parent-child

问题 I need to write a delegate for a multi-threaded program that will enable/disable a variety of controls. It seems logical that using one handler for all controls would be the best choice, but I'm not even sure this is possible in .net and if so how to implement. 回答1: public void SetControlsEnabled(bool enabled) { // Make sure we're in the correct thread if (InvokeRequired) { // If not, run the method on the UI thread Invoke(new MethodInvoker(() => SetControlsEnabled(enabled))); return; } //

问题 I copied this function from another stackoverflow subject (to call child methods outside render) and it worked in a small test project window.FindReact = function(dom) { for (var key in dom) { if (key.startsWith("__reactInternalInstance$")) { var compInternals = dom[key]._currentElement; var compWrapper = compInternals._owner; var comp = compWrapper._instance; return comp; } } return null; }; I made a class that shows a messagebox in mid of screen (Fade-in; show msg few seconds; then fade out

问题 I have 2 children, and I want to send signals from children to parent, and an answer (random number, why? why not...) named pipe from the parent to each child. I have this code: #include <stdlib.h> #include <stdio.h> #include <signal.h> #include <sys/types.h> #include <time.h> #include <unistd.h> #include <sys/wait.h> #include <sys/stat.h> #include <fcntl.h> #include <errno.h> #include <unistd.h> #include <string.h> #define WRITE(Str) (void)write(1,Str,strlen(Str)) void handler(int signumber)

问题 I have hierarchy of objects with animation on translation and rotation, the scale xyz are equal and static but not 1. When I freeze scale on a parent mesh it's children's animation goes wild. Is there any way to prevent this from happening? I have found a workaround, but it's not perfect yet. Let's say we have simple setup like this: parentObject=>childObject I put childObject in a group "childObjectGroup" parent childObjectGroup to the world and zero out it's transforms excluding scale. Bake

问题 I have a parent Activity which starts a child activity. In the child activity, I do: toolbar = (Toolbar) findViewById(R.id.app_bar); setSupportActionBar(toolbar); getSupportActionBar().setTitle("Ride"); getSupportActionBar().setDisplayHomeAsUpEnabled(true); When I click the Home/Up button, I finish the activity. @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: finish(); return true; default: return super.onOptionsItemSelected

问题 I'm trying to write a simple script that gets the child count of a GameObject and then destroys the last child (I want it to basically function like a delete key) but I'm getting the error: Can't remove RectTransform because Image (Script) depends on it . Can someone tell me how to resolve this? using UnityEngine; using System.Collections; using UnityEngine.EventSystems; public class DeleteSymbol : MonoBehaviour, IPointerClickHandler { public GameObject deleteButton; public GameObject

问题 If you're only targeting Firefox, Opera, and Chrome, not IE, and you're only targeting modern browsers (released in the ~past year), what is the best way of creating multi-level indentation of options in a select without using optgroups? That is, when you want the parent options to still be selectable, as well as the children? <select> <option> <option> <option> <option> <option> <option> <option> <option> <option> <option> <option> <option> <option> <option> <option> </select> It would be

问题 I have done some research, but as a JavaScript novice, I can't seem to get anything to work for my specific case: I have an iframe in a page, and in that iframe's document, I have the following code: function fun(){ var slideTitle = api.getField('title'); parent.document.getElementById("slidecaptionOoH").innerHTML = slideTitle; In the parent document I have: <h4 id="slidecaptionOoH"></h4> I've tried putting a comment in between the tags, but I still get the error in IE7. The page displays

问题 I am trying to not reinvent the wheel here with my POM files. I have a pom that I am trying to convert into a parent pom.xml file in maven. The project is setup as the following structure: core | ---- pom.xml | ---- Proj A | ---- <parent> pom.xml | Proj A - module 1 | ---- pom.xml | Proj A - module 2 | ---- pom.xml | ---- Proj B | ---- pom.xml I have everything seemingly set up correctly, except something is throwing me off. I have this defined in the cor pom.xml file: <modelVersion>4.0.0<

问题 I'm trying to access from Map Fragment to myfunction() situed in the Parent Fragment Tabs . I tried the following line Tabs parentFragment = (Tabs) getParentFragment(); however parentFragment is null. I read all topics concerning this subjects but none of them helped me... (after maybe I misunderstood them). I have the following files : The Fragment from which I want to call the Parent method. public class Map extends Fragment { View rootView; @Override public View onCreateView(LayoutInflater