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[ENHANCED] VFP 9.0 FIX - DISPLAY MORE ERROR MESSAGES FOR THE ERROR EXPRESSION IS INVALID
January 2024
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CCB
1. BUG:
In vfp9 (and vfp6, vfp7, vfp8), if the expression you entered for a grid property is not valid,
it will display the error message "Expression is invalid. Use a valid expression for name property".
Please refer to the picture testdynamicforecolor-vfp9.png:
In VFP Advanced, if the expression you entered for a grid property is not valid,
it will display the error message "Expression is invalid. Use a valid expression for name property. <more error messages>".
Please refer to the picture testdynamicforecolor-vfpa.png:
2. CAUSE:
There are some BUGs in the following code.
3. RESOLUTION:
We can write some code to fix the BUG.
Fun519682 :: ; proc near
push ebp ;0x00519682 : 55
lea ebp , dword ptr [ esp + 0FFFFFDD4h ] ;0x00519683 : 8dac24d4fdffff
;
; ---------------------------------------------------------------------------------------
; VFP 9.0 FIX - DISPLAY MORE ERROR MESSAGES FOR THE ERROR EXPRESSION IS INVALID
; March 2023
; ---------------------------------------------------------------------------------------
; CCB
;
; In vfp9, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property".
; In VFP Advanced, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property. <more error messages>".
;
; 2023/3/18, by ccb
;
; sub esp , 02B8h ;0x0051968a : 81ecb8020000
sub esp , 02C8h ;0x0051968a : 81ecb8020000
xor eax , eax
mov dword ptr [ ebp - 09Ch ][00h] , eax ;; vfpa_invalidexpression_ppcode.
mov dword ptr [ ebp - 09Ch ][04h] , eax ;; vfpa_invalidexpression_ppcode_old.
mov dword ptr [ ebp - 09Ch ][08h] , eax
mov dword ptr [ ebp - 09Ch ][0Ch] , eax
mov eax , dword ptr [ Data937090 ] ;0x00519690 : a190709300
mov dword ptr [ ebp + 0228h ] , eax ;0x00519695 : 898528020000
mov eax , dword ptr [ Data9370f8 ] ;0x0051969b : a1f8709300
mov eax , dword ptr [eax] ;0x005196a0 : 8b00
mov ecx , dword ptr [ eax + 0158h ] ;0x005196a2 : 8b8858010000
mov eax , dword ptr [ eax + 24 ] ;0x005196a8 : 8b4018
push ebx ;0x005196ab : 53
push esi ;0x005196ac : 56
mov esi , dword ptr [ ebp + 023Ch ] ;0x005196ad : 8bb53c020000
push edi ;0x005196b3 : 57
mov edi , dword ptr [ ebp + 0234h ] ;0x005196b4 : 8bbd34020000
mov dword ptr [ ebp + 0 ] , eax ;0x005196ba : 894500
mov eax , dword ptr [ edi + 06D0h ] ;0x005196bd : 8b87d0060000
mov dword ptr [ ebp + 12 ] , eax ;0x005196c3 : 89450c
mov eax , dword ptr [ esi + 0120h ] ;0x005196c6 : 8b8620010000
test eax , eax ;0x005196cc : 85c0
mov dword ptr [ ebp - 8 ] , ecx ;0x005196ce : 894df8
mov ecx , dword ptr [ edi + 12 ] ;0x005196d1 : 8b4f0c
mov dword ptr [ ebp + 4 ] , ecx ;0x005196d4 : 894d04
je Label5196ec ;0x005196d7 : 7413
mov edx , dword ptr [ Data9388dc ] ;0x005196d9 : 8b15dc889300
lea eax , dword ptr [ eax + 4 * eax ] ;0x005196df : 8d0480
shl eax , 05h ;0x005196e2 : c1e005
test byte ptr [ eax + edx + 48 ] , 02h ;0x005196e5 : f644103002
jne Label51970a ;0x005196ea : 751e
Label5196ec ::
test ecx , ecx ;0x005196ec : 85c9
je Label51970a ;0x005196ee : 741a
mov eax , dword ptr [ ebp + 0240h ] ;0x005196f0 : 8b8540020000
lea eax , dword ptr [ esi + 4 * eax + 112 ] ;0x005196f6 : 8d448670
mov ebx , dword ptr [eax] ;0x005196fa : 8b18
test ebx , ebx ;0x005196fc : 85db
mov dword ptr [ ebp + 8 ] , eax ;0x005196fe : 894508
mov dword ptr [ ebp - 12 ] , ebx ;0x00519701 : 895df4
jne Label452466 ;0x00519704 : 0f855c8df3ff
Label51970a ::
xor eax , eax ;0x0051970a : 33c0
Label51970c ::
;
; ---------------------------------------------------------------------------------------
; VFP 9.0 FIX - DISPLAY MORE ERROR MESSAGES FOR THE ERROR EXPRESSION IS INVALID
; March 2023
; ---------------------------------------------------------------------------------------
; CCB
;
; In vfp9, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property".
