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• Problem with format a single excel column with OLE automation using Delphi

  - by Snackmoore

  Dear All, I have piece of code which I use to format a range of cells in Excel. It works fine in Excel 2007 but when the range is only 1 column wide and it is Excel 2003 instead of 2007, I'll get an error saying the I am assigning invalid value for a border's line style. ** valuables such as "xlInsideHorizontal", I have declared them as CONSTANT…

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• Delphi Unicode String Type Stored Directly at its Address

  - by Andreas Rejbrand

  I want a string type that is Unicode and that stores the string directly at the adress of the variable, as is the case of the (Ansi-only) ShortString type. I mean, if I declare a S: ShortString and let S := 'My String', then, at @S, I will find the length of the string (as one byte, so the string cannot contain more than 255 characters) followed…

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• Delphi / ADO : how to get result of Execute() ?

  - by mawg

  I have declared AdoConnection : TADOConnection; and successfully connected to the default "mysql" database (so, no need to pass that code). Now, taking baby steps to learn, I would like to AdoConnection.Execute('SHOW DATABASES', cmdText); which seems to work ok, in the sense that it doesn't throw an exception, but I am such a n00b that I don't…

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• Delphi hook to redirect to different ip

  - by Chris

  What is the best way to redirect ANY browser to a different ip for specific sites? For example if the user will type www.facebook.com in any browser he will be redirected to 127.0.0.1. Also the same should happen if he will type 66.220.146.11. What I have until now is this: using the winpkfilter I am able to intercept all the traffic on port 80,…

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• Making a Label Visible/Not Visible in Delphi

  - by Hendriksen123

  I would like a button to change a label between being visible and not visible when clicked. I Tried the following code, but it doesnt work: Var: Hidden : Boolean; Begin If Hidden = True Then Begin Label6.Visible := True; Hidden := False; End; If Hidden = False Then Begin Label6.Visible :=…

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• Delphi - Why is my global variable "inacessible" when i debug

  - by Antoine Lpy

  I'm building an application that contains around 30 Forms. I need to manage sessions, so I would like to have a global LoggedInUser variable accessible from all forms. I read "David Heffernan"'s post about global variables, and how to avoid them but I thought it would be easier to have a global User variable rather than 30 forms having their own…

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• Delphi interface cast using TValue

  - by conciliator

  I've recently experimented extensively with interfaces and D2010 RTTI. I don't know at runtime the actual type of the interface; although I will have access to it's qualified name using a string. Consider the following: program rtti_sb_1; {$APPTYPE CONSOLE} uses SysUtils, Rtti, TypInfo, mynamespace in 'mynamespace.pas'; var ctx: …

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• Delphi: Autoscale TEdit based on text length does not work when removing chars

  - by pr0wl

  Hello. I have an input edit field where the user can enter data. I want the box width to be at least 191px (min) and maximum 450px (max). procedure THauptform.edtEingabeChange(Sender: TObject); begin // Scale if Length(edtEingabe.Text) > 8 then begin if Hauptform.Width <= 450 then begin …

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• how to save extracted icon in delphi

  - by radick

  hi all I am trying to make icon extractor i am successful in getting icon to image1.picture.icon ,its looking same as orginal file icon, but when i am trying to save (iamge1.picture.icon.savetofile(c:\imahe.ico)) its not saving as it is ,it saving with less colur and looking ugly cany any one please tell me what i am doing…

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• Delphi - Populate an imagelist with icons at runtime 'destroys' transparency

  - by ben

  Hi again, I've spended hours for this (simple) one and don't find a solution :/ I'm using D7 and the TImageList. The ImageList is assigned to a toolbar. When I populate the ImageList at designtime, the icons (with partial transparency) are looking fine. But I need to populate it at runtime, and when I do this the icons are…

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• Delphi Application using COMMIT and ROLLBACK for Multiple SQL Updates

  - by Matt

  Is it possible to use the SQL BEGIN TRANSACTION, COMMIT TRANSACTION, ROLLBACK TRANSACTION when embedding SQL Queries into an application with mutiple calls to the SQL for Table Updates. For example I have the following code: Q.SQL.ADD(<UPDATE A RECORD>); Q.ExecSQL; Q.Close; Q.SQL.Clear; Q.SQL.ADD(<Select Some…

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• How to serialize fingerprinter Digital Persona in Delphi

  - by Juan Carlos

  Hi, I need to save a Template.Serialize in a Blob Field, How do it? var s : string; .... s := Templ.Serialize; --- size less that 1632 bytes Whay?

