C# 如何跟踪鼠标的X/Y位置并将其打印到标签上?
我知道如何通过MSDN上的示例修改光标位置 我的问题是如何在鼠标移动时检查鼠标的位置,然后打印X和Y位置以表示标签 编辑:假设我想从整个屏幕跟踪鼠标位置 编辑2:我的应用程序将处于后台/最小化状态 我已经在使用鼠标挂钩:C# 如何跟踪鼠标的X/Y位置并将其打印到标签上?,c#,winforms,mousemove,low-level-api,C#,Winforms,Mousemove,Low Level Api,我知道如何通过MSDN上的示例修改光标位置 我的问题是如何在鼠标移动时检查鼠标的位置,然后打印X和Y位置以表示标签 编辑:假设我想从整个屏幕跟踪鼠标位置 编辑2:我的应用程序将处于后台/最小化状态 我已经在使用鼠标挂钩: namespace Program { public partial class MouseHook { [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = C
namespace Program
{
public partial class MouseHook
{
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
private static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, IntPtr 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 void DoMouseClick()
{
int X = Cursor.Position.X;
int Y = Cursor.Position.Y;
IntPtr newP = new IntPtr(Convert.ToInt64("0", 16));
mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, newP);
}
}
}
可以使用的EventArgs,因为它保存鼠标坐标。从这里,您可以轻松地将标签的文本属性设置为从
e
(MouseMove EventArgs)获取的X或Y坐标
是关于系统级鼠标事件处理调用(低级鼠标过程)的msdn文档
是使用低级鼠标进程更改滚动事件的示例
在第二个链接的答案中,使用WM_MOUSEMOVE from代替WM_mouseweel
需要注意的一点是:当鼠标位于具有提升权限的程序上时,要使此程序继续捕获鼠标事件,必须以提升权限启动此程序
代码(未测试):
要实现这一点,您需要设置Windows挂钩。MSDN文章展示了如何设置鼠标挂钩
我试过了,它捕捉到整个表单上的鼠标,即使鼠标光标在控件上。好的,我明白了。但是,由于我必须有一个对象来执行处理程序,例如:
textBox1.TextChanged+=neweventargs(textBox1\u TextChanged)
我将调用哪个对象?@Help:TextChanged
是错误的事件。您想处理MouseMove
事件。在该事件处理程序方法内部,更新文本框:textBox1.Text=e.Location.ToString()代码>@Cody Gray,我知道。但我的问题是,我将引用什么对象,也就是说我将用textBox1替换什么?@Help:噢,可能是您的表单。您将遇到的问题是,每当光标移动到窗体顶部的子控件上时,它都不会引发窗体上的事件。您真的需要跟踪整个窗口中的鼠标移动,还是只跟踪某个控件(如窗格等)?这已经被问了很多次了。在搜索框中键入“+setwindowshookex+wh_mouse_ll”。或者只使用50毫秒的计时器和光标。Position@HansPassant,计时器解决方案似乎是检查x/y位置的最简单方法。我现在只想知道如何检查位置+1关于此:)@Cody Gray,如果问题在注释答案前3年发布,那么这个问题怎么会是重复的?这个例子很好,只是它是为一个独立的线程设置的,该线程可以找到您的表单,而不是直接绑定到表单。是的,但它很容易适应。
private void Form_MouseMove(object sender, MouseEventArgs e)
{
// Update the mouse coordinates displayed in the textbox.
myTextBox.Text = e.Location.ToString();
}
using System;
using System.Diagnostics;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace CatchMouseMove
{
class InterceptMouse
{
const int INPUT_MOUSE = 0;
const int MOUSEEVENTF_WHEEL = 0x0800;
const int WH_MOUSE_LL = 14;
private static LowLevelMouseProc _proc = HookCallback;
private static IntPtr _hookID = IntPtr.Zero;
public static void Main()
{
_hookID = SetHook(_proc);
if (_hookID == null)
{
MessageBox.Show("SetWindowsHookEx Failed");
return;
}
Application.Run();
UnhookWindowsHookEx(_hookID);
}
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 xPos = 0;
int yPos = 0;
if (nCode >= 0 && MouseMessages.WM_MOUSEMOVE == (MouseMessages)wParam)
{
xPos = GET_X_LPARAM(lParam);
yPos = GET_Y_LPARAM(lParam);
//do stuff with xPos and yPos
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
private enum MouseMessages
{
WM_MOUSEMOVE = 0x0200
}
[StructLayout(LayoutKind.Sequential)]
private struct POINT
{
public int x;
public int y;
}
[StructLayout(LayoutKind.Sequential)]
private struct MSLLHOOKSTRUCT
{
public POINT pt;
public int mouseData;
public int flags;
public int time;
public IntPtr dwExtraInfo;
}
public struct INPUT
{
public int type;
public MOUSEINPUT mi;
}
[StructLayout(LayoutKind.Sequential)]
public struct MOUSEINPUT
{
public int dx;
public int dy;
public int mouseData;
public uint dwFlags;
public int time;
public int dwExtraInfo;
}
[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);
}
}