C#更改應用的滑鼠指標
阿新 • • 發佈:2021-09-22
第一種:(呼叫系統API)
首先引入兩個名稱空間
using System.Runtime.InteropServices;
using System.Reflection;
然後匯入API
[DllImport("user32.dll")]
public static extern IntPtr LoadCursorFromFile(string fileName);
[DllImport("user32.dll")]
public static extern IntPtr SetCursor(IntPtr cursorHandle);
[DllImport("user32.dll")]
接下來使用自己的滑鼠樣式
private void Form1_Load(object sender, EventArgs e) { Cursor myCursor = new Cursor(Cursor.Current.Handle); IntPtr colorCursorHandle = LoadCursorFromFile("my.cur");//滑鼠圖示路徑 myCursor.GetType().InvokeMember("handle", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetField, null, myCursor, new object[] { colorCursorHandle }); this.Cursor = myCursor; }
第二種:(不用API方式的,滑鼠樣式只需要一張背景透明的圖片就行了,png或gif格式的)
public void SetCursor(Bitmap cursor, Point hotPoint) { int hotX = hotPoint.X; int hotY = hotPoint.Y; Bitmap myNewCursor = new Bitmap(cursor.Width * 2 - hotX, cursor.Height * 2 - hotY); Graphics g = Graphics.FromImage(myNewCursor); g.Clear(Color.FromArgb(0, 0, 0, 0)); g.DrawImage(cursor, cursor.Width - hotX, cursor.Height - hotY, cursor.Width, cursor.Height); this.Cursor = new Cursor(myNewCursor.GetHicon()); g.Dispose(); myNewCursor.Dispose(); }
在你想要改變滑鼠樣式的事件裡頭使用這個方法就行了,如:
private void Form1_Load(object sender, EventArgs e)
{
Bitmap a=(Bitmap)Bitmap.FromFile("myCur.png");
SetCursor(a, new Point(0, 0));
}