; In VFP Advanced, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property. <more error messages>".
;
; 2023/3/18, by ccb
;
; lea esp , dword ptr [ ebp + 0FFFFFF68h ] ;0x0051970c : 8da568ffffff
lea esp , dword ptr [ ebp + 0FFFFFF68h ][-10h] ;0x0051970c : 8da568ffffff
mov ecx , dword ptr [ ebp + 0228h ] ;0x00519712 : 8b8d28020000
call Fun42bf1d ;0x00519718 : e80028f1ff
pop edi ;0x0051971d : 5f
pop esi ;0x0051971e : 5e
pop ebx ;0x0051971f : 5b
add ebp , 022Ch ;0x00519720 : 81c52c020000
leave ;0x00519726 : c9
ret 014h ;0x00519727 : c21400
Label452466 ::
cmp ebx , 01h ;0x00452466 : 83fb01
mov eax , dword ptr [ edi + 8 ] ;0x00452469 : 8b4708
mov dword ptr [ ebp + 20 ] , eax ;0x0045246c : 894514
je Label56b85a ;0x0045246f : 0f84e5931100
xor eax , eax ;0x00452475 : 33c0
call Fun42c118 ;0x00452477 : e89c9cfdff
mov eax , esp ;0x0045247c : 8bc4
sub eax , dword ptr [ Data9370c4 ] ;0x0045247e : 2b05c4709300
cmp eax , ebx ;0x00452484 : 3bc3
jle Label56b86f ;0x00452486 : 0f8ee3931100
mov eax , ebx ;0x0045248c : 8bc3
add eax , 07h ;0x0045248e : 83c007
and eax , 0FFFFFFF8h ;0x00452491 : 83e0f8
call Fun42c118 ;0x00452494 : e87f9cfdff
mov dword ptr [ ebp + 24 ] , esp ;0x00452499 : 896518
Label45249c ::
cmp dword ptr [ ebp + 24 ] , 00h ;0x0045249c : 837d1800
mov ebx , 0134h ;0x004524a0 : bb34010000
je Label56b878 ;0x004524a5 : 0f84cd931100
xor eax , eax ;0x004524ab : 33c0
call Fun42c118 ;0x004524ad : e8669cfdff
mov eax , dword ptr [ edi + 0524h ] ;0x004524b2 : 8b8724050000
mov ecx , esp ;0x004524b8 : 8bcc
sub ecx , dword ptr [ Data9370c4 ] ;0x004524ba : 2b0dc4709300
shl eax , 02h ;0x004524c0 : c1e002
cmp ecx , eax ;0x004524c3 : 3bc8
jle Label56b87f ;0x004524c5 : 0f8eb4931100
add eax , 07h ;0x004524cb : 83c007
and eax , 0FFFFFFF8h ;0x004524ce : 83e0f8
call Fun42c118 ;0x004524d1 : e8429cfdff
mov dword ptr [ ebp + 16 ] , esp ;0x004524d6 : 896510
Label4524d9 ::
cmp dword ptr [ ebp + 16 ] , 00h ;0x004524d9 : 837d1000
je Label56b888 ;0x004524dd : 0f84a5931100
mov eax , dword ptr [ ebp + 0240h ] ;0x004524e3 : 8b8540020000
mov ecx , dword ptr [ esi + 4 * eax + 40 ] ;0x004524e9 : 8b4c8628
mov edx , dword ptr [ ebp + 24 ] ;0x004524ed : 8b5518
mov eax , edi ;0x004524f0 : 8bc7
call Fun51980c ;0x004524f2 : e815730c00
mov ebx , dword ptr [ ebp + 8 ] ;0x004524f7 : 8b5d08
xor eax , eax ;0x004524fa : 33c0
inc eax ;0x004524fc : 40
