怎么改变鼠标样式

Question

例如我的数遍 移动到 一个范围内  鼠标就自动变成 一个沙漏 或者别的图形  在移出这个区域后 鼠标又恢复成原来的样子~

Answer 1

frameworks/base/services/java/com/android/server/WindowManagerService.java相关的代码位于performLayoutAndPlaceSurfacesLockedInner中： 
                 mMouseSurface =
                    new Surface(mFxSession,
                                0,-1,mMw,mMh,
                                PixelFormat.TRANSPARENT,
                                Surface.FX_SURFACE_NORMAL);
                mCanvas = mMouseSurface.lockCanvas(null);
                mCanvas.drawColor(0x0);                mPath.moveTo(0.0f,   0.0f);
                mPath.lineTo(16.0f, 0.0f);
                mPath.lineTo(0.0f, 16.0f);
                mPath.close();
                mCanvas.clipPath(mPath);
                mCanvas.drawColor(0x66666666);
                mMouseSurface.unlockCanvasAndPost(mCanvas);
                mMouseSurface.openTransaction();
                mMouseSurface.setSize(mMw,mMh);
                mMouseSurface.closeTransaction(); 
默认情况下Android系统用颜色值0×66666666绘制了一个三角形，这个颜色值为32bit——A8R8G8R8，A表示透明度，0表示全部透明，0xff为不透明，0×66表示半透明。 一个沙漏就是2个三角形对拼

Answer 2

  mCanvas.drawColor(0x66666666);