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Hello world

Started by hghesteemed, September 19, 2012, 05:04:19 AM

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hghesteemed

Hi,

I installed the masm32 and im following a simple tutorial to get hello world working and i can't get any output from the program. What is wrong with the code? Please help. Thanks

.386
.model flat, stdcall
option casemap :none
includeincludeinclude\masm32\include\windows.inc
\masm32\include\kernel32.inc
\masm32\include\masm32.inc
includelibincludelib\masm32\lib\kernel32.lib
\masm32\lib\masm32.lib
.data
HelloWorld db "Hello World!", 0
.code
start:
invoke StdOut, addr HelloWorld
invoke ExitProcess, 0
end start


It assembles and links ok but no output.

Vortex

Hi hghesteemed,

Welcome to the forum.

Did you build your project as CONSOLE application?

\masm32\bin\link /SUBSYSTEM:CONSOLE hello.obj

Don't forget to run your application from the command-line prompt.

hghesteemed

Hi

Yes its a console application, i use the gui to assemble and link, it seems to since I can see both my object code and executable. Just no output when I run.


Vozzie

Hi

Try the "inkey" macro...



include \masm32\include\masm32rt.inc

.data
HelloWorld db "Hello World!",13,10,0
.code
start:
invoke StdOut, addr HelloWorld
inkey "Press a key to continue ..."


invoke ExitProcess, 0
end start


(also more easy to use the masm runtime include)

Greetings

dedndave

i am a bit surprised it assembles with all this...
includeincludeinclude\masm32\include\windows.inc
\masm32\include\kernel32.inc
\masm32\include\masm32.inc
includelibincludelib\masm32\lib\kernel32.lib
\masm32\lib\masm32.lib


at any rate, we have a little shortcut
you can look inside the \masm32\include\masm32rt.inc file with a text editor to see what it does

include \masm32\include\masm32rt.inc
.data
HelloWorld db "Hello World!", 0
.code
start:
invoke StdOut, addr HelloWorld
inkey
invoke ExitProcess, 0
end start

Gunther

Hi hghesteemed,

welcome to the forum.

Gunther
You have to know the facts before you can distort them.

kroz

for a messagebox :

type in .CODE section :

invoke MessageBox, NULL, offset msg, offset cap, MB_OK
invoke ExitProcess, eax

type in .DATA section :

msg db "Hello World ", 0
cap db "Hey There! ",0

hope this helpss

Vortex

Hi kroz,

In addition :

\masm32\bin\link /SUBSYSTEM:WINDOWS ...