mov dword ptr [ebx] , eax ;0x004524fd : 8903
test byte ptr [ esi + 012Eh ] , 02h ;0x004524ff : f6862e01000002
push eax ;0x00452506 : 50
jne Label56b88f ;0x00452507 : 0f8582931100
mov ecx , dword ptr [ edi + 12 ] ;0x0045250d : 8b4f0c
Label452510 ::
call Fun52da49 ;0x00452510 : e834b50d00
mov eax , dword ptr [ Data9393ac ] ;0x00452515 : a1ac939300
mov dword ptr [ ebp - 20 ] , eax ;0x0045251a : 8945ec
mov eax , dword ptr [ ebp + 24 ] ;0x0045251d : 8b4518
mov dword ptr [ Data9393ac ] , eax ;0x00452520 : a3ac939300
mov eax , esi ;0x00452525 : 8bc6
sub eax , edi ;0x00452527 : 2bc7
xor edx , edx ;0x00452529 : 33d2
sub eax , 0740h ;0x0045252b : 2d40070000
mov ecx , 0158h ;0x00452530 : b958010000
div ecx ;0x00452535 : f7f1
lea ecx , dword ptr [ ebp - 24 ] ;0x00452537 : 8d4de8
push ecx ;0x0045253a : 51
lea ecx , dword ptr [ ebp + 28 ] ;0x0045253b : 8d4d1c
push ecx ;0x0045253e : 51
push edi ;0x0045253f : 57
lea edx , dword ptr [ ebp - 28 ] ;0x00452540 : 8d55e4
lea ecx , dword ptr [ ebp - 16 ] ;0x00452543 : 8d4df0
call Fun4521b6 ;0x00452546 : e86bfcffff
inc dword ptr [ edi + 0104h ] ;0x0045254b : ff8704010000
xor esi , esi ;0x00452551 : 33f6
cmp dword ptr [ edi + 12 ] , esi ;0x00452553 : 39770c
je Label452560 ;0x00452556 : 7408
push dword ptr [ ebp + 16 ] ;0x00452558 : ff7510
call Fun519c4f ;0x0045255b : e8ef760c00
Label452560 ::
mov eax , dword ptr [ Data9370f8 ] ;0x00452560 : a1f8709300
mov ecx , dword ptr [ ebp + 12 ] ;0x00452565 : 8b4d0c
cmp ecx , esi ;0x00452568 : 3bce
mov dword ptr [ebx] , esi ;0x0045256a : 8933
mov eax , dword ptr [eax] ;0x0045256c : 8b00
mov dword ptr [ eax + 0158h ] , esi ;0x0045256e : 89b058010000
je Label452584 ;0x00452574 : 740e
mov eax , dword ptr [ Data93e77c ] ;0x00452576 : a17ce79300
mov dword ptr [ Data93e77c ] , ecx ;0x0045257b : 890d7ce79300
mov dword ptr [ ebp - 32 ] , eax ;0x00452581 : 8945e0
Label452584 ::
;
; ---------------------------------------------------------------------------------------
; VFP 9.0 FIX - DISPLAY MORE ERROR MESSAGES FOR THE ERROR EXPRESSION IS INVALID
; March 2023
; ---------------------------------------------------------------------------------------
; CCB
;
; In vfp9, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property".
; In VFP Advanced, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property. <more error messages>".
