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Fixit



Joined: 22 Nov 2012
Posts: 161
Fixit
I have been trying for a month to find out how to detect if a printer is online.

If I can do that, I can use it to load a driver if the printer is online.

I need help converting this to fasm code.

Thanks.

This is what I currently have, but it's not working.

Later I would like to do the same except in Linux.

Code:
; Chk_Printer.asm Returns same value in EAX no matter if printer is ON or OFF ??
;
include \masm32\include\masm32rt.inc
include \masm32\include\winspool.inc
includelib \masm32\lib\winspool.lib

.data

hPrinter dd 0
cbBuffer dd 0
_hpdc    dd 0

.code

start:


invoke GetDefaultPrinter, NULL, ADDR cbBuffer
print str$(eax),13,10
print str$(cbBuffer),13,10

nop

mov ebx, alloc(cbBuffer)

invoke GetDefaultPrinter, ebx, ADDR cbBuffer
print str$(eax),13,10
print ebx,13,10

nop

; If the function succeeds, the return value is nonzero.


invoke OpenPrinter, ebx, ADDR hPrinter, NULL
print str$(eax),13,10
print hex$(hPrinter),13,10

invoke  StartPage, _hpdc

;.if EAX == ERROR_INVALID_HANDLE

;fn MessageBox,0,LastError$(),"Last Error Text",MB_OK

;.else

;.endif

nop

invoke ClosePrinter, hPrinter
print str$(eax),13,10

free ebx

inkey "Press any key to exit..."

exit

end start 
    
Post 22 Mar 2013, 14:47
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comrade



Joined: 16 Jun 2003
Posts: 1137
Location: Russian Federation
comrade
Try to code this in C first and verify that it works. Then convert your API calls to FASM. This will isolate the problems (that is, if it is a problem with your ASM, then your C version should not suffer from it).
Post 22 Mar 2013, 18:04
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