Hi,

It's me again.
Sometimes a button can be enabled or disabled by the program according to the current conditions. For example, if you click the save file button, the button will be disabled after your file is saved until you modify you file again.

My question is which API controls the enable and disable operations? cause I don't know how to set the break point in SoftIce.

Thanks!

This depends on the language that the program was written in. If it is Visual Basic you will find a description of how to do this on the New Visual Basic 6.0 web site anounced a few days ago. You will also find a lot more information.

Hello tudou,
it can be done in at least to way:
1) EnableWindow
2) sending a WM_ENABLE with SendMessage to the control

Regards,
BobTheRock

If you like enable for buttons and menus for VB read E_bliss tuts on his site very good stuff..if you like delphi or vc++ read on immortal DEscendants web(by lord) .. you will find all that you need ..


NeO'X'QuiCK

Can anyone post the urls to such site? Thx.


Regards,
BobTheRock

whoo whoo CripleWare ;DD

if it's VC++/WIN32ASM than it sets a flag [01/00]
on the API that controls the "Enable/Disable" function.

01=Enable
00=Disable

Normaly there would be a MOV instruction ;
Mov EAX,0000001 or semilar instruction to control the di/en function...
find that and kick it! ;D

try Yoda Window Manager,
i forgot where's his homepage is.

y0da.cjb.net

Cya...

CoDe_InSiDe

If this was the c++ code:

GetDlgItem(IDC_BUTTON_EXIT)->EnableWindow(FALSE);

you could set a bpx on enablewindow and find something like this:

0040164F push 0 <-- Modify this
00401651 push 3E8h
00401656 mov ecx, [ebp-4]
00401659 call j_?GetDlgItem@CWnd@@QBEPAV1@H@Z ; CWnd::GetDlgItem(int)
0040165E mov ecx, eax
00401660 call j_?EnableWindow@CWnd@@QAEHH@Z ; CWnd::EnableWindow(int)

All you have to do is change the 0 at 0040164F to a 1. The code above was disassembled in IDA, so it won't look like that in SoftIce.