;
; 2023/3/18, by ccb
;
mov eax , dword ptr [ ebp + 0238h ]
mov byte ptr [eax] , 043h
mov dword ptr [ eax + 04h ] , 00h
mov dword ptr [ eax + 08h ] , 00h
mov byte ptr [ eax + 2Ch ] , 00h
mov eax , dword ptr [ Data9393ac ]
mov dword ptr [ ebp - 09Ch ][00h] , eax
mov dword ptr vfpa_invalidexpression_errornumber,00h
mov byte ptr vfpa_invalidexpression_errormessage,00h
mov byte ptr vfpa_invalidexpression_errorsource,00h
mov byte ptr vfpa_invalidexpression_errortext,00h
lea edx , dword ptr [ ebp + 8 ] ;0x00452584 : 8d5508
lea eax , dword ptr [ ebp + 0FFFFFF78h ] ;0x00452587 : 8d8578ffffff
call Fun42c27f ;0x0045258d : e8ed9cfdff
push esi ;0x00452592 : 56
push eax ;0x00452593 : 50
call Fun42c2be ;0x00452594 : e8259dfdff
pop ecx ;0x00452599 : 59
cmp eax , esi ;0x0045259a : 3bc6
mov esi , dword ptr [ ebp + 0238h ] ;0x0045259c : 8bb538020000
pop ecx ;0x004525a2 : 59
mov dword ptr [ ebp + 24 ] , eax ;0x004525a3 : 894518
jne Label4525bf ;0x004525a6 : 7517
mov eax , dword ptr [ Data9393ac ] ;0x004525a8 : a1ac939300
cmp byte ptr [eax] , 0FCh ;0x004525ad : 8038fc
jne Label56b896 ;0x004525b0 : 0f85e0921100
push esi ;0x004525b6 : 56
pushd 08h ;0x004525b7 : 6a08
pop ebx ;0x004525b9 : 5b
call Fun52a938 ;0x004525ba : e879830d00
Label4525bf ::
lea eax , dword ptr [ ebp + 8 ] ;0x004525bf : 8d4508
push eax ;0x004525c2 : 50
lea eax , dword ptr [ ebp + 0FFFFFF78h ] ;0x004525c3 : 8d8578ffffff
call Fun42d200 ;0x004525c9 : e832acfdff
;
; ---------------------------------------------------------------------------------------
; VFP 9.0 FIX - DISPLAY MORE ERROR MESSAGES FOR THE ERROR EXPRESSION IS INVALID
; March 2023
; ---------------------------------------------------------------------------------------
; CCB
;
; In vfp9, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property".
; In VFP Advanced, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property. <more error messages>".
;
; 2023/3/18, by ccb
;
cmp dword ptr vfpa_sys9124_data,0FFFFFFFFh
je Label4525ce
cmp dword ptr vfpa_sys9124_data,00h
je Label4525ce
mov eax , dword ptr [ ebp + 24 ]
cmp eax,00h
je Label4525ce
mov dword ptr vfpa_invalidexpression_errornumber,eax
mov byte ptr vfpa_invalidexpression_errormessage,00h
mov byte ptr vfpa_invalidexpression_errorsource,00h
mov byte ptr vfpa_invalidexpression_errortext,00h
push 0F0h
lea eax,byte ptr vfpa_invalidexpression_errormessage
mov byte ptr [eax],20h
inc eax
push eax
push dword ptr vfpa_invalidexpression_errornumber
call vfpa_geterrormessage
mov eax , dword ptr [ ebp - 09Ch ][00h]
cmp byte ptr [eax] , 0FCh
jne Label4525ce
mov eax , dword ptr [ Data9393ac ]
mov dword ptr [ ebp - 09Ch ][04h] , eax
mov eax , dword ptr [ ebp - 09Ch ][00h]
mov dword ptr [ Data9393ac ] , eax
lea ecx,byte ptr vfpa_invalidexpression_errorsource
mov byte ptr [ecx],20h
inc ecx
mov edx , 01F0h
