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  • Temporary table resource limit

    - by Jk
    Hi, i have two applications (server and client), that uses TQuery connected with TClientDataSet through TDCOMConnection, and in some cases clientdataset opens about 300000 records and than application throws exception "Temporary table resource limit". Is there any workaround how to fix this? (except "do not open such huge dataset"?) update: oops i'm sorry there is 300K records, not 3 millions..

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  • There is another way to load MSHTML documents without use Application.ProcessMessages?

    - by douglaslise
    There is another way to load MSHTML documents without use Application.ProcessMessages? To load a document into a IHTMLDocument I need to do this: while Doc.readyState <> 'complete' do Application.ProcessMessages; I want not to process all the message queue during the loading, because I would be changing my application flow, in other words, some messages that should be processed after the loading to be completed can be processed earlier, even before the loading end. There is a special message code that the IHTMLDocument expect to advance in the loading process? Or there is another way to load? Thanks.

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  • FastMM log to file without FullDebugMode

    - by dmauric.mp
    I'd like to get FastMM memory leak report that shows up on app shutdown, but in a file instead of the dialog box. The idea is to use it in a release build as I have trouble reproducing the leaks. I would however prefer to not use the FullDebugMode which seems to be required for logging to a file. Am I missing anything or is this not supported ?

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  • Grouping on Multiple Field

    - by Nisarg Mehta
    Hi , I am generating XML file from Database as below... <?xml version = '1.0'?> <T0019> <IFTA_ACCOUNT> <IFTA_CARRIER_ID_NUMBER>705</IFTA_CARRIER_ID_NUMBER> <IFTA_LICENSE_NUMBER>631227666</IFTA_LICENSE_NUMBER> <IFTA_BASE_COUNTRY>US</IFTA_BASE_COUNTRY> <IFTA_BASE_STATE>AL</IFTA_BASE_STATE> <IFTA_STATUS_CODE>0 </IFTA_STATUS_CODE> <IFTA_STATUS_DATE>2009-01-01</IFTA_STATUS_DATE> <IFTA_ISSUE_DATE>2009-01-01</IFTA_ISSUE_DATE> <IFTA_EXPIRE_DATE>2009-12-01</IFTA_EXPIRE_DATE> <IFTA_UPDATE_DATE>2008-12-30</IFTA_UPDATE_DATE> <NAME_TYPE>LG</NAME_TYPE> <NAME>K D L TRUCKING INC</NAME> <ADDRESS_TYPE>PH</ADDRESS_TYPE> <STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1> <CITY>OHATCHEE</CITY> <STATE>AL</STATE> <ZIP_CODE>36271</ZIP_CODE> <COUNTY>CALHOUN COUNTY</COUNTY> <COUNTRY>US</COUNTRY> </IFTA_ACCOUNT> <IFTA_ACCOUNT> <IFTA_CARRIER_ID_NUMBER>705</IFTA_CARRIER_ID_NUMBER> <IFTA_LICENSE_NUMBER>631227666</IFTA_LICENSE_NUMBER> <IFTA_BASE_COUNTRY>US</IFTA_BASE_COUNTRY> <IFTA_BASE_STATE>AL</IFTA_BASE_STATE> <IFTA_STATUS_CODE>0 </IFTA_STATUS_CODE> <IFTA_STATUS_DATE>2009-01-01</IFTA_STATUS_DATE> <IFTA_ISSUE_DATE>2009-01-01</IFTA_ISSUE_DATE> <IFTA_EXPIRE_DATE>2009-12-01</IFTA_EXPIRE_DATE> <IFTA_UPDATE_DATE>2008-12-30</IFTA_UPDATE_DATE> <NAME_TYPE>LG</NAME_TYPE> <NAME>K D L TRUCKING INC</NAME> <ADDRESS_TYPE>MA</ADDRESS_TYPE> <STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1> <CITY>OHATCHEE</CITY> <STATE>AL</STATE> <ZIP_CODE>36271</ZIP_CODE> <COUNTRY>US</COUNTRY> </IFTA_ACCOUNT> </T0019> I have taken first two records from generated XSLT. With the use of XSLT I have tried lot to group record on basis of IFTA_LICENSE_NUMBER,IFTA_BASE_COUNTRY,IFTA_BASE_ST ATE,NAME_TYPE,ADDRESS_TYPE but i failed to generated XML like this.. <?xml version="1.0" encoding="UTF-8" ?> <T0019> <IFTA_ACCOUNT> <IFTA_CARRIER_ID_NUMBER>705</IFTA_CARRIER_ID_NUMBER> <IFTA_BASE_COUNTRY>US</IFTA_BASE_COUNTRY> <IFTA_BASE_STATE>AL</IFTA_BASE_STATE> <IFTA_LICENSE_NUMBER>631227666</IFTA_LICENSE_NUMBER> <IFTA_STATUS_CODE>0</IFTA_STATUS_CODE> <IFTA_STATUS_DATE>2009-01-01</IFTA_STATUS_DATE> <IFTA_ISSUE_DATE>2009-01-01</IFTA_ISSUE_DATE> <IFTA_EXPIRE_DATE>2009-12-01</IFTA_EXPIRE_DATE> <IFTA_UPDATE_DATE>2008-12-30</IFTA_UPDATE_DATE> <IFTA_NAME> <NAME_TYPE>LG</NAME_TYPE> <NAME>K D L TRUCKING INC</NAME> <IFTA_ADDRESS> <ADDRESS_TYPE>PH</ADDRESS_TYPE> <STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1> <STREET_LINE_2 /> <CITY>OHATCHEE</CITY> <STATE>AL</STATE> <ZIP_CODE>36271</ZIP_CODE> <COUNTY>CALHOUN COUNTY</COUNTY> <COUNTRY>US</COUNTRY> </IFTA_ADDRESS> <IFTA_ADDRESS> <ADDRESS_TYPE>MA</ADDRESS_TYPE> <STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1> <STREET_LINE_2 /> <CITY>OHATCHEE</CITY> <STATE>AL</STATE> <ZIP_CODE>36271</ZIP_CODE> <COUNTY /> <COUNTRY>US</COUNTRY> </IFTA_ADDRESS> </IFTA_NAME> </IFTA_ACCOUNT> </T0019>

