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D 2007 - TDBCtrlGrid - Canvas painting not allowed

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Bernhard Roos

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May 4, 2007, 2:48:19 AM5/4/07
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Hello,
I get the exception "Canvas painting not allowed" if the user want to
scroll in the Control Grid.
Is this a known problem?
Best wishes
Bernhard

Bernhard Roos

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May 4, 2007, 3:09:45 AM5/4/07
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Bernhard Roos schrieb:

This is the callstack :

date/time : 2007-05-04, 08:49:15, 64ms
computer name : PC47
user name : Administrator <admin>
registered owner : HeiBa GmbH / HeiBa GmbH operating system : Windows
XP Service Pack 2 build 2600
system language : German
system up time : 13 minutes 38 seconds
program up time : 8 minutes 26 seconds
processor : AMD Athlon(tm) XP 1700+
physical memory : 559/1023 MB (free/total)
free disk space : (C:) 25,96 GB
display mode : 1280x1024, 32 bit
process id : $880
allocated memory : 44,61 MB
executable : ZeitarbeitDeluxe.Exe
exec. date/time : 2007-05-03 18:40
version : 2006.100.0.566
compiled with : BCB 2006
madExcept version : 3.0d
callstack crc : $b735a57c, $db8374c7, $9f4be492
exception number : 4
exception class : EInvalidOperation
exception message : Leinwand/Bild erlaubt kein Zeichnen.