push 01h
push edx
push ecx
call vfpa_geterrorsource
mov eax , dword ptr [ ebp - 09Ch ][04h]
mov dword ptr [ Data9393ac ] , eax
Label4525ce ::
mov ebx , dword ptr [ ebp + 12 ] ;0x004525ce : 8b5d0c
test ebx , ebx ;0x004525d1 : 85db
je Label4525dd ;0x004525d3 : 7408
mov eax , dword ptr [ ebp - 32 ] ;0x004525d5 : 8b45e0
mov dword ptr [ Data93e77c ] , eax ;0x004525d8 : a37ce79300
Label4525dd ::
cmp dword ptr [ ebp + 24 ] , 00h ;0x004525dd : 837d1800
mov eax , dword ptr [ Data9370f8 ] ;0x004525e1 : a1f8709300
mov eax , dword ptr [eax] ;0x004525e6 : 8b00
mov ecx , dword ptr [ ebp - 8 ] ;0x004525e8 : 8b4df8
mov dword ptr [ eax + 0158h ] , ecx ;0x004525eb : 898858010000
mov eax , dword ptr [ ebp + 023Ch ] ;0x004525f1 : 8b853c020000
mov ecx , dword ptr [ ebp + 0240h ] ;0x004525f7 : 8b8d40020000
lea edi , dword ptr [ eax + 4 * ecx + 112 ] ;0x004525fd : 8d7c8870
mov eax , dword ptr [ ebp - 20 ] ;0x00452601 : 8b45ec
mov dword ptr [edi] , 01h ;0x00452604 : c70701000000
mov dword ptr [ Data9393ac ] , eax ;0x0045260a : a3ac939300
jne Label56b8b4 ;0x0045260f : 0f859f921100
Label452615 ::
mov al , byte ptr [esi] ;0x00452615 : 8a06
cmp al , 04Dh ;0x00452617 : 3c4d
je Label56b914 ;0x00452619 : 0f84f5921100
cmp al , 057h ;0x0045261f : 3c57
je Label56b92b ;0x00452621 : 0f8404931100
Label452627 ::
push dword ptr [ ebp - 16 ] ;0x00452627 : ff75f0
mov ecx , dword ptr [ ebp - 28 ] ;0x0045262a : 8b4de4
lea eax , dword ptr [ ebp + 28 ] ;0x0045262d : 8d451c
push eax ;0x00452630 : 50
mov eax , dword ptr [ ebp - 24 ] ;0x00452631 : 8b45e8
call Fun452422 ;0x00452634 : e8e9fdffff
mov eax , dword ptr [ ebp + 4 ] ;0x00452639 : 8b4504
test eax , eax ;0x0045263c : 85c0
je Label56b957 ;0x0045263e : 0f8413931100
test byte ptr [ eax + 16 ] , 020h ;0x00452644 : f6401020
je Label56b957 ;0x00452648 : 0f8409931100
mov ecx , ebx ;0x0045264e : 8bcb
call Fun53eaa2 ;0x00452650 : e84dc40e00
test eax , eax ;0x00452655 : 85c0
je Label56b961 ;0x00452657 : 0f8404931100
mov ecx , dword ptr [ Data9388dc ] ;0x0045265d : 8b0ddc889300
lea eax , dword ptr [ ebx + 4 * ebx ] ;0x00452663 : 8d049b
shl eax , 05h ;0x00452666 : c1e005
mov eax , dword ptr [ eax + ecx + 108 ] ;0x00452669 : 8b44086c
cmp eax , dword ptr [ ebp + 20 ] ;0x0045266d : 3b4514
jne Label56b961 ;0x00452670 : 0f85eb921100
mov ecx , dword ptr [ ebp + 0 ] ;0x00452676 : 8b4d00
call Fun52a6f6 ;0x00452679 : e878800d00
mov eax , dword ptr [ ebp + 20 ] ;0x0045267e : 8b4514
mov ebx , dword ptr [eax] ;0x00452681 : 8b18
call Fun519640 ;0x00452683 : e8b86f0c00
dec dword ptr [ ebx + 0104h ] ;0x00452688 : ff8b04010000
cmp dword ptr [ ebp + 0240h ] , 00h ;0x0045268e : 83bd4002000000
mov eax , dword ptr [ ebp - 12 ] ;0x00452695 : 8b45f4
mov dword ptr [edi] , eax ;0x00452698 : 8907
je Label56b96b ;0x0045269a : 0f84cb921100
Label4526a0 ::
