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1. Getting failed when connecting to postgresql

#3375

Posted by: mooncake 2004-02-15 17:22:51

Hi,
I had make a linked the libpq.a to the linker there, and copied libpq.dll to the test.cpp same folder, but it prompt me this: 8 C:testmain.cpp
`PQhost' undeclared (first use this function)

Anythings i missed to call it to the compiler?

Thanks.

Meow~

2. Re: Getting failed when connecting to postgresql

#3376

Posted by: upCASE 2004-02-15 19:38:42

Hi!
Guess not. Judging from the compiler error you gave you missed to include some header file in your source.
"8 C:testmain.cpp `PQhost' undeclared (first use this function)" -> Means: In linhe 8 in main.cpp you're using the class/struct/type/variable PQhost, but it hasn't been declared yet. So, you can't use it :)
Check if PQhost is a variable. If so, declare it right before you use it. If it is a PQ internal type, include the header where it is 'typedef'ed.

upCASE
-----------------------------------
If it was hard to write, it should be hard to read!- Do. Or do not. There is no try!

3. Re: Getting failed when connecting to postgresql

#3377

Posted by: mooncake 2004-02-15 20:47:00

Hi UpCase,

PQHost() is a function where it is one of the prototype in libpq.dll. Meanwhile, i can't use libpq++ and libpqxx, it seems like compile failed... :'(
I don't know what files i have to include now....

Thank you.

Meow~

4. Re: Getting failed when connecting to postgresql

#3378

Posted by: upCASE 2004-02-15 21:06:52

Hi!
Never used Postgres before, but maybe this helps:
http://www.postgresql.org/docs/7.4/interactive/libpq-status.html

upCASE
-----------------------------------
If it was hard to write, it should be hard to read!- Do. Or do not. There is no try!

5. Re: Getting failed when connecting to postgresql

#3379

Posted by: mooncake 2004-02-15 21:34:17

Hi UpCase,
THank you. But, it seems like i am calling the library failed, so that i can't use those functions.. :(
PostgreSQL is powerful than mySQL, and most of the functions that mySQL doesn't support, but PostgreSQL do support.. :)

Meow~

6. Re: Getting failed when connecting to postgresql

#3386

Posted by: mooncake 2004-02-16 21:57:44

Hi UpCase,
Finally... i had successfully connected to postgreSQL with Dev-Cpp

:)

Meow~

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