parent-child

So I'm getting to know how processes work and have written some simple code. #include <stdio.h> #include <sys/types.h> #include <sys/ipc.h> #include <sys/sem.h> int SemId; void SemGet(int n) { SemId = semget(IPC_PRIVATE, n, 0600); if (SemId == -1) { exit(1); } } int SemSetVal(int SemNum, int SemVal) { return semctl(SemId, SemNum, SETVAL, SemVal); } int SemOp(int SemNum, int SemOp) { struct sembuf SemBuf; SemBuf.sem_num = SemNum; SemBuf.sem_op = SemOp; SemBuf.sem_flg = 0; return semop(SemId, & SemBuf, 1); } void SemRemove(void) { (void) semctl(SemId, 0, IPC_RMID, 0); } void child(int vchild) {

I want you to know before I get started that I have been looking at all of the sub sub menu questions and I didn't see anything that could help the code I already have laid out. I appreciate any help at all that anybody can give me. So, I am trying to add a sub sub menu and I thought I had figured it out, but I don't think I quite understand how to get the child combinators to work. If you could take a look at that part of the code specifically, you would be on my 'saint list.' ETA: Oh yeah, and the problem is that the sub sub menu does not go out to the right and show up next to the parent

I can pass in a Child to a member function expecting a Parent, however when using vectors I get a compile error saying there's no matching declaration. See the CorrelationEngineManager.cpp call to getUniqueLabels() at the bottom ServerEvent.h #ifndef SERVEREVENT_H #define SERVEREVENT_H #define SERVEREVENT_COLS 3 #include "Event.h" #include <vector> class ServerEvent: public Event { private: public: ServerEvent(std::vector<std::string> tokens); void print(); }; #endif Event.h #ifndef EVENT_H #define EVENT_H #include <string> #define EVENT_STOP 0 #define EVENT_START 1 class Event { private:

There are a couple of things I need to explain before my question makes sense. On my first page I have a main div where I'm loading markup from another page using the jquery load() method. The html I'm loading is linked to a .js page where my script is. The js page is where I'm manipulating the content of the main div. On my js page I loop through an array of variables I pull from a database and append() them to the main div. In the for loop I wrap each row in its own div and include an anchor tag. The anchor tag is what I want to attach the click() method to so I can call a function once it

This question is about which C++ style cast should be used to make this conversion. I am aware that a C style cast can achieve this. For the following class structure: class Foo {}; class Bar : public Foo {}; Say that I am given: Foo* ptr; and I want to cast it to a Bar* which type of cast should I be using? It seems like I must use dynamic_cast as it is: Used for conversion of polymorphic types I wanted to avoid dynamic_cast since it is a run time cast. You are correct that dynamic_cast is usually the most appropriate for this situation. However, if you know that the pointer is actually

I've just tried to implement a menu system I saw a tutorial onto a game that I'm working on and it was all smooth sailing until I've now encountered a problem with the stage being set to null and I don't know how to stop it. The line that keeps breaking it is in the AvoiderGame.as file and is the stage.addEventListener(Event.ADDED_TO_STAGE, init); it keeps returning the following error TypeError: Error #1009: Cannot access a property or method of a null object reference. at AvoiderGame()[M:\Users\Andy\Documents\Programming For Fun\Flash\Tutorial - Avoider Game\Classes\AvoiderGame.as:29] at

I have a visual component derived from TWinControl. I need to do some work in my component when its parent control has been resized. In general case, the "Align" property of my component is alNone. How to catch the event of resizing the parent control? Is it possible? If a TWinControl (the parent) is changed in size, then TWinControl.Realign is called in the WM_SIZE handler. This bubbles via TWinControl.AlignControls into iterating over all the child controls which have the Align property set to anything else then alNone . When set to alCustom , SetBounds of the child controls will be called

I have a javascript variable called "myvar" in two different frames (frame1 and frame2). I need to take the myvar in frame1 and set it as the value of the myvar in frame2. How do I do this without an external script? If the variable is in the parent, use: window.parent.varName If it's in another frame, go through the parent, then to the frame: window.parent.frameName.varName 来源： https://stackoverflow.com/questions/15009722/how-to-save-javascript-variable-between-frames