push dword ptr [ ebp + 16 ] ;0x004526a0 : ff7510
call Fun519a5f ;0x004526a3 : e8b7730c00
call Fun43e4fe ;0x004526a8 : e851befeff
test eax , eax ;0x004526ad : 85c0
jne Label56b97c ;0x004526af : 0f85c7921100
Label4526b5 ::
xor eax , eax ;0x004526b5 : 33c0
cmp dword ptr [ ebp + 24 ] , eax ;0x004526b7 : 394518
jne Label56b986 ;0x004526ba : 0f85c6921100
Label4526c0 ::
xor eax , eax ;0x004526c0 : 33c0
inc eax ;0x004526c2 : 40
jmp Label51970c ;0x004526c3 : e944700c00
Label56b85a ::
pushd 00h ;0x0056b85a : 6a00
xor edx , edx ;0x0056b85c : 33d2
mov ecx , edi ;0x0056b85e : 8bcf
call Fun51eadb ;0x0056b860 : e87632fbff
mov ecx , 0A4h ;0x0056b865 : b9a4000000
call Fun544742 ;0x0056b86a : e8d38efdff
Label56b86f ::
and dword ptr [ ebp + 24 ] , 00h ;0x0056b86f : 83651800
jmp Label45249c ;0x0056b873 : e9246ceeff
Label56b878 ::
mov ecx , ebx ;0x0056b878 : 8bcb
call Fun544742 ;0x0056b87a : e8c38efdff
Label56b87f ::
and dword ptr [ ebp + 16 ] , 00h ;0x0056b87f : 83651000
jmp Label4524d9 ;0x0056b883 : e9516ceeff
Label56b888 ::
mov ecx , ebx ;0x0056b888 : 8bcb
call Fun544742 ;0x0056b88a : e8b38efdff
Label56b88f ::
mov ecx , dword ptr [esi] ;0x0056b88f : 8b0e
jmp Label452510 ;0x0056b891 : e97a6ceeff
Label56b896 ::
pushd 0FFFFFFFFh ;0x0056b896 : 6aff
mov edx , 01000h ;0x0056b898 : ba00100000
lea ecx , dword ptr [ ebp - 56 ] ;0x0056b89d : 8d4dc8
call Fun421184 ;0x0056b8a0 : e8df58ebff
lea edx , dword ptr [ ebp - 56 ] ;0x0056b8a5 : 8d55c8
mov eax , esi ;0x0056b8a8 : 8bc6
call Fun4503a9 ;0x0056b8aa : e8fa4aeeff
jmp Label4525bf ;0x0056b8af : e90b6deeff
Label56b8b4 ::
cmp dword ptr [ ebp + 0244h ] , 00h ;0x0056b8b4 : 83bd4402000000
je Label452615 ;0x0056b8bb : 0f84546deeff
mov eax , dword ptr [ ebp + 4 ] ;0x0056b8c1 : 8b4504
test eax , eax ;0x0056b8c4 : 85c0
je Label56b90c ;0x0056b8c6 : 7444
test byte ptr [ eax + 16 ] , 020h ;0x0056b8c8 : f6401020
je Label56b90c ;0x0056b8cc : 743e
mov ecx , ebx ;0x0056b8ce : 8bcb
call Fun53eaa2 ;0x0056b8d0 : e8cd31fdff
test eax , eax ;0x0056b8d5 : 85c0
je Label56b90c ;0x0056b8d7 : 7433
mov ecx , dword ptr [ Data9388dc ] ;0x0056b8d9 : 8b0ddc889300
mov edx , dword ptr [ ebp + 20 ] ;0x0056b8df : 8b5514
lea eax , dword ptr [ ebx + 4 * ebx ] ;0x0056b8e2 : 8d049b
shl eax , 05h ;0x0056b8e5 : c1e005
cmp dword ptr [ eax + ecx + 108 ] , edx ;0x0056b8e8 : 3954086c
jne Label56b90c ;0x0056b8ec : 751e
mov ecx , dword ptr [ ebp + 0 ] ;0x0056b8ee : 8b4d00
call Fun52a6f6 ;0x0056b8f1 : e800eefbff
mov eax , dword ptr [ ebp + 20 ] ;0x0056b8f6 : 8b4514
call Fun519640 ;0x0056b8f9 : e842ddfaff
mov eax , dword ptr [ ebp + 20 ] ;0x0056b8fe : 8b4514
mov ecx , dword ptr [eax] ;0x0056b901 : 8b08
pushd 00h ;0x0056b903 : 6a00
xor edx , edx ;0x0056b905 : 33d2
call Fun51eadb ;0x0056b907 : e8cf31fbff
Label56b90c ::
mov ecx , dword ptr [ ebp + 24 ] ;0x0056b90c : 8b4d18
call Fun544742 ;0x0056b90f : e82e8efdff
