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Delphi

Reading and writing files from an iOS FireMonkey application

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October 4, 2011
Author: dragonhome Here’s an example of how you can read and write files in your iOS FireMonkey application. Enjoy! {$IFDEF FPC} var content : NSString; {$ENDIF} {$IFDEF FPC} function MyFileName : NSString; var paths : NSArray; fileName : NSString; begin paths := NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, True); fileName :=…
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Delphi

New "TOSVersion" type in Delphi XE2

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August 31, 2011
Author: Tóth Erik Delphi XE2 is probably the most significant release since Delphi 1. The number of new features is amazing and probably the biggest, most important one is FireMonkey – a brand new business application development platform that let you use Delphi…
News

Why Won't Visual Studio Step Into This Code?

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March 30, 2011
Author: Craig Stuntz I helped another developer debug an interesting problem this morning. Let’s see if you can spot the problem. The code in question looked something like this simplified version containing only enough code to show the problem: public void Execute() { DoStuff(); // breakpoint 1 } public IEnumerable<Coordinate> DoStuff() { …
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Delphi

Delphi JSON Viewer

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October 1, 2010
Author: Michael K22532 JSON support has been introduced in Delphi 2010 as a part of DBExpress database driver architecture, but of course JSON support is not limited to just database applications. JSON is similar to XML as both are text-based data interchange formats. Delphi…
News

Troubleshooting Entity Framework Connection Strings

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August 13, 2010
Author: Craig Stuntz In an application which uses the Entity Framework, you may see the following error at runtime: MetadataException: Unable to load the specified metadata resource The cause of this error is a missing or malformed Entity Framework connection string. In particular, the cause of this error is the metadata parameter of the connection string. Let’s examine this more…
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Delphi

Using Windows Stock Icons in Delphi

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May 31, 2010
Author: Pawe Gowacki it is not a big discovery that all applications are running in the environment provided by the underlying operating system. Delphi is well-known for its rapid application development capabilities. The latest version of Delphi – Delphi 2010 &#8211…
News

In LINQ, Don't Use Count() When You Mean Any()

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April 21, 2010
Author: Craig Stuntz If you have a list, array, or query in a C#/LINQ application and need to check and see if the list is empty, the correct way to do this is to use the Any() extension method: if (q.Any()) { Similarly, you can check to see if any elements in the list…
Delphi

Converting to grayscale with TBitmap.ScanLine property

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April 15, 2010
Author: Pawe Gowacki In my previous post “Boian’s TBitmap Visualizer and converting to grayscale” I have described an algorithm for converting arbitrary TBitmap instances to gray using a selected formula. The problem is with the performance of the code that actually changes the color of each pixel. Accessing color information is done via TBitmap.Pixels property, which is a…
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ModernizationNewsWhitepaper

WebStencils and HTMX: Free Guide to Fast Web Development

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October 21, 2024
We’re excited to announce the release of our comprehensive White Paper – WebStencils and HTMX: Fast Modern Web Development with RAD Studio. This guide is designed to help developers create…

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