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  • File combo box in delphi

    - by Bharat
    Hi, I want to have file combo box in delphi. It must behave like this: If i enter C:\ in combo box, it should show all the files & folders in C: Drive If i proceed further i.e., if i enter C:\Pro, then all the files & folders starting with C:\Pro should be shown in combo box. Simply it should behave like the File Name Combox Box that will come while using save dialog box

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  • Ord function implementation in Delphi

    - by Federico Zancan
    Purely as an exercise at home, aimed to better understand some language basics, I tried to reimplement the Ord function, but I came across a problem. In fact, the existing Ord function can accept arguments of a variety of different types (AnsiChar, Char, WideChar, Enumeration, Integer, Int64) and can return Integer or Int64. I can't figure out how to declare multiple versions of the same function. How should this be coded in Delphi?

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  • Firebird Insert Distinct Data Using ZeosLib and Delphi

    - by Brad
    I'm using Zeos 7, and Delphi 2K9 and want to check to see if a value is already in the database under a specific field before I post the data to the database. Example: Field Keyword Values of Cheese, Mouse, Trap tblkeywordKEYWORD.Value = Cheese What is wrong with the following? And is there a better way? zQueryKeyword.SQL.Add('IF NOT EXISTS(Select KEYWORD from KEYWORDLIST ='''+ tblkeywordKEYWORD.Value+''')INSERT into KEYWORDLIST(KEYWORD) VALUES ('''+ tblkeywordKEYWORD.Value+'''))'); zQueryKeyword.ExecSql; I tried using the unique constraint in IB Expert, but it gives the following error: Invalid insert or update value(s): object columns are constrained - no 2 table rows can have duplicate column values. attempt to store duplicate value (visible to active transactions) in unique index "UNQ1_KEYWORDLIST". Thanks for any help -Brad

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  • Hooking a Stacktrace in Delphi 2009

    - by Jim McKeeth
    The Exception class in Delphi 2009 received a number of new features. A number of them are related to getting a stacktrace: property StackTrace: string *read* GetStackTrace; property StackInfo: Pointer read FStackInfo; class var GetExceptionStackInfoProc: function (P: PExceptionRecord): Pointer; class var GetStackInfoStringProc: function (Info: Pointer): string; class var CleanUpStackInfoProc: procedure (Info: Pointer); Has anyone used these to obtain a stack trace yet? Yeah, I know there are other ways to get a stack trace, but if it is supported natively in the Exception class I would rather leverage that. Update: There is an interest blog post about this. Covers it in a lot of depth.

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  • Delphi-5 single-file storage solution?

    - by pastacool
    Hi! Is there a Delphi-5 solution to easily integrate single-file storage into existing code? I would like to have files like Java *.jar or Openoffice document files which are zipped/compressed files and folders but with their own file extension. Edit: I know some ZIP capable components but in a nutshell I want to access files within the "container" and use normal file handling routines on them (eg. TStringList.SaveToFile). Any overhead about compress/uncompress should be handled by the component.

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  • Delphi 7 : how to split a string into a TStringList

    - by mawg
    It's Delphi seven and I want the equivalent of strtok(). Specifically, I have a DFM as a string (pulled from a MySql database) and I want to split it into lines in a TStringList. It looks something like this ... 'Oject Form1: TScriptForm'#$D#$A' Left = 0'#$D#$A' Top = 0'#$D#$A' Align = alClient'#$D#$A' BorderStyle = bsNone'#$D#$A' ClientHeight = 517'#$D#$A' ClientWidth = 993'#$D#$A' Color = clBtnFace'#$D#$A' Font.Charset = DEFAULT_CHARSET'#$D#$A' Font.Color = clWindowText'#$D#$A' Font.Height = -11'#$D#$A' Font.Name = 'MS Sans Serif''#$D#$A' Font.Style = []'#$D#$A' OldCreateOrder = False'#$D#$A' SaveProps.Strings = ('#$D#$A' 'Visible=False')'#$D#$A' PixelsPerInch = 96'#$D#$A' TextHeight = 13'#$D#$A'

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  • Will Delphi be there in future ?

