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Hello,
I have a problem that seemed easy to me at first, but now I cannot find a way to solve it. I have Object1 that establishes a database connection in its constructor. In one of Objects1 methods I create Object2.
I want to access a database connection (established by Object1) in Objects2 constructor. Is this possible (I have to use Objects1 variable)?? How can I solve that?
Make object2 take a db connection type in its constructor, assuming there is a handle of some sort to the database created in object1.
Hmm, don't know why but I get a crash when I try to use pointer (handle) to database. Can database be used simultaneously in object1 in 2 with the same handle?
I am also thinking of a different approach. I can declare object1 as parent of object2. Can I then somehow access parents variables? If yes, how?
If it crashes when you try to use the same pointer, you are probably doing something else wrong than violating some rule about the use of the database - perhaps you have freed the original pointer and keeping a copy, or overwritten the data the pointer points at?
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Mats
Sorry, crash was caused by typo in a program. Now it is working! Thank you!
So now I must pass handle to database to all functions in object2, that need it, right?
Or you could make Object2 hold a handle in the class itself.Quote:
Originally Posted by Tiansen
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Mats
Yes, I must do that, because else I have troubles. How can I do that?
I owe you a beer ;)
I think I figured it out. I make a variable (pointer2) in object2 and then make pointer2=pointer1 and it works.
Thank you all for help!