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[BUG/PRB.] VFP 9.0 FIX - GETPEM() Function
January 2024
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CCB
1. BUG:
In vfp9 (and vfp6, vfp7, vfp8), the GETPEM() function can not return the user-defined method code in a program (.prg) file.
The bug was reported by xinjie.
2. CAUSE:
There are some BUGs in the following code.
3. RESOLUTION:
We can write some code to fix the BUG.
Label5ba392 ::
mov ecx , dword ptr [ esp + 8 ] ;0x005ba392 : 8b4c2408
pushd 0FFFFFFFFh ;0x005ba396 : 6aff
lea eax , dword ptr [ esp + 16 ] ;0x005ba398 : 8d442410
push eax ;0x005ba39c : 50
push esi ;0x005ba39d : 56
pushd 00h ;0x005ba39e : 6a00
pushd 0FFFFFFFFh ;0x005ba3a0 : 6aff
push ecx ;0x005ba3a2 : 51
mov edi , 020h ;0x005ba3a3 : bf20000000
push edx ;0x005ba3a8 : 52
mov dword ptr [ esp + 40 ] , edi ;0x005ba3a9 : 897c2428
call Fun433a39 ;0x005ba3ad : e88796e7ff
mov eax , dword ptr [ esp + 40 ] ;0x005ba3b2 : 8b442428
add esp , 01Ch ;0x005ba3b6 : 83c41c
cmp eax , edi ;0x005ba3b9 : 3bc7
jne Label5ba3cc ;0x005ba3bb : 750f
;
; -------------------------------------------------
; VFP 9.0 FIX - GETPEM() Function
; November 2017
; -------------------------------------------------
; CCB
;
; Returns the user-defined method code in a program (.prg) file.
;
; 2017/11/13, by ccb
;
cmp dword ptr vfpa_sys9110_data,00h
je Label5ba3bd
cmp dword ptr [ esp + 4 ] , offset Label8e5024 ;; Fun8e4f83 .. ; proc near
je Label5ba3bc
cmp dword ptr [ esp + 4 ] , offset Label8e506f ;; Fun8e4f83 .. ; proc near
je Label5ba3bc
jmp Label5ba3bd
Label5ba3bc ::
cmp dword ptr [ esi + 4 ] , 0FFFFFFFFh
jne Label5ba3c3
cmp dword ptr [ esi + 16 ] , 00h
jne Label5ba3c3
jmp Label5ba3cc
Label5ba3bd ::
cmp dword ptr [ esi + 4 ] , 0FFFFFFFFh ;0x005ba3bd : 837e04ff
je Label5ba3cc ;0x005ba3c1 : 7409
Label5ba3c3 ::
mov eax , 01h ;0x005ba3c3 : b801000000
pop edi ;0x005ba3c8 : 5f
ret 08h ;0x005ba3c9 : c20800
4. APPLIES TO:
VFP 6.0.8167.0
VFP 6.0.8961.0 (SP5)
VFP 7.0.0.9262
VFP 7.0.0.9465 (SP1)
VFP 8.0.0.2521
VFP 8.0.0.3117 (SP1)
VFP 9.0.0.2412
VFP 9.0.0.3504 (SP1)
VFP 9.0.0.4611 (SP2)
VFP 9.0.0.5015 (SP2)
VFP 9.0.0.5411 (SP2)
VFP 9.0.0.5721 (SP2)
VFP 9.0.0.5815 (SP2)
VFP 9.0.0.6303 (SP2)
VFP 9.0.0.6602 (SP2)
VFP 9.0.0.7423 (SP2)
The bug has been fixed in VFP Advanced.
5. REFERENCE WEBSITES:
1, baiyujia.com:
http://www.baiyujia.com
http://www.baiyujia.com/vfpdocuments/f_vfp9fix228.asp
2, tek-tips.com:
http://www.tek-tips.com/viewthread.cfm?qid=1283345
3, foxite.com:
https://www.foxite.com/archives/to-find-out-if-there-is-code-in-subclass-0000398070.htm
6. OTHER:
For reference only, there is no guarantees.
Any questions or suggestions, please send me an email at ccb2000@163.com.
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