    - by devdude
    Yes, there is a version 2009. I know Delphi has a big community since years (10 plus)and I believe you could create native windows exe before Visual Basic got to speed (with all its dll's nighmare). But is it future-proof ? Is there a need or market for a non-crossplatform native all-in-one executable ? Will Embarcardero ex Codegear ex Borland continue to push it ? Why is it so expensive ? Who (non company) can afford it, in order to learn it ?

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  • Storing a set of values in Delphi

    - by Hendriksen123
    I am trying to store a set of values in delphi, but i want to be able to address them using their name, instead of an assigned number. For example, an array of 'OldValues' would let me do OldValue[1] := InflationEdit.Text; Ideally however, i would like to have a value stored in 'Data.Inflation.OldValue' for example. For each identifier, such as Inflation, there is an OldValue, NewValue and StoredValue. There are about 12 of these identifiers. Is there some way i could store the values like this? that way i could then do something like: Data.Inflation.NewValue := Data.Inflation.OldValue; Data.Inflation.NewValue := InflationEdit.Text;

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  • Multiple forms in delphi

    - by Hendriksen123
    In my Delphi Project i want to have a 'Settings' button that when clicked, opens a second form (i think this is the correct term, i essentially want a new window to open) for settings. When the user has finished changing the settings on this new form, i want the form to close on a button click. The settings the user types in will also need to be accessible to the first, 'main' form. So, for example, if my programme consisted of a main form, that calculated 'A' + 'B' (A and B being integer variables), with the settings form allowing the user to set values for A and B, how would i do this?

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  • Cross-reference between delphi records

    - by Paul-Jan
    Let's say I have a record TQuaternion and a record TVector. Quaternions have some methods with TVector parameters. On the other hand, TVector supports some operations that have TQuaternion parameters. Knowing that Delphi (Win32) does not allow for forward record declarations, how do I solve this elegantly? Using classes is not really an option here, because I really want to use operator overloading for this rare case where it actually makes good sense. For now I simply moved these particular methods out of the records and into separate functions, the good old-fashioned way. Better suggestions are most welcome.

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  • Delphi -> Delphi prism, how to use array of records?

    - by Pierre
    Hi there. I'm learning Delphi Prism, and i don't find how to write the following code with it : type TRapportItem = record Label : String; Value : Int16; AnomalieComment : String; end; type TRapportCategorie = record Label : String; CategoriesItems : Array of TRapportItem; end; type TRapportContent = record Categories : array of TRapportCategorie; end; Then, somewhere, i try to put items in the array : rapport.Categories[i].Label:=l.Item(i).InnerText; But it doesn't work.. Can someone enlight me? Thanks!

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  • Function From C to Delphi

    - by XBasic3000
    I created a function similar below in delphi code. but it wont work. What is the proper way to convert this? char* ReadSpeechFile(char* pFileName, int *nFileSize) { char *szBuf, *pLinearPCM; int nSize; FILE* fp; //read wave data fp = fopen(pFileName, "rb"); if(fp == NULL) return NULL; fseek(fp, 0, SEEK_END); nSize = ftell(fp); //linear szBuf = (char *)calloc(nSize, sizeof(char)); fseek(fp, 0, SEEK_SET); fread(szBuf, sizeof(char), nSize, fp); fclose(fp); *nFileSize = nSize; return szBuf; }

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  • Optimize included files and uses in Delphi

    - by Roland Bengtsson
    I try to increase performance of Delphi 2007 and Codeinsight. In the application there are 483 files added in the DPR file. I don't know if it is imagination but I feel that I got better performance from Codeinsight by simply readd all files in the DPR. I also think (correct me if I'm wrong) that all files that are included in a uses section also should be included in the DPR file for best performance. My question is, does it exists a tool that scan the whole project and give a list what files are missing in the DPR file and what files can be removed? Would also be nice to have a list of uses that can be removed in the PAS files. Regards

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  • Delphi - Sharing violation opening text file

    - by Simes
    I'm trying to open a text file for reading in a Delphi 7 app, but am getting I/O error 32 (sharing violation) because another application already has the file open. I've tried setting FileMode to "fmOpenRead or fmShareDenyNone" but now realise this doesn't apply to text files anyway. Is there a way of reading text files that are open by another application? var f: TextFile; begin FileMode := fmOpenRead or fmShareDenyNone; // FileMode IS NOT APPLICABLE TO TEXT FILES!! AssignFile(f, FileName); Reset(f);

