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[ENHANCED] VFP 9.0 FIX - MAXIMIZE THE REPORT PREVIEW WINDOW AUTOMATICALLY
January 2026
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CCB
1. BUG:
In vfp9 (and vfp6, vfp7, vfp8), it will ALWAYS show the report preview window in its current size and position.
2. CAUSE:
There are some BUGs in the following code.
3. RESOLUTION:
We can write some code to fix the BUG.
Label492880 ::
mov eax , dword ptr [ ebp + 018Ch ] ;0x00492880 : 8b858c010000
mov dword ptr [ ebp - 112 ] , eax ;0x00492886 : 894590
mov eax , dword ptr [ ebp + 0188h ] ;0x00492889 : 8b8588010000
xor edx , edx ;0x0049288f : 33d2
lea ecx , dword ptr [ ebp - 128 ] ;0x00492891 : 8d4d80
mov dword ptr [ ebp - 108 ] , edi ;0x00492894 : 897d94
mov dword ptr [ ebp - 44 ] , eax ;0x00492897 : 8945d4
mov dword ptr [ ebp - 104 ] , 08Ch ;0x0049289a : c745988c000000
mov dword ptr [ ebp - 100 ] , 0B4h ;0x004928a1 : c7459cb4000000
call Fun42ef1e ;0x004928a8 : e871c6f9ff
mov esi , eax ;0x004928ad : 8bf0
test esi , esi ;0x004928af : 85f6
je Label55d3e3 ;0x004928b1 : 0f842cab0c00
;
; ------------------------------------------------------------------------
; VFP 9.0 FIX - MAXIMIZE THE REPORT PREVIEW WINDOW AUTOMATICALLY
; October 2018
; ------------------------------------------------------------------------
; CCB
;
; In vfp9, it will ALWAYS show the report preview window in its current size and position.
; In VFP Advanced, it can enable or disable maximize the report preview window automatically.
;
; 2018/10/14, by ccb
;
cmp dword ptr vfpa_report_isreportform,00h
je Label4928b7
cmp byte ptr [ Data93c280 ] , 05Ah
jae Label4928b7
mov ecx , dword ptr [eax]
mov ecx , dword ptr [ecx]
mov dword ptr vfpa_maximizereport_hwnd,ecx
Label4928b7 ::
mov dword ptr [ ebx + 12 ] , esi ;0x004928b7 : 89730c
mov dword ptr [ ebx + 8 ] , esi ;0x004928ba : 897308
call Fun544102 ;0x004928bd : e840180b00
test eax , eax ;0x004928c2 : 85c0
mov edi , offset Label62699c ;0x004928c4 : bf9c696200
je Label4928d0 ;0x004928c9 : 7405
mov eax , dword ptr [eax] ;0x004928cb : 8b00
mov dword ptr [ eax + 28 ] , edi ;0x004928cd : 89781c
Now In VFP Advanced, it can enable or disable maximize the report preview window automatically.
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_vfp9fix54.asp
2, microsoft.com:
https://social.msdn.microsoft.com/forums/en-US/be708920-dc67-4eae-81e5-94348c4b046d/how-to-get-the-report-preview-in-full-screen-
3, foxite.com:
https://www.foxite.com/archives/how-to-maximize-report-window-0000272164.htm
https://www.foxite.com/archives/report-maximize-0000320497.htm
4, narkive.com:
https://microsoft.public.fox.helpwanted.narkive.com/pJgPB3g8/how-to-set-the-default-report-preview-window-size
5, experts-exchange.com:
https://www.experts-exchange.com/questions/25812148/Report-Listner-for-VFP-9.html
6, tek-tips.com:
https://www.tek-tips.com/viewthread.cfm?qid=851476
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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