Question

vb.net 调用DLL问题

比如我要调用user32.dll中的GetWindowThreadProcessId
我要怎么写？ 详细点

Answer 1

Public Declare Function GetForegroundWindow Lib "user32.dll" () As IntPtr
Public Declare Function GetWindowThreadProcessId Lib "user32.dll" (ByVal hwnd As IntPtr, ByRef ProcessId As Integer) As Integer

'这样获取的数据是不是你要的！ 但不会报错。

Dim hwnd As IntPtr = GetForegroundWindow
Dim ProcessId As Integer
GetWindowThreadProcessId(hwnd , ProcessId

Answer 2

用 COM 当然可以。不过，COM 封装比较复杂，不太熟悉的话，出错调试很麻烦。而且要求的知识面较宽。