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  • Delphi: OnTimer event of my own Timer never happens

    - by Mikhail
    I need a Timer in a 'no form' Delphi unit, so I do this: unit ... interface type TMyTimer = Class(TTimer) public procedure OnMyTimer(Sender: TObject); end; var MyTimer: TMyTimer; implementation procedure TMyTimer.OnMyTimer(Sender: TObject); begin ... end; initialization MyTimer := TMyTimer.Create(nil); with MyTimer do begin Interval := 1000; Enabled := True; OnTimer := OnMyTimer; end; finalization FreeAndNil(MouseTimer); The problem is that the OnMyTimer procedure is never run. I'll truly appreciate any ideas as to why :-)

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  • Tool that shows unit dependencies for Delphi 2010 or Delphi 7 program

    - by Tom1952
    We're trying to untangle a hairball of 100's of units, removing some. It would be helpful if there was tool that would show us what units were explicitly using unit X. Penganza doesn't seem to have a report that does that. (Although it has lots of other useful reports.) Can anyone suggest a tool or strategy for doing this, other than just hiding unit x and then hitting F9 ... repeatedly?

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  • Delphi label and asm weirdness?

    - by egon
    I written an asm function in Delphi 7 but it transforms my code to something else: function f(x: Cardinal): Cardinal; register; label err; asm not eax mov edx,eax shr edx, 1 and eax, edx bsf ecx, eax jz err mov eax, 1 shl eax, cl mov edx, eax add edx, edx or eax, edx ret err: xor eax, eax end; // compiled version f: push ebx // !!! not eax mov edx,eax shr edx, 1 and eax, edx bsf ecx, eax jz +$0e mov eax, 1 shl eax, cl mov edx, eax add edx, edx or eax, edx ret err: xor eax, eax mov eax, ebx // !!! pop ebx // !!! ret // the almost equivalent without asm function f(x: Cardinal): Cardinal; var c: Cardinal; begin x := not x; x := x and x shr 1; if x <> 0 then begin c := bsf(x); // bitscanforward x := 1 shl c; Result := x or (x shl 1) end else Result := 0; end; Why does it generate push ebx and pop ebx? And why does it do mov eax, ebx? It seems that it generates the partial stack frame because of the mov eax, ebx. This simple test generates mov eax, edx but doesn't generate that stack frame: function asmtest(x: Cardinal): Cardinal; register; label err; asm not eax and eax, 1 jz err ret err: xor eax, eax end; // compiled asmtest: not eax and eax, $01 jz +$01 ret xor eax, eax mov eax, edx // !!! ret It seems that it has something to do with the label err. If I remove that I don't get the mov eax, * part. Why does this happen? Made a bug report on Quality Central.

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  • Delphi Prism and LINQ to SQL / Entity Framework

    - by Vegar
    I have found many posts and examples of using LINQ-syntax in Delphi Prism (Oxygene), but I have never found anything on LINQ to SQL or Entity Framework. Is it possible to use LINQ to SQL or Entity Framework together with Prism? Where can I found such an example? Update: Olaf is giving an answer through his blog The question is now if any visual tools and code generation is provided, or if everything must be done by hand... Second update: Olaf has answered the tool/code generation-question in a comment on his site: The class designer is there, but there is no Pascal code gen. According to marc hoffman that is currently not on their list. For now you have to live with manual mapping. I guess, if you had Visual Studio (not just the VS shell), that you could add a C# library project to your solution, reference that from your Prism project. Then create the Table-Class mapping in the C# project using the visual designer. Maybe somewhat ugly, but possibly the key to get the Designer + CodeGen integrated into Prism. Who cares what language is used for the mapping . I will say this is a 1 - 0 to c# vs prism. If I did not care which language is used for the mapping - why should I care about which language is used for the rest?

