return 0; } 4、virtual的继承性：只要基函数定义了virtual，继承类的该函数也就具有virtual属性；即 GrandFather， Father ，Son同时定义virtual void fun()与GrandFather一个定义virtual void fun效果是一样的。
, true)] public const Android.OS.ParcelableWriteFlags ParcelableWriteReturnValue = 1; 欄位值 Value = 1 ParcelableWriteFlags 屬性 RegisterAttribute ObsoleteAttribute 備註 要搭配 #writeToParcel 使用的旗標:正在寫入的物件是傳回值,這是函式的結果,例如 「 Parcelable someFunction()」、「...
classTestClass{publicclassShape{publicconstdoublePI = Math.PI;protecteddouble_x, _y;publicShape(){ }publicShape(doublex,doubley){ _x = x; _y = y; }publicvirtualdoubleArea(){return_x * _y; } }publicclassCircle:Shape{publicCircle(doubler) :base(r,0){ }publicoverridedoubleArea(){return...
} static void Main(){ double r = 3.0, h = 5.0;Dimensions c = new Circle(r);Dimensions s = new Sphere(r);Dimensions l = new Cylinder(r, h);// Display results:Console.WriteLine("Area of Circle = {0:F2}", c.Area());Console.WriteLine("Area of Sphere = {0...
mNeedsDisplayListSync置为true,表示需要向RenderThread同步DisplayList的信息。 具体的DisplayList信息则保存在mStagingDisplayList中。 再回到DrawFrameTask类的成员函数run中,它的执行逻辑如下所示: 1)、创建一个TreeInfo对象,模式为MODE_FULL,暂且记下。 2)、调用成员函数syncFrameState将应用程序窗口的Display List、Re...
1.通过mSurfaceControlDisplayFactory的createDisplay()来获取对应的displayToken,由于是虚拟设备,跟BUILT_IN设备获取方式是不同的; 2.VirtualDisplay的mUniqueId格式为:virtual:com.hly.test,1000(ownerUid),-display(name),0; 3.将创建的VirtualDisplayDevice加入mVirtualDisplayDevices进行管理; 4.projection.register...
void SurfaceFlinger::doComposition() { ATRACE_CALL(); const bool repaintEverything = android_atomic_and(0, &mRepaintEverything); for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) { const sp<DisplayDevice>& hw(mDisplays[dpy]); ...
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(void*)ImageReader_discardFreeBuffers}};staticconstJNINativeMethod gImageMethods[]={{"nativeCreatePlanes","(II)[Landroid/media/ImageReader$SurfaceImage$SurfacePlane;",(void*)Image_createSurfacePlanes},{"nativeGetWidth","()I",(void*)Image_getWidth},{"nativeGetHeight","()I",(void*)Image_get...
publicconstdoublePI=Math.PI; 8 protecteddoublex, y; 9 publicDimensions() 10 { 11 } 12 publicDimensions(doublex,doubley) 13 { 14 this.x=x; 15 this.y=y; 16 } 17 18 publicvirtualdoubleArea() 19 { 20 returnx*y; 21 } 22