Interesting question! You can declare attributes on almost anything, the problem is retrieving them using RTTI. Here’s a quick console demo of declaring custom attributes for: Enums Function type Procedure type Method type (of object) Aliased type Record type Class type Record type that’s internal to a class Record field Record method Class instance field … Read more
some time ago I had to serialize record to XML format; for ex: TTest = record a : integer; b : real; end; to <Data> <a type=”tkInteger”>value</a> <b type=”tkFloat”>value</b> </Data> I used RTTI to recursively navigate through record fields and storing values to XML. I’ve tried few XML Parsers. I did’t need DOM model to … Read more
TMonitor combines the notion of a critical section (or a simple mutex) along with a condition variable. You can read about what a “monitor” is here: http://en.wikipedia.org/wiki/Monitor_%28synchronization%29 Any place you would use a critical section, you can use a monitor. Instead of declaring a TCriticalSection, you can simple create a TObject instance and then use … Read more
I’m not sure if there’s a “Delphi 2010” way, but there is a Windows way that doesn’t involve FindFirst and all that jazz. I threw together this Delphi conversion of that routine (and in the process modified it to handle > 4GB size files, should you need that). uses WinApi.Windows; function FileSize(const aFilename: String): Int64; … Read more
My list: The Dev.Express Quantum grid: enhanced grid component: once you get the hang of this component, you can use it in all sorts of scenarios (at least I have) Dev.Express Quantum Tree list: if you know the grid component, you can use this component as well (treelist and grid combined) Dev.Express Express bars: menu … Read more
The only real problem is conversion to Unicode. You should learn how Unicode support is implemented in Delphi – start from Marco Cantu White Paper: Delphi and Unicode It is impossible to estimate the amount of work required to upgrade old applications to Unicode without knowing the actual code. If you were using string types … Read more
Charles if do you read the code of TThread class , do you find the answer. TThread = class private type .. .. .. public constructor Create(CreateSuspended: Boolean); destructor Destroy; override; procedure AfterConstruction; override; // This function is not intended to be used for thread synchronization. procedure Resume; deprecated; // Use Start after creating a … Read more
RTTI in Delphi is still not quite as full-featured as Reflection in .NET or other managed languages, because it is operating on compiled code, not an Intermediate Language (bytecode). However, it is a very similar concept, and the new RTTI system in Delphi 2010 brings it a lot closer to reflection, exposing an entire object-oriented … Read more
There are three solutions to this that I am aware of: Try uninstalling the Windows security update KB2982791 which was already mentioned by Francisco Caffagni. This solved the issue for me (Windows 8.1 + Delphi 2007) but it might not be such a good idea to uninstall a Windows security update. Rename the file every … Read more
First up, a disclaimer: although I work for Embarcadero. I can’t speak for my employer. What I’m about to write is based on my own opinion of how a hypothetical 64-bit Delphi should work, but there may or may not be competing opinions and other foreseen or unforeseen incompatibilities and events that cause alternative design … Read more