problem passing a struc to a macro

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LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 06 May 2005, 01:43

Hi, I'm new in FASM and I have a problem passing a struc to a macro.

This is the macro:

Code:

macro doRect hDC, rc
{
  invoke Rectangle, [hDC],\    ; handle of device context
                    rc.left,\  ; x-coord. of bounding rectangle's upper-left corner
                    rc.top,\   ; y-coord. of bounding rectangle's upper-left corner
                    rc.right,\ ; x-coord. of bounding rectangle's lower-right corner
                    rc.bottom  ; y-coord. of bounding rectangle's lower-right corner
}

And the problem is when I use the macro in this way:

doRect, hDC, rect

FASM throws "Error: undefined symbol"; "instruction: push rc.bottom"

The problem is that rc is not replaced by rect but if I put a space between rc and . then FASM replace correctly but again an error "Error: undefined symbol" "instruction: push rect .bottom"

What can I do to fix it?

06 May 2005, 01:43

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland

Tomasz Grysztar 06 May 2005, 04:56

Code:

macro doRect hDC, rc
{
  invoke Rectangle, [hDC],\
                    rc#.left,\
                    rc#.top,\
                    rc#.right,\
                    rc#.bottom
}

06 May 2005, 04:56

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 06 May 2005, 14:13

remember that in fasm "." character is normal part of name, like any letter or digit, not operator to separate structure members. Looking like such operator is only kind-of standard and behavior of "struc" macrodirective.

And since "." is normal part of name, FASM has seen "rc.left" symbol, which isn't equal with "rc" and so it wasnt replaced.

06 May 2005, 14:13

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 06 May 2005, 14:26

Thanks to both, I tested the code of Privalov and it works fine Very Happy

Vid thanks for your reply, I did not know what you say about the dot.

06 May 2005, 14:26

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland

Tomasz Grysztar 06 May 2005, 16:46

BTW, fasm's syntax highlighting (applied also on this forum) shows you this fact - the special characters (which split words) are shown in blue, and dot isn't.

06 May 2005, 16:46

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 06 May 2005, 20:46

ahp, good point Razz

thanks again Privalov

06 May 2005, 20:46

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