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  • DBExpress connecting SQL 2008 at runtime with Delphi 2009

    - by Pascal
    Hi, I'm trying to connect at runtime with SQL Server 2008 with Delphi 2009 using DBExpress, it it's not working. When I set all the properties at design time, it works great, but at RunTime, I'm getting "unknown driver: mssql". Below is the code: scnConexao := TSQLConnection.Create(nil); scnConexao.DriverName := 'MSSQL'; scnConexao.ConnectionName := 'MSSQLConnection'; scnConexao.GetDriverFunc := 'getSQLDriverMSSQL'; scnConexao.LibraryName := 'dbxmss.dll'; scnConexao.VendorLib := 'oledb'; scnConexao.LoginPrompt := False; scnConexao.Params.Add('SchemaOverride=sa.dbo'); scnConexao.Params.Add('HostName=DESKTOP'); scnConexao.Params.Add('DataBase=DBNAME'); scnConexao.Params.Add('OS Authentication=False'); scnConexao.Params.Add('User_Name=UserName'); scnConexao.Params.Add('Password=Password'); scnConexao.Params.Add('MSSQL TransIsolation=ReadCommited'); scnConexao.Open; I have included the dbxmss.dll in the same directory as my app, but to no avail. Any help would be greatly appreciated. Tks

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  • Delphi Mock Wizard

    - by Todd
    Let me preface this by saying I'm fairly new to Unit Testing, Mocks, Stubs, Etc... I've installed Delphi-Mock-Wizard. When I select a unit and "Generate Mock", a new unit is created but it's very basic and not anything what I understand Mocks to be. unit Unit1; (** WARNING - AUTO-GENERATED MOCK! Change this unit if you want to, but be aware that any changes you make will be lost if you regenerate the mock object (for instance, if the interface changes). My advice is to create a descendent class of your auto-generated mock - in a different unit - and override things there. That way you get to keep them. Also, the auto-generate code is not yet smart enough to generate stubs for inherited interfaces. In that case, change your mock declaration to inherit from a mock implementation that implements the missing interface. This, unfortunately, is a violation of the directive above. I'm working on it. You may also need to manually change the unit name, above. Another thing I am working on. **) interface uses PascalMock, TestInterfaces; type IThingy = interface; implementation end. Looking at the source there seems to be quite a bit commented out. I'm wondering, has anyone gotten this to work? My IDE is D2010. Thanks.

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  • Copy SQL From Access To Delphi Script

    - by Libra
    I found a difficult with SQL on Delphi, I use ADOconnection and ADOQuery. Here these Query With ADOQuery Do Begin SQL.Text:='SELECT QUnionSAPiutang.kd_Customer, T_Customer.nama_customer, ' +'CDbl(IIf(IsNull(DSum("SA","QSumSAPiutang","kd_Customer='" & [QUnionSAPiutang].[kd_Customer] & "' AND ' +'Tgl<#1/1/2010# ")),0,DSum("SA","QSumSAPiutang","kd_Customer='" & [QUnionSAPiutang].[kd_Customer] & "' ' +'AND Tgl<#1/1/2010# "))) AS SA1, Sum(QUnionSAPiutang.D) AS Debit, Sum(QUnionSAPiutang.K) AS Kredit, ' +'[SA1]+[Debit]-[Kredit] AS SAkh ' +'FROM QUnionSAPiutang INNER JOIN T_Customer ON ' +'QUnionSAPiutang.kd_Customer = T_Customer.kd_customer ' +'WHERE (((QUnionSAPiutang.Tgl) Between #1/1/2010# And #1/31/2010#)) ' +'GROUP BY QUnionSAPiutang.kd_Customer, T_Customer.nama_customer'; End That Query Above has an error.... I try to fix, but still have an error. I hope you can help my problem, please fix that Query. I use Ms.Access XP for Database, if I run that Query on Accsess, the error is nothing. I use three object T_Customer, QUnionSAPiutang, and QSumSAPiutang. Where the red text is a part of QSumSAPiutang. coz QSumSAPiutang not directly Join with the others, it is call with DSum. Please help me, Thank you for your time. I hope reply from you soon....

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  • Is it possible to connect Flash applications to a server build with Delphi?

    - by Japie Bosman
    I have developed a client/server application using Firebird and developed with Delphi, having some clients that is also in Delphi, which I know how to do. But what I want to know is if it is possible to connect some Flash applications as clients to the Delphi developed server? The Flash applications must be able to access data in the database and also be able to update and insert records. Can something like this be done? Im using Delphi XE2 and the Flash is written with Actionscript 3

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