API 鼠标坐标获取

效率就是你了解的类库。

每天学习一点点。

c#
private void Form1_MouseMove(object sender, MouseEventArgs e) {
this.Text = Cursor.Position.X.ToString() + ":" +
Cursor.Position.Y.ToString();
}
调用API
using System;
using System.Collections.Generic;
using ponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace mouse
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public delegate int HookProc(int ncode, IntPtr wParam, IntPtr lParam);
static int hHook = 0;
public const int WH_MOUSE = 7;
//private System.Windows.Forms.Button button1;
//Declare MouseHookProcedure as HookProc type.
HookProc MouseHookProcedure;
//Declare wrapper managed POINT class.
[StructLayout(LayoutKind.Sequential)]
public class POINT
{
public int x;
public int y;
}
//Declare wrapper managed MouseHookStruct class.
[StructLayout(LayoutKind.Sequential)]
public class MouseHookStruct
{
public POINT pt;
public int hwnd;
public int wHitTestCode;
public int dwExtraInfo;
}
//Import for SetWindowsHookEx function.
//Use this function to install thread-specific hook.
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn,
IntPtr hInstance, int threadId);
//Import for UnhookWindowsHookEx.
//Call this function to uninstall the hook.
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
public static extern bool UnhookWindowsHookEx(int idHook);
//Import for CallNextHookEx.
//Use this function to pass the hook information to next hook procedure in chain.
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(int idHook, int nCode, IntPtr wParam, IntPtr lParam);
private void button1_Click(object sender, EventArgs e)
{
if (hHook == 0)
{
// Create an instance of HookProc.
MouseHookProcedure = new
HookProc(Form1.MouseHookProc);
hHook = SetWindowsHookEx(WH_MOUSE,
MouseHookProcedure,
(IntPtr)0,
AppDomain.GetCurrentThreadId());
//If SetWindowsHookEx fails.
if (hHook == 0)
{
MessageBox.Show("SetWindowsHookEx Failed");
return;
}
button1.Text = "UnHook Windows Hook";
}
else
{
bool ret = UnhookWindowsHookEx(hHook);
//If UnhookWindowsHookEx fails.
if (ret == false)
{
MessageBox.Show("UnhookWindowsHookEx Failed");
return;
}
hHook = 0;
button1.Text = "Set Windows Hook";
this.Text = "Mouse Hook";
}
}
public static int MouseHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
//Marshall the data from callback.
MouseHookStruct MyMouseHookStruct =
(MouseHookStruct)Marshal.PtrToStructure(lParam,
typeof(MouseHookStruct));
if (nCode < 0)
{
return CallNextHookEx(hHook, nCode, wParam, lParam); }
else
{
//Create a string variable with shows current mouse. coordinates
String strCaption = "x = " +
MyMouseHookStruct.pt.x.ToString("d") +
" y = " +
MyMouseHookStruct.pt.y.ToString("d");
//Need to get the active form because it is a static
function.
Form tempForm = Form.ActiveForm;
//Set the caption of the form.
tempForm.Text = strCaption;
return CallNextHookEx(hHook, nCode, wParam, lParam); }
}
}
}。