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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>I hope someone can help. I’m using the freeware TNT controls with D7 for a TTntListView component. This is working fine for many users but one user experiences a crash when simply using the keyboard to move up and down the listview. He is using Win8 64-bit as I do here, but I can’t duplicate it.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>It is a virtual listview using OnData. Here is a portion of a MadExcept log. Can provide more if required.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>exception message : Access violation at address 0050DA73 in module 'SPLStudio.exe'. Write of address 00000000.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>main thread ($d88):<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>0050da73 SPLStudio.exe TntWideStrUtils 180 +10 WStrLCopy<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>0053e20e SPLStudio.exe TntComCtrls 2104 +46 TTntCustomListView.CNNotify<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>004f304f SPLStudio.exe Controls 4645 +53 TControl.WndProc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>004f6d5e SPLStudio.exe Controls 6342 +33 TWinControl.WndProc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>004c04a5 SPLStudio.exe ComCtrls 14815 +12 TCustomListView.WndProc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>0053dee4 SPLStudio.exe TntComCtrls 2023 +98 TTntCustomListView.WndProc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>00539335 SPLStudio.exe TntControls 666 +19 TWinControlTrap.WindowProc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>004f2d5a SPLStudio.exe Controls 4552 +5 TControl.Perform<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>004f6f20 SPLStudio.exe Controls 6388 +6 DoControlMsg<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>004f772f SPLStudio.exe Controls 6579 +1 TWinControl.WMNotify<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>...<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Code in TntComCtrls.pas where it crashes updating a list item caption...</span><span style='font-size:10.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> // handle any text info<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> with PLVDispInfoW(NMHdr)^.item do<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> begin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> if (mask and LVIF_TEXT) <> 0 then<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> begin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> Item := GetItemW(PLVDispInfoW(NMHdr)^.item);<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> if iSubItem = 0 then<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>>>>>> WStrLCopy(pszText, PWideChar(Item.Caption), cchTextMax - 1)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> else begin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> with Item.SubItems do begin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> if iSubItem <= Count then<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> WStrLCopy(pszText, PWideChar(Strings[iSubItem - 1]), cchTextMax - 1)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> else pszText[0] := #0;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> end;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> end;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> end;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> end;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Any ideas appreciated.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Ross,<o:p></o:p></span></p></div></body></html>