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  • TVirtualStringTree - resetting non-visual nodes and memory comsumption

    - by Remy Lebeau - TeamB
    I have an app that loads records from a binary log file and displays them in a virtual TListView. There are potentially millions of records in a file, and the display can be filtered by the user, so I do not load all of the records in memory at one time, and the ListView item indexes are not a 1-to-1 relation with the file record offsets (List item 1 may be file record 100, for instance). I use the ListView's OnDataHint event to load records for just the items the ListView is actually interested in. As the user scrolls around, the range specified by OnDataHint changes, allowing me to free records that are not in the new range, and allocate new records as needed. This works fine, speed is tolerable, and the memory footprint is very low. I am currently evaluating TVirtualStringTree as a replacement for the TListView, mainly because I want to add the ability to expand/collapse records that span multiple lines (I can fudge it with the TListView by incrementing/decrementing the item count dynamically, but this is not as straight forward as using a real tree). For the most part, I have been able to port the TListView logic and have everything work as I need. I notice that TVirtualStringTree's virtual paridigm is vastly different, though. It does not have the same kind of OnDataHint functionality that TListView does (I can use the OnScroll event to fake it, which allows my memory buffer logic to continue working), and I can use the OnInitializeNode event to associate nodes with records that are allocated. However, once a tree node is initialized, it sees that it remains initialized for the lifetime of the tree. That is not good for me. As the user scrolls around and I remove records from memory, I need to reset those non-visual nodes without removing them from the tree completely, or losing their expand/collapse states. When the user scrolls them back into view, I can re-allocate the records and re-initialize the nodes. Basically, I want to make TVirtualStringTree act as much like TListView as possible, as far as its virtualization is concerned. I have seen that TVirtualStringTree has a ResetNode() method, but I encounter various errors whenever I try to use it. I must be using it wrong. I also thought of just storing a data pointer inside each node to my record buffers, and I allocate and free memory, update those pointers accordingly. The end effect does not work so well, either. Worse, my largest test log file has ~5 million records in it. If I initialize the TVirtualStringTree with that many nodes at one time (when the log display is unfiltered), the tree's internal overhead for its nodes takes up a whopping 260MB of memory (without any records being allocated yet). Whereas with the TListView, loading the same log file and all the memory logic behind it, I can get away with using just a few MBs. Any ideas?

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  • Implement F3 Find Next using TFindDialog

    - by Pieter van Wyk
    Hi I've implemented a search using the TFindDialog on my form. Everything works well except that I cannot find a way to mimic the "F3 - Find Next" behaviour as in Notepad. Once you have entered a search string, pressing F3 finds the next instance without opening the search dialog. Regards, Pieter.

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  • Download, pause and resume an download using Indy components

    - by Salvador
    Actually i'm using the TIdHTTP component for download a file from internet. i'm wondering if is possible pause and resume the download using this component o maybe another indy component. this is my current code, this works ok for download a file (without resume), but . now i want pause the download close my app ,and when my app restart then resume the download from the last position saved. var Http: TIdHTTP; MS : TMemoryStream; begin Result:= True; Http := TIdHTTP.Create(nil); MS := TMemoryStream.Create; try try Http.OnWork:= HttpWork;//this event give me the actual progress of the download process Http.Head(Url); FSize := Http.Response.ContentLength; AddLog('Downloading File '+GetURLFilename(Url)+' - '+FormatFloat('#,',FSize)+' Bytes'); Http.Get(Url, MS); MS.SaveToFile(LocalFile); except on E : Exception do Begin Result:=False; AddLog(E.Message); end; end; finally Http.Free; MS.Free; end; end;

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  • How to make TWebBrower ignore accelerator chars of others controls?