Label56b914 ::
lea eax , dword ptr [ esi + 44 ] ;0x0056b914 : 8d462c
push eax ;0x0056b917 : 50
mov ebx , 0FFh ;0x0056b918 : bbff000000
call Fun43627b ;0x0056b91d : e859a9ecff
and dword ptr [ esi + 4 ] , 00h ;0x0056b922 : 83660400
mov byte ptr [esi] , 043h ;0x0056b926 : c60643
jmp Label56b943 ;0x0056b929 : eb18
Label56b92b ::
lea eax , dword ptr [ esi + 44 ] ;0x0056b92b : 8d462c
push eax ;0x0056b92e : 50
mov ebx , 0FFh ;0x0056b92f : bbff000000
call Fun43627b ;0x0056b934 : e842a9ecff
mov byte ptr [esi] , 051h ;0x0056b939 : c60651
mov dword ptr [ esi + 4 ] , 01h ;0x0056b93c : c7460401000000
Label56b943 ::
mov eax , dword ptr [ esi + 12 ] ;0x0056b943 : 8b460c
cmp eax , ebx ;0x0056b946 : 3bc3
jle Label56b94c ;0x0056b948 : 7e02
mov eax , ebx ;0x0056b94a : 8bc3
Label56b94c ::
mov ebx , dword ptr [ ebp + 12 ] ;0x0056b94c : 8b5d0c
mov dword ptr [ esi + 8 ] , eax ;0x0056b94f : 894608
jmp Label452627 ;0x0056b952 : e9d06ceeff
Label56b957 ::
mov ecx , 0A3h ;0x0056b957 : b9a3000000
call Fun544742 ;0x0056b95c : e8e18dfdff
Label56b961 ::
mov ecx , 0A4h ;0x0056b961 : b9a4000000
call Fun544742 ;0x0056b966 : e8d78dfdff
Label56b96b ::
movzx eax ,byte ptr [esi] ;0x0056b96b : 0fb606
mov ecx , dword ptr [ ebp + 023Ch ] ;0x0056b96e : 8b8d3c020000
mov dword ptr [ ecx + 8 ] , eax ;0x0056b974 : 894108
jmp Label4526a0 ;0x0056b977 : e9246deeff
Label56b97c ::
call Fun901c42 ;0x0056b97c : e8c1623900
jmp Label4526b5 ;0x0056b981 : e92f6deeff
Label56b986 ::
cmp dword ptr [ ebp + 0244h ] , eax ;0x0056b986 : 398544020000
jne Label4526c0 ;0x0056b98c : 0f852e6deeff
mov esi , dword ptr [ ebp + 0240h ] ;0x0056b992 : 8bb540020000
mov dword ptr [edi] , eax ;0x0056b998 : 8907
mov edi , dword ptr [ ebp + 023Ch ] ;0x0056b99a : 8bbd3c020000
mov eax , dword ptr [ edi + 4 * esi + 40 ] ;0x0056b9a0 : 8b44b728
cmp eax , 0FFFFFFFFh ;0x0056b9a4 : 83f8ff
je Label56b9ca ;0x0056b9a7 : 7421
test byte ptr [ edi + 012Eh ] , 020h ;0x0056b9a9 : f6872e01000020
push eax ;0x0056b9b0 : 50
je Label56b9bb ;0x0056b9b1 : 7408
mov eax , dword ptr [ ebx + 0134h ] ;0x0056b9b3 : 8b8334010000
jmp Label56b9c0 ;0x0056b9b9 : eb05
Label56b9bb ::
mov eax , dword ptr [ Data93d290 ] ;0x0056b9bb : a190d29300
Label56b9c0 ::
call Fun43ed40 ;0x0056b9c0 : e87b33edff
or dword ptr [ edi + 4 * esi + 40 ] , 0FFFFFFFFh ;0x0056b9c5 : 834cb728ff
Label56b9ca ::
mov ecx , dword ptr [ 4 * esi + offset Data945508 ] ;0x0056b9ca : 8b0cb508559400
test ecx , ecx ;0x0056b9d1 : 85c9
je Label56b9f6 ;0x0056b9d3 : 7421
mov eax , dword ptr [ edi + 0120h ] ;0x0056b9d5 : 8b8720010000
test eax , eax ;0x0056b9db : 85c0
je Label56b9f6 ;0x0056b9dd : 7417
push eax ;0x0056b9df : 50
mov bx , 0Ch ;0x0056b9e0 : 66bb0c00
mov esi , ecx ;0x0056b9e4 : 8bf1
call Fun5075ad ;0x0056b9e6 : e8c2bbf9ff
call Fun73f215 ;0x0056b9eb : e825381d00
