Я пытаюсь заставить приложение получить местоположение щелчка мышью и названия (имена) окон, в которых нажимает пользователь.В настоящее время я использовал LowLevelMouseProc, который дает хорошие результаты, но он вызывает сбой приложения при каждом нажатии на Google Chrome.Вот код:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Diagnostics;
//An attempt to print the screen name of the active window and mouse coordinates at every mouse click
namespace Project1
{
class InterceptMouse
{
private static LowLevelMouseProc _proc = HookCallback;
private static IntPtr _hookID = IntPtr.Zero;
public static void Main()
{
_hookID = SetHook(_proc);
Application.Run();
UnhookWindowsHookEx(_hookID);
Application.Exit();
}
private static IntPtr SetHook(LowLevelMouseProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_MOUSE_LL, proc,
GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam);
private static IntPtr HookCallback(
int nCode, IntPtr wParam, IntPtr lParam)
{
int nodeCount;
LinkedListNode<StringBuilder> nodefirst = new LinkedListNode<StringBuilder>(null);
LinkedListNode<StringBuilder> nodeprev = new LinkedListNode<StringBuilder>(null);
LinkedList<StringBuilder> windowlist = new LinkedList<StringBuilder>();
if (nCode >= 0 &&
MouseMessages.WM_LBUTTONDOWN == (MouseMessages)wParam)
{
MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT));
Console.WriteLine(hookStruct.pt.x + ", " + hookStruct.pt.y);
IntPtr hwnd = GetForegroundWindow();
StringBuilder windowtitle = new StringBuilder();
if(GetWindowText(hwnd, windowtitle, 2000)>0)
Console.WriteLine(windowtitle);
//Console.WriteLine(nodeCount);
if (nodeCount == 0)
{
nodefirst = windowlist.AddFirst(windowtitle);
nodeCount++;
}
else
{
if (nodeCount == 1)
{
nodeprev = windowlist.AddAfter(nodefirst, windowtitle);
nodeCount++;
}
if (nodeCount > 1)
{
nodeprev = windowlist.AddAfter(nodeprev, windowtitle);
nodeCount++;
}
}
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
private const int WH_MOUSE_LL = 14;
private enum MouseMessages
{
WM_LBUTTONDOWN = 0x0201,
WM_LBUTTONUP = 0x0202,
WM_MOUSEMOVE = 0x0200,
WM_MOUSEWHEEL = 0x020A,
WM_RBUTTONDOWN = 0x0204,
WM_RBUTTONUP = 0x0205
}
[StructLayout(LayoutKind.Sequential)]
private struct POINT
{
public int x;
public int y;
}
[StructLayout(LayoutKind.Sequential)]
private struct MSLLHOOKSTRUCT
{
public POINT pt;
public uint mouseData;
public uint flags;
public uint time;
public IntPtr dwExtraInfo;
IntPtr hwnd;
}
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook,
LowLevelMouseProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
public static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);
}
}
Хотя, когда я не использую низкоуровневый хук, а просто использую Thread.sleep (5000) и продолжаю получать имена активных окон каждые 5 секунд, он не падает.Пожалуйста, помогите мне выяснить, почему?,Пожалуйста, помогите мне.