Unhandled exception in *.exe: 0xC0000005: Access Violation.

[minor28]

I have a Dialog app with a tab control with 7 tabs. The tabs are created om the MainDlg.

Code Select Expand


.if eax==WM_INITDIALOG
...
;Create the tab dialogs
invoke CreateDialogParam,hInstance,IDD_TAB1,hTab,addr Tab1Proc,0
mov hTabDlg,eax
invoke CreateDialogParam,hInstance,IDD_TAB2,hTab,addr Tab2Proc,0
mov hTabDlg[4],eax
invoke CreateDialogParam,hInstance,IDD_TAB3,hTab,addr Tab3Proc,0
mov hTabDlg[8],eax
invoke CreateDialogParam,hInstance,IDD_TAB4,hTab,addr Tab4Proc,0
mov hTabDlg[12],eax
invoke CreateDialogParam,hInstance,IDD_TAB5,hTab,addr Tab5Proc,0
mov hTabDlg[16],eax
invoke CreateDialogParam,hInstance,IDD_TAB6,hTab,addr Tab6Proc,0
mov hTabDlg[20],eax
invoke CreateDialogParam,hInstance,IDD_TAB7,hTab,addr Tab7Proc,0
mov hTabDlg[24],eax
...


When I close the main dlg I get the unhandled exception. If I comment out tab3,4,6 and 7 it works. The exception occur if one or more of these tabs are created.

Code Select Expand


.elseif eax==WM_CLOSE
invoke EndDialog,hWin,NULL
.else
mov eax,FALSE
ret
.endif
mov eax,TRUE
ret


A breakpoint on EndDialog and steping further goes over ret to user32.dll address 7E368734 no matter if all tabs are created or not. The exception occurs on address 7E378EF7 a bit furter in user32.dll.

with tab3 uncommented and the tabdlg is cleaned from code the exception still occurs.

Now I am out of ideas how to solve this problem and I hope on outside ideas.

[minor28]

I found it.

In common for the four erroneous tabs is richedit controls. In operation I didn't notis anything only when closing the app. What was wrong was that I loaded Richedit.dll in WM_INITDIALOG message of the MainDlg. Moving it before createing the MainDlg eleminated the error.

[dedndave]

we all get error c0000005 at one point or another - lol
i was going to change my nic to c0000005

[Farabi]

we all get error c0000005 at one point or another - lol
i was going to change my nic to c0000005

You'll frustated anyone who see that nick, or even worse, they debugging you.  :green