mov esi , dword ptr [ ebp + 0240h ] ;0x0056b9f0 : 8bb540020000
Label56b9f6 ::
pushd 00h ;0x0056b9f6 : 6a00
lea eax , dword ptr [ ebp + 011Ch ] ;0x0056b9f8 : 8d851c010000
push eax ;0x0056b9fe : 50
pushd 02F7h ;0x0056b9ff : 68f7020000
call Fun4ce6c0 ;0x0056ba04 : e8b72cf6ff
;
; ---------------------------------------------------------------------------------------
; VFP 9.0 FIX - DISPLAY MORE ERROR MESSAGES FOR THE ERROR EXPRESSION IS INVALID
; March 2023
; ---------------------------------------------------------------------------------------
; CCB
;
; In vfp9, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property".
; In VFP Advanced, if the expression you entered for a grid property is not valid,
; it will display the error message "Expression is invalid. Use a valid expression for name property. <more error messages>".
;
; 2023/3/18, by ccb
;
cmp dword ptr vfpa_sys9124_data,0FFFFFFFFh
je Label51970a
cmp dword ptr vfpa_sys9124_data,00h
je Label56ba09
cmp dword ptr vfpa_invalidexpression_errornumber,00h
je Label56ba09
mov eax , 01h
mov ecx , dword ptr [ Data937794 ]
test ecx , ecx
je Label56ba19
lea eax , dword ptr [ ebp + 011Ch ]
push eax
lea eax,byte ptr vfpa_invalidexpression_errortext
push eax
call lstrcpyA
lea eax,byte ptr vfpa_invalidexpression_errormessage
push eax
lea eax,byte ptr vfpa_invalidexpression_errortext
push eax
call lstrcatA
lea eax,byte ptr vfpa_invalidexpression_errorsource
push eax
lea eax,byte ptr vfpa_invalidexpression_errortext
push eax
call lstrcatA
pushd 00h
pushd 01h
lea eax,byte ptr vfpa_invalidexpression_errortext
push eax
call Fun6da3d3
jmp Label56ba19
Label56ba09 ::
pushd 00h ;0x0056ba09 : 6a00
pushd 01h ;0x0056ba0b : 6a01
lea eax , dword ptr [ ebp + 011Ch ] ;0x0056ba0d : 8d851c010000
push eax ;0x0056ba13 : 50
call Fun6da3d3 ;0x0056ba14 : e8bae91600
Label56ba19 ::
cmp eax , 01h ;0x0056ba19 : 83f801
je Label51970a ;0x0056ba1c : 0f84e8dcfaff
xor eax , eax ;0x0056ba22 : 33c0
inc eax ;0x0056ba24 : 40
mov ecx , esi ;0x0056ba25 : 8bce
shl eax , cl ;0x0056ba27 : d3e0
and eax , 03FFFFh ;0x0056ba29 : 25ffff0300
or dword ptr [ edi + 0B8h ] , eax ;0x0056ba2e : 0987b8000000
jmp Label51970a ;0x0056ba34 : e9d1dcfaff
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_vfp9fix253.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix263.asp
http://www.baiyujia.com/vfpdocuments/f_vfp9fix264.asp
2, foxite.com:
https://www.foxite.com/archives/dynamicback-colour-0000386155.htm
https://www.foxite.com/archives/dynamicbackcolor-0000159922.htm
https://www.foxite.com/archives/grid-expression-invalid-0000181090.htm
https://www.foxite.com/archives/grid-dynamicbackcolors-error-0000419030.htm
https://www.foxite.com/archives/color-grid-cell-dynamic-columns-0000376645.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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