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• Embedding a font in delphi

  - by ChuckO

  I'm working on an app that requires a particular barcode true type font that is unlikely to be on the user's PC. Can I somehow embed the font in the app, or do I need to use the installer to install the font?

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• Delphi, PGDac vs Zeos, Fetch, Lookup?

  - by durumdara

  Hi! I used Zeos to test to know: is ZTable uses fetch technics, or not? May in the future we migrate our lesser system to PGSQL, and this used now "Table" components (as BDE, but it have an SQL-like server). These tables use real cursors, a "Window" with N record, so lookup is very fast, because the Locate/Lookup is…

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• Delphi Shell IExtractIcon usage and result

  - by Roy M Klever

  What I do: Try to extract thumbnail using IExtractImage if that fail I try to extract icons using IExtractIcon, to get maximum iconsize, but IExtractIcon gives strange results. Problem is I tried to use a methode that extracts icons from an imagelist but if there is no large icon (256x256) it will render the smaller…

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• Delphi Rad Studio - Can I stop components being recompiled each time I compile/build

  - by Paul Laughlin

  It might have something to do with library and other paths, but every time I build/compile software in DRS which uses a bought component like TMS controls the TMS controls keep getting recompiled, too. How do I stop that?

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• Delphi access violation assigning local variable

  - by Justin

  This seems like the simplest thing in the world and I'm ready to pull my hair out over it. I have a unit that looks like this ; Unit myUnit; // ... //normal declarations //... Public //bunch of procedures including Procedure myProcedure; const //bunch of constants var //bunch of vars including…

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• Delphi 7 inheritance

  - by Gene

  Have 6 forms, 1 Base and 5 inherited.The Base has the following snippet: procedure TMechan.Open1Click(Sender: TObject); begin if OpenDialog1.Execute then Form1.Memo1.Lines.LoadFromFile(OpenDialog1.FileName ); CopyCylMemoToRecord;ShowMechanicalValues; end; Since this snippet is in the Base…

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• Delphi - COM/OLE starting example needed

  - by durumdara

  Hi! 10 years have ellapsed since I used COM/OLE, and I forget 90% of them. Now we need to make a COM object to access some data from PHP/Python (this is specific thing, the php ODBC don't access the output params of a DataBase - like stored proc output), and my idea the I realize a minimal object…

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• using LocalAsyncVclCall in Delphi

  - by Salvador

  Actually i am using the AsyncCalls library to execute an Query asynchronously in this way. while AsyncMultiSync([RunQuery], True, 10) = WAIT_TIMEOUT do begin FrmProgress.refresh; //Update the ellapsed time in a popup form Application.ProcessMessages; …

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• Delphi Component Serialization

  - by Peter

  Has anyone run into issues serializing components into a file and reading them back, specifically in the area where the component vendor upgrades the VCL components. For example a file serialized with DelphiX and then years later read back with delphiY. Do the serialization formats change and…

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• Reading in a CSV file with multi-line records in Delphi

  - by Alister

  Normally I just use TStringList.CommaText, but this wont work when a given field has multiple lines. Basically I need a csv processor that conforms to rfc4180. I'd rather not have to implement the RFC myself.

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• Convert a Delphi example using TDatabase and local paradox table to server storage

  - by Brian Frost

  I am looking at the Developer Express Quantum Grid example 'IssueList' which is a useful bug reporting and tracking application that's almost ready to go out of the box. It uses a TDatabase component with several paradox (.db) tables. Is it simple to rejig the TDatabase settings to use a…

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• Delphi Unicode String Type Stored Directly at its Address (or "Unicode ShortString")

  - by Andreas Rejbrand

  I want a string type that is Unicode and that stores the string directly at the adress of the variable, as is the case of the (Ansi-only) ShortString type. I mean, if I declare a S: ShortString and let S := 'My String', then, at @S, I will find the length of the string (as one byte, so…

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• How To Get the Name of the Current Procedure/Function in Delphi (As a String)

  - by Andreas Rejbrand

  Is it possible to obtain the name of the current procedure/function as a string, within a procedure/function? I suppose there would be some "macro" that is expanded at compile-time. My scenario is this: I have a lot of procedures that are given a record and they all need to start by…

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