我应该怎么做才能让这段代码在 VS 2010 中工作？

发布于 2024-09-08 12:58:42 字数 1273 浏览 1 评论 0原文

我已手动使用此代码通过代码模拟系统的鼠标单击。

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

public class Form1 : Form
{
   [DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
   public static extern void mouse_event(long dwFlags, long dx, long dy, long cButtons, long dwExtraInfo);

   private const int MOUSEEVENTF_LEFTDOWN = 0x02;
   private const int MOUSEEVENTF_LEFTUP = 0x04;
   private const int MOUSEEVENTF_RIGHTDOWN = 0x08;
   private const int MOUSEEVENTF_RIGHTUP = 0x10;

   public Form1()
   {
   }

   public void DoMouseClick()
   {
      //Call the imported function with the cursor's current position
      int X = Cursor.Position.X;
      int Y = Cursor.Position.Y;
      mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0);
   }

   //...other code needed for the application
}

但现在我正在使用 VS 2010 和 Windows 7，我现在执行此代码时遇到错误

mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0);

所以对此有任何建议...

我遇到的错误是：

检测到 PInvokeStackImbalance
对 PInvoke 函数“ClickingApp!ClickingApp.Form1::mouse_event”的调用导致堆栈不平衡。这可能是因为托管 PInvoke 签名与非托管目标签名不匹配。检查 PInvoke 签名的调用约定和参数是否与目标非托管签名匹配。

原文

I have used this code manually to simulate a mouse click by system through code.

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

public class Form1 : Form
{
   [DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
   public static extern void mouse_event(long dwFlags, long dx, long dy, long cButtons, long dwExtraInfo);

   private const int MOUSEEVENTF_LEFTDOWN = 0x02;
   private const int MOUSEEVENTF_LEFTUP = 0x04;
   private const int MOUSEEVENTF_RIGHTDOWN = 0x08;
   private const int MOUSEEVENTF_RIGHTUP = 0x10;

   public Form1()
   {
   }

   public void DoMouseClick()
   {
      //Call the imported function with the cursor's current position
      int X = Cursor.Position.X;
      int Y = Cursor.Position.Y;
      mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0);
   }

   //...other code needed for the application
}

But now i am using VS 2010 and Windows 7 and i get the error on execution of this code now

mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0);

So any suggestions for this ...

The error i encounter is:

PInvokeStackImbalance was Detected
A call to PInvoke function 'ClickingApp!ClickingApp.Form1::mouse_event' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.

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猫性小仙女 2024-09-15 12:58:42

问题出在 P/Invoke 签名上，试试这个。

[DllImport("user32.dll")]
static extern void mouse_event(uint dwFlags, uint dx, uint dy, 
uint dwData, UIntPtr dwExtraInfo);

DWORD 是 32 位，而 C# long 是 64 位

另外刚刚注意到您正在指定调用约定，在使用 P/Invoke for Windows API 时最好不要指定它，否则您可以使用 CallingConvention.Winapi，这是错误的调用约定通常是堆栈不平衡的原因。

The problem is with the P/Invoke signature try this.

[DllImport("user32.dll")]
static extern void mouse_event(uint dwFlags, uint dx, uint dy, 
uint dwData, UIntPtr dwExtraInfo);

DWORD is 32 bits while a C# long is 64 bits

Also just noticed you are specifying the calling convention, it is better to not specify it when using P/Invoke for the Windows API, or you could using CallingConvention.Winapi, the wrong calling convention is typically the cause of a stack imbalance.

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