForDelegate

那将是 Marshal.GetDelegateForFunctionPointer 然后！



未经测试的代码片段：

That''ll be Marshal.GetDelegateForFunctionPointer then!

Untested code fragment:

[UnmanagedFunctionPointer(CallingConvention.StdCall)]
public delegate int EDITWORDBREAKPROCW(
  [MarshalAs(UnmanagedType.LPWStr)] StringBuilder lpch,
  int ichCurrent,
  int cch,
  int code);

public EDITWORDBREAKPROCW GetWordBreakProc(IntPtr rawPtr) {
  return (EDITWORDBREAKPROCW)Marshal.GetDelegateForFunctionPointer(
          rawPtr,
          typeof(EDITWORDBREAKPROCW));
}

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