Main ($884):
0048aa40 +00040 ZeitarbeitDeluxe.Exe Graphics 2785 +8
TCanvas.RequiredState
0048a222 +00016 ZeitarbeitDeluxe.Exe Graphics 2456 +2
TCanvas.DrawFocusRect
009fec61 +00131 ZeitarbeitDeluxe.Exe DBCGrids 260 +18
TDBCtrlPanel.PaintWindow
004cb29d +00101 ZeitarbeitDeluxe.Exe Controls 7349 +19
TWinControl.PaintHandler
009fed19 +00049 ZeitarbeitDeluxe.Exe DBCGrids 285 +6
TDBCtrlPanel.WMPaint
004c70eb +002bb ZeitarbeitDeluxe.Exe Controls 5146 +83
TControl.WndProc
004cb03a +004fa ZeitarbeitDeluxe.Exe Controls 7271 +111
TWinControl.WndProc
004ca764 +0002c ZeitarbeitDeluxe.Exe Controls 7040 +3
TWinControl.MainWndProc
0048027c +00014 ZeitarbeitDeluxe.Exe Classes 11583 +8 StdWndProc
7c91eae0 +00010 ntdll.dll
KiUserCallbackDispatcher
7e36d825 +0002c USER32.dll
UpdateWindow
004cda89 +00015 ZeitarbeitDeluxe.Exe Controls 8800 +1
TWinControl.Update
009ff1a6 +0014a ZeitarbeitDeluxe.Exe DBCGrids 441 +38
TDBCtrlGrid.DataSetChanged
009feac1 +00005 ZeitarbeitDeluxe.Exe DBCGrids 217 +0
TDBCtrlGridLink.DataSetChanged
009240ad +000bd ZeitarbeitDeluxe.Exe DB 7693 +19
TDataLink.DataEvent
00924693 +0003f ZeitarbeitDeluxe.Exe DB 7965 +4
TDataSource.NotifyLinkTypes
009246c2 +0001e ZeitarbeitDeluxe.Exe DB 7972 +3
TDataSource.NotifyDataLinks
009246ef +00023 ZeitarbeitDeluxe.Exe DB 7980 +4
TDataSource.DataEvent
00928fdd +00131 ZeitarbeitDeluxe.Exe DB 10036 +36
TDataSet.DataEvent
0094d664 +0005c ZeitarbeitDeluxe.Exe nxdb 8388 +10
TnxDataset.DataEvent
00951da7 +0002b ZeitarbeitDeluxe.Exe nxdb 10524 +3
TnxIndexDataSet.DataEvent
00a1513e +0004a ZeitarbeitDeluxe.Exe SUControls 6109 +3
TSUTable.DataEvent
0092907b +0004f ZeitarbeitDeluxe.Exe DB 10065 +8
TDataSet.EnableControls
009ffc23 +001b3 ZeitarbeitDeluxe.Exe DBCGrids 730 +38
TDBCtrlGrid.Scroll
009ff352 +0012e ZeitarbeitDeluxe.Exe DBCGrids 484 +22
TDBCtrlGrid.DoKey
009ffd61 +00129 ZeitarbeitDeluxe.Exe DBCGrids 773 +34
TDBCtrlGrid.ScrollMessage
00a005dc +00000 ZeitarbeitDeluxe.Exe DBCGrids 1084 +0
TDBCtrlGrid.WMVScroll
004c70eb +002bb ZeitarbeitDeluxe.Exe Controls 5146 +83
TControl.WndProc
004cb03a +004fa ZeitarbeitDeluxe.Exe Controls 7271 +111
TWinControl.WndProc
004ca764 +0002c ZeitarbeitDeluxe.Exe Controls 7040 +3
TWinControl.MainWndProc
0048027c +00014 ZeitarbeitDeluxe.Exe Classes 11583 +8 StdWndProc
7c91eae0 +00010 ntdll.dll
KiUserCallbackDispatcher
7e36b8fe +00044 USER32.dll
SendMessageW
7e37f117 +11c29 USER32.dll
DefWindowProcA
7e36f658 +00016 USER32.dll
CallWindowProcA
004cb137 +000d7 ZeitarbeitDeluxe.Exe Controls 7301 +23
TWinControl.DefaultHandler
004ccc3d +000a1 ZeitarbeitDeluxe.Exe Controls 8220 +16
TWinControl.WMSysCommand
004c70eb +002bb ZeitarbeitDeluxe.Exe Controls 5146 +83
TControl.WndProc
004cb03a +004fa ZeitarbeitDeluxe.Exe Controls 7271 +111
TWinControl.WndProc
004ca764 +0002c ZeitarbeitDeluxe.Exe Controls 7040 +3
TWinControl.MainWndProc
0048027c +00014 ZeitarbeitDeluxe.Exe Classes 11583 +8 StdWndProc
7c91eae0 +00010 ntdll.dll
KiUserCallbackDispatcher
7e36b8fe +00044 USER32.dll
SendMessageW
7e37f117 +11c29 USER32.dll
DefWindowProcA
7e36f658 +00016 USER32.dll
CallWindowProcA
004cb137 +000d7 ZeitarbeitDeluxe.Exe Controls 7301 +23
TWinControl.DefaultHandler
004c7735 +00015 ZeitarbeitDeluxe.Exe Controls 5267 +2
TControl.WMNCLButtonDown
004c70eb +002bb ZeitarbeitDeluxe.Exe Controls 5146 +83
TControl.WndProc
004cb03a +004fa ZeitarbeitDeluxe.Exe Controls 7271 +111
TWinControl.WndProc
004ca764 +0002c ZeitarbeitDeluxe.Exe Controls 7040 +3
TWinControl.MainWndProc
0048027c +00014 ZeitarbeitDeluxe.Exe Classes 11583 +8 StdWndProc
7e3696c2 +0000a USER32.dll
DispatchMessageA
004e6344 +000fc ZeitarbeitDeluxe.Exe Forms 8015 +23
TApplication.ProcessMessage
004e637e +0000a ZeitarbeitDeluxe.Exe Forms 8034 +1
TApplication.HandleMessage
004e65d4 +000cc ZeitarbeitDeluxe.Exe Forms 8125 +23
TApplication.Run
00febf32 +00aea ZeitarbeitDeluxe.Exe ZeitarbeitDeluxe 649 +140
initialization

Bernhard Roos

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May 4, 2007, 5:36:03 AM5/4/07
to
I've solved it. It is a bug in D 2007 (which worked fine in D7).

I use a TBitBtn in a Control Panel. In OnPaintPanel I've changed the
text of the button. And this results in an exception.

Best wishes
Bernhard

Bernhard Roos schrieb:

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