Prototypes?!?

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evil__donkey

Joined: 07 Dec 2003
Posts: 26

evil__donkey 23 Jul 2004, 08:57

Code:

invoke        ShowWindow, [g_hWndMain], SW_SHOWNORMAL

FASM doesn't warn if I mistakingly use

Code:

invoke     ShowWindow, [g_hWndMain]

possibly demonstrating why prototypes are good. =\ (I spent one hour trying to find out the error, and lo! it's right there.)

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23 Jul 2004, 08:57

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 23 Jul 2004, 09:27

evil__donkey wrote:

FASM doesn't warn if I mistakingly use
Code:
invoke  ShowWindow, [g_hWndMain]    

IMHO, this is the right behaviour. Of course you still can use "win32ax.inc" if you can't live without parameter checking. Smile

Here is one simple example why parameter check is bad sometimes:

Code:

        invoke  ExtCreatePen,PS_COSMETIC,1,eax,0,NULL
        invoke  SelectObject,[.DC], eax
        push    eax ; old pen in the stack

; some line drawing invokes

        invoke  SelectObject, [.DC] ;  The old pen is already in the stack
        invoke  DeleteObject,eax   ;  Delete created pen.

In case of parameter check you have to pop eax and then to push it again.

Regards.

23 Jul 2004, 09:27

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8434
Location: Kraków, Poland

Tomasz Grysztar 23 Jul 2004, 09:44

It's the "win32axp.inc" that does parameter checking.

23 Jul 2004, 09:44

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 23 Jul 2004, 10:14

Privalov wrote:

It's the "win32axp.inc" that does parameter checking.

Sorry, my fault.

23 Jul 2004, 10:14

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