Printer API functions

[tabhijit]

Hi all,

I am getting handle of the printer using OpenPrinterA API function with no error.

But if I am using same handle for GetPrinterA. It says that "handle is invalid".

Please help me,

Thanks,
Abhijit.

 

[royjimenez]

post your code

 

[tabhijit]

Hi,

Code is as followed.

//opening printer Returns true
lb_success = OpenPrinterA (ls_printer_name, ll_printer, lstr_printer_defaults )

// Return 0 i.e. SUCCESS, no error
ll_error = getlasterror()

Now printer handle is stored in ll_printer and is passed to GEtPrinter function.
// Returns false
lb_success = GetPrinterA (ll_printer,2,lstr_str_printer_Info_2,ll_buffer,ll_pcbNeeded)
// Returns 6 i.e.invalid handle.

Thanks,
Abhijit.
ll_error = getlasterror()

 

[royjimenez]

i will see what could be your problem ( if i can find it ), but why don't u use PRINTOPEN ?
have u seen it ?

Regards

 

[royjimenez]

it's difficult to see your problem, 'cause it's very possible that u have a wrong param.

ll_buffer = how long is it ?, 'cause u have to assign memory, example

string ls_dir

ls_dir = space(255)

getcurrentdirectory( ls_dir ) // it's a make up

and did u evaluate lb_success when OpenPrinter is executed ?
ll_printer should be > 0

or your have to take care with your declaration, 'cause there is param with *.

 

[tabhijit]

hi all,

We had evaluated lb_success and it is true and ll_Printer > 0

We have assigned ll_Buffer = ll_PCBneeded.

Still it is giving problem.

Thanks,
Abhijit.