    - by douglaslise
    I have a TWebBrowser placed on a form with the designMode enabled. Bellow the browser I have a close button with the Caption setted to 'Clos&e'. When I am editing the contents of a document inside the WebBrowser and I press the key E the button close is called. It appears that it is treating TWebBrowser like other controls that don't handle keys (e.g. TButton). How can I solve this? Thanks in advance.

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  • Avoid painting over nested controls

    - by Cobus Kruger
    I am writing a toolbar-style control and use the ThemeServices unit to paint the background required by the toolbar. Like so: ThemeServices.DrawElement(Canvas.Handle, ThemeServices.GetElementDetails(trRebarRoot), ARect); I then drop child controls onto the toolbar and voila - instant toolbar. Except that every now and again I notice that the nested (child) controls don't repaint as well. So my control paints its background and the child controls disappear until you move the mouse over them. Some of the edit controls show their client area (no border) and some of them are just gone altogether. This happens mostly when I place a window from another application over the toolbar and move it away. I keep thinking this has to be very easy to cure, that perhaps I'm somehow preventing the paint message from reaching the child controls, or missing an override but I have been unable to figure it out.

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  • There are another way to load MSHTML documents without use Application.ProcessMessages?

    - by douglaslise
    There are another way to load MSHTML documents without use Application.ProcessMessages? To load a document into a IHTMLDocument I need to do this: while Doc.readyState <> 'complete' do Application.ProcessMessages; I want not to process all the message queue during the loading, because I would be changing my application flow, in other words, some messages that should be processed after the loading to be completed can be processed earlier, even before the loading end. There is a special message code that the IHTMLDocument expect to advance in the loading process? Or there is another way to load? Thanks.

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  • TserverSocket and TClientSocket

    - by Georgi Gavrilski
    I use this code to reveive data : But It's not work.Can you Help me ? procedure TForm1.ServerSocket1ClientRead(Sender: TObject; Socket: TCustomWinSocket); var i:integer; sRec : string; begin for i := 0 to ServerSocket1.Socket.ActiveConnections-1 do begin with ServerSocket1.Socket.Connections[i] do begin sRec:=ReceiveText; if sRec < '' then begin if RemoteAddress='192.168.0.1' then begin if ReceiveText='1' then Btn1.Color:=clNavy; ADOQuery1.Active:=True; end; if RemoteAddress='192.168.0.1' then begin if ReceiveText='2' then Btn1.Color:=clRed; Pnl1.Visible:=True; end; end; end; end; end;

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  • String generation with regex criteria

    - by menjaraz
    I wonder wether it is feasible to implement an optimal string generator Class meeting the following requirements: Generation criteria using regex Lexicographical order enumeration. Count propetry Indexed access I don't feel comfortable with regular expression: I cannot come up with a starting piece of code but I just think of a naive implementation using a TList as a base class and use a filter (Regex) against "brute force" generated string. Thank you.

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  • how to close ie8 tabs

    - by omair iqbal
    this code below is not closing tab in internet explorer 8 if i post wm_close command to Wnd it closes internet explorer but i want to close the current tab not entire 'ieframe' is FindWindowEX(Wnd , 0, 'Frame Tab', nil) supposed to retun handle to ie frame? if yes why is it not closing the current tab in internet explorer thanks in advance var Wnd,WndChild : hwnd; begin Wnd := FindWindow('IEFrame', nil); WndChild := FindWindowEX(Wnd , 0, 'Frame Tab', nil); postmessage(WndChild,wm_close,0,0); end;

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  • How to make TWebBrowser ignore accelerator chars of others controls?

    - by douglaslise
    I have a TWebBrowser placed on a form with the designMode enabled. Bellow the browser I have a close button with the Caption set to 'Clos&e'. When I am editing the contents of a document inside the WebBrowser and I press the key E the button close is called. It appears that it is treating TWebBrowser like other controls that don't handle keys and/or don't accept chars (e.g. TButton). How can I solve this? Thanks in advance.

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  • How to get absolute path from path with system path variables?

    - by The_Fox
    Is there an easy way to translate a path with system path variables to an absolute path? So %ProgramFiles%\Internet Explorer\hmmapi.dll becomes C:\Program Files\Internet Explorer\hmmapi.dll I like to know if there is an API call that can do this, or do I have to do this the hard way and detect %..% sequences and replace them with the appropriate environment variable?

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