[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 />-->usingSystem.Runtime.InteropServices;
usingSystem.Reflection;

导入API

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />-->[DllImport("user32.dll")]
publicstaticexternIntPtrLoadCursorFromFile(stringfileName);

[DllImport("user32.dll")]
publicstaticexternIntPtrSetCursor(IntPtrcursorHandle);

[DllImport("user32.dll")]
publicstaticexternuintDestroyCursor(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 />-->privatevoidForm1_Load(objectsender,EventArgse)
{
CursormyCursor=newCursor(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,
newobject[]{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 />-->publicvoidSetCursor(Bitmapcursor,PointhotPoint)
{
inthotX=hotPoint.X;
inthotY=hotPoint.Y;
BitmapmyNewCursor=newBitmap(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=newCursor(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 />-->privatevoidForm1_Load(objectsender,EventArgse)
{
Bitmapa=(Bitmap)Bitmap.FromFile("myCur.png");
SetCursor(a,newPoint(0,0));
}