[转]C# winForm 自定义鼠标样式的两种方法

本文转自：http://www.cnblogs.com/hzbzxm/archive/2008/09/15/1291104.html

以前试过在WinForm中自定义鼠标样式,结果显示出来的鼠标变成单色。

　　后来百度了下，原来要用ＡＰＩ来做。

首先引入两个命名空间

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> using System.Runtime.InteropServices;
using System.Reflection;

导入API

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> [DllImport( " user32.dll " )]
public static extern IntPtrLoadCursorFromFile( string fileName);

[DllImport( " user32.dll " )]
public static extern IntPtrSetCursor(IntPtrcursorHandle);

[DllImport( " user32.dll " )]
public static extern uint DestroyCursor(IntPtrcursorHandle);

接下来使用自己的鼠标样式

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> private void Form1_Load( object sender,EventArgse)
{
CursormyCursor = new Cursor(Cursor.Current.Handle);
IntPtrcolorCursorHandle = LoadCursorFromFile( "my .cur " ); // 鼠标图标路径
myCursor.GetType().InvokeMember( " handle " ,BindingFlags.Public |
BindingFlags.NonPublic | BindingFlags.Instance |
BindingFlags.SetField, null ,myCursor,
new object []{colorCursorHandle});
this .Cursor = myCursor;
}

现在介绍另一种不用API方式的，鼠标样式只需要一张背景透明的图片就行了，png或gif格式的

写个方法

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> public void SetCursor(Bitmapcursor,PointhotPoint)
{
int hotX = hotPoint.X;
int hotY = hotPoint.Y;
BitmapmyNewCursor = new Bitmap(cursor.Width * 2 - hotX,cursor.Height * 2 - hotY);
Graphicsg = 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();
}

在你想要改变鼠标样式的事件里头使用这个方法就行了

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> private void Form1_Load( object sender,EventArgse)
{
Bitmapa = (Bitmap)Bitmap.FromFile( " myCur.png " );
SetCursor(a, new Point( 0 , 0 ));
}