第C#對(duì)桌面應(yīng)用程序自定義鼠標(biāo)光標(biāo)[return:MarshalAs(UnmanagedType.Bool)]

publicstaticexternboolGetIconInfo(IntPtrhIcon,refIconInfopIconInfo);

publicstaticCursorCreateCursor(Bitmapbmp,intxHotSpot,intyHotSpot)

varicon=newNativeMethods.IconInfo

xHotspot=xHotSpot,

yHotspot=yHotSpot,

fIcon=false

NativeMethods.GetIconInfo(bmp.GetHicon(),reficon);

returnnewCursor(NativeMethods.CreateIconIndirect(reficon));

}

測(cè)試代碼為：

using(Bitmapbitmap=newBitmap(21,26))

using(Graphicsg=Graphics.FromImage(bitmap))

g.DrawRectangle(Pens.Red,0,0,20,25);

this.Cursor=CursorHelper.CreateCursor(bitmap,3,3);

}

WPF程序

至于WPF程序，和WinForm程序是非常類(lèi)似的，一方面，它也可以通過(guò)光標(biāo)文件來(lái)實(shí)現(xiàn)寫(xiě)入Cursor屬性來(lái)自定義光標(biāo)文件。

至于自己繪制光標(biāo)，上面的代碼基本上也是可以復(fù)用的，不過(guò)相對(duì)的要重新封裝一下，完整代碼如下：

publicclassCursorHelper

staticclassNativeMethods

publicstructIconInfo

publicboolfIcon;

publicintxHotspot;

publicintyHotspot;

publicIntPtrhbmMask;

publicIntPtrhbmColor;

[DllImport("user32.dll")]

publicstaticexternSafeIconHandleCreateIconIndirect(refIconInfoicon);

[DllImport("user32.dll")]

publicstaticexternboolDestroyIcon(IntPtrhIcon);

[DllImport("user32.dll")]

[return:MarshalAs(UnmanagedType.Bool)]

publicstaticexternboolGetIconInfo(IntPtrhIcon,refIconInfopIconInfo);

[SecurityPermission(SecurityAction.LinkDemand,UnmanagedCode=true)]

classSafeIconHandle:SafeHandleZeroOrMinusOneIsInvalid

publicSafeIconHandle()

:base(true)

protectedoverrideboolReleaseHandle()

returnNativeMethods.DestroyIcon(handle);

staticCursorInternalCreateCursor(System.Drawing.Bitmapbitmap,intxHotSpot,intyHotSpot)

variconInfo=newNativeMethods.IconInfo

xHotspot=xHotSpot,

yHotspot=yHotSpot,

fIcon=false

NativeMethods.GetIconInfo(bitmap.GetHicon(),reficonInfo);

varcursorHandle=NativeMethods.CreateIconIndirect(reficonInfo);

returnCursorInteropHelper.Create(cursorHandle);

publicstaticCursorCreateCursor(UIElementelement,intxHotSpot=0,intyHotSpot=0)

element.Measure(newSize(double.PositiveInfinity,double.PositiveInfinity));

element.Arrange(newRect(newPoint(),element.DesiredSize));

varrenderTargetBitmap=newRenderTargetBitmap(

(int)element.DesiredSize.Width,(int)element.DesiredSize.Height,

96,96,PixelFormats.Pbgra32);

renderTargetBitmap.Render(element);

varencoder=newPngBitmapEncoder();

encoder.Frames.Add(BitmapFrame.Create(renderTargetBitmap));

using(varmemoryStream=newMemoryStream())

encoder.Save(memoryStream);

using(varbitmap=newSystem.Drawing.Bitmap(memoryStream))

returnInternalCreateCursor(bitmap,xHotSpot,yHotSpot);

}

需要注意的是，由于使用的System.Drawing.BitMap，是需要引用System.Drawing.dll的

封裝之后，是可以直接傳入U(xiǎn)IElement作為自繪制的光標(biāo)的，得益于WPF的強(qiáng)大